./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix012_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix012_pso.opt_tso.opt.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:18:39,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:18:39,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:18:39,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:18:39,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:18:39,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:18:39,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:18:39,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:18:39,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:18:39,193 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:18:39,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:18:39,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:18:39,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:18:39,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:18:39,196 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:18:39,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:18:39,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:18:39,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:18:39,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:18:39,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:18:39,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:18:39,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:18:39,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:18:39,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:18:39,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:18:39,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:18:39,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:18:39,200 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:18:39,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:18:39,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:18:39,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:18:39,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:18:39,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:18:39,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:18:39,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:18:39,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:18:39,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:18:39,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:18:39,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:18:39,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:18:39,203 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:18:39,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:18:39,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:18:39,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:18:39,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:18:39,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:18:39,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:18:39,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:18:39,431 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:18:39,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-27 18:18:40,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:18:40,788 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:18:40,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-27 18:18:40,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2d44b3/ede0f25276ea4c66b361d1b7ed1cb453/FLAGebb7af9e3 [2024-06-27 18:18:40,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2d44b3/ede0f25276ea4c66b361d1b7ed1cb453 [2024-06-27 18:18:40,819 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:18:40,820 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:18:40,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-27 18:18:40,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:18:40,951 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:18:40,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:18:40,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:18:40,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:18:40,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:18:40" (1/2) ... [2024-06-27 18:18:40,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c90f705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:18:40, skipping insertion in model container [2024-06-27 18:18:40,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:18:40" (1/2) ... [2024-06-27 18:18:40,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@402f17a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:18:40, skipping insertion in model container [2024-06-27 18:18:40,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:18:40" (2/2) ... [2024-06-27 18:18:40,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c90f705 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:40, skipping insertion in model container [2024-06-27 18:18:40,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:18:40" (2/2) ... [2024-06-27 18:18:40,960 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:18:41,013 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:18:41,014 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:18:41,015 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:18:41,015 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:18:41,015 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-27 18:18:41,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:18:41,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i[999,1012] [2024-06-27 18:18:41,416 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:18:41,430 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:18:41,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:18:41,567 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:18:41,633 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:18:41,634 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41 WrapperNode [2024-06-27 18:18:41,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:18:41,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:18:41,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:18:41,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:18:41,657 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 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,670 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 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,730 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-06-27 18:18:41,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:18:41,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:18:41,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:18:41,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:18:41,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,773 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]. [2024-06-27 18:18:41,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:18:41,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:18:41,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:18:41,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:18:41,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (1/1) ... [2024-06-27 18:18:41,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:18:41,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:18:41,855 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) [2024-06-27 18:18:41,872 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 [2024-06-27 18:18:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:18:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:18:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:18:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:18:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:18:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:18:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:18:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:18:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:18:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:18:41,905 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:18:42,038 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:18:42,041 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:18:42,359 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:18:42,359 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:18:42,474 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:18:42,475 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:18:42,475 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:18:42 BoogieIcfgContainer [2024-06-27 18:18:42,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:18:42,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:18:42,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:18:42,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:18:42,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:18:40" (1/4) ... [2024-06-27 18:18:42,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e570a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:18:42, skipping insertion in model container [2024-06-27 18:18:42,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:18:40" (2/4) ... [2024-06-27 18:18:42,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e570a2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:18:42, skipping insertion in model container [2024-06-27 18:18:42,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:18:41" (3/4) ... [2024-06-27 18:18:42,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e570a2e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:18:42, skipping insertion in model container [2024-06-27 18:18:42,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:18:42" (4/4) ... [2024-06-27 18:18:42,482 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-27 18:18:42,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:18:42,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:18:42,496 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:18:42,540 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:18:42,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 18:18:42,580 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-27 18:18:42,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:18:42,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 18:18:42,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 18:18:42,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-27 18:18:42,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:18:42,597 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;@29af5f60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:18:42,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:18:42,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:18:42,601 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:18:42,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:18:42,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:42,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:18:42,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:42,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash 336206949, now seen corresponding path program 1 times [2024-06-27 18:18:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:42,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867231678] [2024-06-27 18:18:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:43,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:43,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867231678] [2024-06-27 18:18:43,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867231678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:43,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:43,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:18:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26838929] [2024-06-27 18:18:43,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:18:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:18:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:18:43,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 36 [2024-06-27 18:18:43,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:43,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:43,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 36 [2024-06-27 18:18:43,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:43,450 INFO L124 PetriNetUnfolderBase]: 384/690 cut-off events. [2024-06-27 18:18:43,451 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 18:18:43,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 690 events. 384/690 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3511 event pairs, 160 based on Foata normal form. 36/673 useless extension candidates. Maximal degree in co-relation 1343. Up to 639 conditions per place. [2024-06-27 18:18:43,466 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 29 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-27 18:18:43,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 163 flow [2024-06-27 18:18:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:18:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:18:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-27 18:18:43,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-27 18:18:43,479 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 76 transitions. [2024-06-27 18:18:43,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 163 flow [2024-06-27 18:18:43,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:43,484 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-27 18:18:43,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-27 18:18:43,488 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-27 18:18:43,489 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-27 18:18:43,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:43,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:43,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:43,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:18:43,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:43,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash 972347140, now seen corresponding path program 1 times [2024-06-27 18:18:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639472386] [2024-06-27 18:18:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639472386] [2024-06-27 18:18:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639472386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:43,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:18:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192596781] [2024-06-27 18:18:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:43,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:18:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:18:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:18:43,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 18:18:43,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:43,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:43,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 18:18:43,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:43,990 INFO L124 PetriNetUnfolderBase]: 434/747 cut-off events. [2024-06-27 18:18:43,991 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-27 18:18:43,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 747 events. 434/747 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3617 event pairs, 80 based on Foata normal form. 4/716 useless extension candidates. Maximal degree in co-relation 1663. Up to 686 conditions per place. [2024-06-27 18:18:44,019 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 39 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 18:18:44,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 238 flow [2024-06-27 18:18:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:18:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:18:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 18:18:44,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:18:44,023 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 4 states and 96 transitions. [2024-06-27 18:18:44,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 238 flow [2024-06-27 18:18:44,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:18:44,027 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2024-06-27 18:18:44,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:18:44,028 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-27 18:18:44,028 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2024-06-27 18:18:44,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:44,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:44,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:44,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:18:44,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:44,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash 77855476, now seen corresponding path program 1 times [2024-06-27 18:18:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:44,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605222622] [2024-06-27 18:18:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605222622] [2024-06-27 18:18:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605222622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:44,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:44,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:18:44,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210648801] [2024-06-27 18:18:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:44,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:18:44,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:44,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:18:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:18:44,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-06-27 18:18:44,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:44,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:44,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-06-27 18:18:44,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:44,190 INFO L124 PetriNetUnfolderBase]: 163/381 cut-off events. [2024-06-27 18:18:44,191 INFO L125 PetriNetUnfolderBase]: For 108/115 co-relation queries the response was YES. [2024-06-27 18:18:44,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 381 events. 163/381 cut-off events. For 108/115 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2014 event pairs, 38 based on Foata normal form. 7/372 useless extension candidates. Maximal degree in co-relation 775. Up to 240 conditions per place. [2024-06-27 18:18:44,193 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 20 selfloop transitions, 4 changer transitions 1/43 dead transitions. [2024-06-27 18:18:44,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 177 flow [2024-06-27 18:18:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:18:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:18:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 18:18:44,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-06-27 18:18:44,197 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 3 states and 78 transitions. [2024-06-27 18:18:44,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 177 flow [2024-06-27 18:18:44,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:44,200 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 112 flow [2024-06-27 18:18:44,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-27 18:18:44,201 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-06-27 18:18:44,201 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 112 flow [2024-06-27 18:18:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:44,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:44,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:44,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:18:44,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:44,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash -731217011, now seen corresponding path program 1 times [2024-06-27 18:18:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:44,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111849964] [2024-06-27 18:18:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:44,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:44,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111849964] [2024-06-27 18:18:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111849964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:44,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:18:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008807002] [2024-06-27 18:18:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:18:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:18:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:18:44,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 18:18:44,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:44,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:44,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 18:18:44,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:45,183 INFO L124 PetriNetUnfolderBase]: 375/673 cut-off events. [2024-06-27 18:18:45,183 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2024-06-27 18:18:45,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 673 events. 375/673 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3282 event pairs, 45 based on Foata normal form. 4/668 useless extension candidates. Maximal degree in co-relation 1552. Up to 554 conditions per place. [2024-06-27 18:18:45,186 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 44 selfloop transitions, 8 changer transitions 5/67 dead transitions. [2024-06-27 18:18:45,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 294 flow [2024-06-27 18:18:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:45,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:18:45,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-06-27 18:18:45,188 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 112 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:18:45,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 294 flow [2024-06-27 18:18:45,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:45,190 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 127 flow [2024-06-27 18:18:45,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=98, 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-27 18:18:45,191 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-06-27 18:18:45,191 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 127 flow [2024-06-27 18:18:45,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:45,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:45,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:18:45,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:45,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1804653252, now seen corresponding path program 1 times [2024-06-27 18:18:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:45,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737178018] [2024-06-27 18:18:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:45,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:45,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:45,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737178018] [2024-06-27 18:18:45,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737178018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:45,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:45,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:18:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709158350] [2024-06-27 18:18:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:45,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:18:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:18:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:18:45,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-27 18:18:45,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2024-06-27 18:18:45,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:45,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-27 18:18:45,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:45,812 INFO L124 PetriNetUnfolderBase]: 318/671 cut-off events. [2024-06-27 18:18:45,812 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-06-27 18:18:45,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 671 events. 318/671 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3508 event pairs, 107 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 1547. Up to 524 conditions per place. [2024-06-27 18:18:45,816 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 36 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-27 18:18:45,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 260 flow [2024-06-27 18:18:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:18:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:18:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-27 18:18:45,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:18:45,817 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 127 flow. Second operand 5 states and 93 transitions. [2024-06-27 18:18:45,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 260 flow [2024-06-27 18:18:45,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 240 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:45,820 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 163 flow [2024-06-27 18:18:45,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-06-27 18:18:45,820 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-27 18:18:45,820 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 163 flow [2024-06-27 18:18:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2024-06-27 18:18:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:45,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:18:45,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:45,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 109676963, now seen corresponding path program 1 times [2024-06-27 18:18:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310572935] [2024-06-27 18:18:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:46,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310572935] [2024-06-27 18:18:46,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310572935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:46,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:46,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:46,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438677832] [2024-06-27 18:18:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:46,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:46,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:46,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:46,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-27 18:18:46,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:46,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:46,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-27 18:18:46,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:46,727 INFO L124 PetriNetUnfolderBase]: 319/675 cut-off events. [2024-06-27 18:18:46,727 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2024-06-27 18:18:46,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 675 events. 319/675 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3530 event pairs, 105 based on Foata normal form. 1/650 useless extension candidates. Maximal degree in co-relation 1653. Up to 515 conditions per place. [2024-06-27 18:18:46,731 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 41 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-27 18:18:46,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 309 flow [2024-06-27 18:18:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 18:18:46,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:18:46,732 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 163 flow. Second operand 6 states and 111 transitions. [2024-06-27 18:18:46,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 309 flow [2024-06-27 18:18:46,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 300 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:46,735 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 189 flow [2024-06-27 18:18:46,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-27 18:18:46,735 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-27 18:18:46,735 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 189 flow [2024-06-27 18:18:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:46,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:46,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:46,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:18:46,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:46,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash -895226491, now seen corresponding path program 1 times [2024-06-27 18:18:46,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152417844] [2024-06-27 18:18:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152417844] [2024-06-27 18:18:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152417844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:47,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:47,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995443742] [2024-06-27 18:18:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:47,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:47,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:47,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:47,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:47,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:47,426 INFO L124 PetriNetUnfolderBase]: 400/810 cut-off events. [2024-06-27 18:18:47,427 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2024-06-27 18:18:47,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 810 events. 400/810 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4295 event pairs, 127 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 2112. Up to 631 conditions per place. [2024-06-27 18:18:47,432 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 48 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-27 18:18:47,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 371 flow [2024-06-27 18:18:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 18:18:47,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-27 18:18:47,433 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 189 flow. Second operand 6 states and 109 transitions. [2024-06-27 18:18:47,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 371 flow [2024-06-27 18:18:47,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 352 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:47,436 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 231 flow [2024-06-27 18:18:47,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-27 18:18:47,437 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-06-27 18:18:47,437 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 231 flow [2024-06-27 18:18:47,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:47,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:47,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:47,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:18:47,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:47,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash -894989341, now seen corresponding path program 2 times [2024-06-27 18:18:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:47,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2883793] [2024-06-27 18:18:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:47,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:47,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2883793] [2024-06-27 18:18:47,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2883793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:47,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:47,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649353845] [2024-06-27 18:18:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:47,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:47,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:47,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:47,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:47,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:47,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:48,155 INFO L124 PetriNetUnfolderBase]: 412/847 cut-off events. [2024-06-27 18:18:48,155 INFO L125 PetriNetUnfolderBase]: For 1292/1296 co-relation queries the response was YES. [2024-06-27 18:18:48,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 847 events. 412/847 cut-off events. For 1292/1296 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4578 event pairs, 123 based on Foata normal form. 6/816 useless extension candidates. Maximal degree in co-relation 2341. Up to 619 conditions per place. [2024-06-27 18:18:48,175 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 47 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-06-27 18:18:48,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 413 flow [2024-06-27 18:18:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 18:18:48,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:18:48,176 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 231 flow. Second operand 6 states and 110 transitions. [2024-06-27 18:18:48,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 413 flow [2024-06-27 18:18:48,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 394 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:48,179 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 259 flow [2024-06-27 18:18:48,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-27 18:18:48,179 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-06-27 18:18:48,180 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 259 flow [2024-06-27 18:18:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:48,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:48,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:48,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:18:48,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:48,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash 613766931, now seen corresponding path program 1 times [2024-06-27 18:18:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092899388] [2024-06-27 18:18:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:49,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092899388] [2024-06-27 18:18:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092899388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:49,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:49,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528799570] [2024-06-27 18:18:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:49,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:49,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:49,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:49,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:49,500 INFO L124 PetriNetUnfolderBase]: 441/896 cut-off events. [2024-06-27 18:18:49,500 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2024-06-27 18:18:49,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 896 events. 441/896 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4834 event pairs, 133 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 2661. Up to 693 conditions per place. [2024-06-27 18:18:49,506 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 57 selfloop transitions, 18 changer transitions 0/83 dead transitions. [2024-06-27 18:18:49,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 529 flow [2024-06-27 18:18:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:18:49,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:18:49,508 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 259 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:18:49,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 529 flow [2024-06-27 18:18:49,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 492 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:49,512 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 349 flow [2024-06-27 18:18:49,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=349, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-27 18:18:49,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2024-06-27 18:18:49,513 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 349 flow [2024-06-27 18:18:49,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:49,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:49,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:49,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:18:49,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:49,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1428109643, now seen corresponding path program 2 times [2024-06-27 18:18:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300072470] [2024-06-27 18:18:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:50,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:50,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300072470] [2024-06-27 18:18:50,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300072470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:50,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:50,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112163289] [2024-06-27 18:18:50,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:50,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:50,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:50,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:50,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:50,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:50,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:50,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:50,339 INFO L124 PetriNetUnfolderBase]: 470/945 cut-off events. [2024-06-27 18:18:50,340 INFO L125 PetriNetUnfolderBase]: For 2463/2463 co-relation queries the response was YES. [2024-06-27 18:18:50,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 945 events. 470/945 cut-off events. For 2463/2463 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5123 event pairs, 135 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 3058. Up to 715 conditions per place. [2024-06-27 18:18:50,345 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 55 selfloop transitions, 33 changer transitions 0/96 dead transitions. [2024-06-27 18:18:50,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 750 flow [2024-06-27 18:18:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:18:50,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-27 18:18:50,347 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 349 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:18:50,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 750 flow [2024-06-27 18:18:50,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 680 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:50,352 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 585 flow [2024-06-27 18:18:50,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2024-06-27 18:18:50,352 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-27 18:18:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 585 flow [2024-06-27 18:18:50,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:50,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:50,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:50,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:18:50,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:50,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1990410215, now seen corresponding path program 3 times [2024-06-27 18:18:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:50,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111864604] [2024-06-27 18:18:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:50,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111864604] [2024-06-27 18:18:50,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111864604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525979589] [2024-06-27 18:18:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:50,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:51,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:51,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 585 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:51,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:51,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:51,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:51,344 INFO L124 PetriNetUnfolderBase]: 493/994 cut-off events. [2024-06-27 18:18:51,345 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2024-06-27 18:18:51,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3481 conditions, 994 events. 493/994 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5464 event pairs, 140 based on Foata normal form. 1/958 useless extension candidates. Maximal degree in co-relation 3448. Up to 734 conditions per place. [2024-06-27 18:18:51,352 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 69 selfloop transitions, 45 changer transitions 0/122 dead transitions. [2024-06-27 18:18:51,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 122 transitions, 1046 flow [2024-06-27 18:18:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:18:51,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:18:51,354 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 585 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:18:51,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 122 transitions, 1046 flow [2024-06-27 18:18:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 122 transitions, 988 flow, removed 29 selfloop flow, removed 0 redundant places. [2024-06-27 18:18:51,363 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 830 flow [2024-06-27 18:18:51,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2024-06-27 18:18:51,364 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2024-06-27 18:18:51,364 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 830 flow [2024-06-27 18:18:51,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:51,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:51,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:51,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:18:51,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:51,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash -297592244, now seen corresponding path program 1 times [2024-06-27 18:18:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733477038] [2024-06-27 18:18:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733477038] [2024-06-27 18:18:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733477038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221780607] [2024-06-27 18:18:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:52,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:52,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 830 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:52,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:52,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:52,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:52,329 INFO L124 PetriNetUnfolderBase]: 515/999 cut-off events. [2024-06-27 18:18:52,330 INFO L125 PetriNetUnfolderBase]: For 4279/4279 co-relation queries the response was YES. [2024-06-27 18:18:52,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3804 conditions, 999 events. 515/999 cut-off events. For 4279/4279 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5495 event pairs, 120 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 3765. Up to 776 conditions per place. [2024-06-27 18:18:52,336 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 92 selfloop transitions, 21 changer transitions 0/121 dead transitions. [2024-06-27 18:18:52,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 1152 flow [2024-06-27 18:18:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:18:52,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-27 18:18:52,338 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 830 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:18:52,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 1152 flow [2024-06-27 18:18:52,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 1082 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:52,344 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 834 flow [2024-06-27 18:18:52,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=834, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-27 18:18:52,345 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2024-06-27 18:18:52,345 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 834 flow [2024-06-27 18:18:52,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:52,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:52,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:18:52,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:52,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1464468110, now seen corresponding path program 2 times [2024-06-27 18:18:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:52,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518971271] [2024-06-27 18:18:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518971271] [2024-06-27 18:18:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518971271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:53,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:53,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770660985] [2024-06-27 18:18:53,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:53,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:53,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:53,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 834 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:53,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:53,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:53,400 INFO L124 PetriNetUnfolderBase]: 542/1076 cut-off events. [2024-06-27 18:18:53,400 INFO L125 PetriNetUnfolderBase]: For 4866/4866 co-relation queries the response was YES. [2024-06-27 18:18:53,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 1076 events. 542/1076 cut-off events. For 4866/4866 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5929 event pairs, 114 based on Foata normal form. 1/1037 useless extension candidates. Maximal degree in co-relation 4106. Up to 741 conditions per place. [2024-06-27 18:18:53,407 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 92 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-27 18:18:53,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 1220 flow [2024-06-27 18:18:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:18:53,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:18:53,409 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 834 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:18:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 1220 flow [2024-06-27 18:18:53,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 128 transitions, 1168 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:53,417 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 903 flow [2024-06-27 18:18:53,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-06-27 18:18:53,418 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-06-27 18:18:53,418 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 903 flow [2024-06-27 18:18:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:53,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:53,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:53,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:18:53,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:53,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1464201200, now seen corresponding path program 3 times [2024-06-27 18:18:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:53,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514603146] [2024-06-27 18:18:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514603146] [2024-06-27 18:18:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514603146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846454847] [2024-06-27 18:18:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:54,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:54,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:54,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 903 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:54,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:54,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:54,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:54,510 INFO L124 PetriNetUnfolderBase]: 541/1080 cut-off events. [2024-06-27 18:18:54,511 INFO L125 PetriNetUnfolderBase]: For 5648/5648 co-relation queries the response was YES. [2024-06-27 18:18:54,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4433 conditions, 1080 events. 541/1080 cut-off events. For 5648/5648 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5984 event pairs, 117 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 4391. Up to 715 conditions per place. [2024-06-27 18:18:54,519 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 71 selfloop transitions, 52 changer transitions 0/131 dead transitions. [2024-06-27 18:18:54,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 1284 flow [2024-06-27 18:18:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:18:54,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:18:54,520 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 903 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:18:54,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 1284 flow [2024-06-27 18:18:54,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1240 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:54,535 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 1042 flow [2024-06-27 18:18:54,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1042, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2024-06-27 18:18:54,536 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-06-27 18:18:54,536 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 1042 flow [2024-06-27 18:18:54,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:54,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:54,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:54,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:18:54,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:54,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1974587966, now seen corresponding path program 1 times [2024-06-27 18:18:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318495685] [2024-06-27 18:18:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:55,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:55,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318495685] [2024-06-27 18:18:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318495685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:55,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426809994] [2024-06-27 18:18:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:55,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:55,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:55,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 1042 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:55,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:55,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:55,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:55,771 INFO L124 PetriNetUnfolderBase]: 542/1090 cut-off events. [2024-06-27 18:18:55,771 INFO L125 PetriNetUnfolderBase]: For 6588/6588 co-relation queries the response was YES. [2024-06-27 18:18:55,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 1090 events. 542/1090 cut-off events. For 6588/6588 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6101 event pairs, 125 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 4701. Up to 843 conditions per place. [2024-06-27 18:18:55,779 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 110 selfloop transitions, 13 changer transitions 0/131 dead transitions. [2024-06-27 18:18:55,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 1374 flow [2024-06-27 18:18:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 18:18:55,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-27 18:18:55,787 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 1042 flow. Second operand 7 states and 124 transitions. [2024-06-27 18:18:55,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 1374 flow [2024-06-27 18:18:55,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 131 transitions, 1290 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:55,811 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 1004 flow [2024-06-27 18:18:55,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-27 18:18:55,811 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-06-27 18:18:55,812 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 1004 flow [2024-06-27 18:18:55,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:55,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:55,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:18:55,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:55,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1212101428, now seen corresponding path program 1 times [2024-06-27 18:18:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035830005] [2024-06-27 18:18:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035830005] [2024-06-27 18:18:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035830005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:56,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800209988] [2024-06-27 18:18:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:56,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:56,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 1004 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:56,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:56,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:56,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:57,288 INFO L124 PetriNetUnfolderBase]: 553/1068 cut-off events. [2024-06-27 18:18:57,288 INFO L125 PetriNetUnfolderBase]: For 6774/6774 co-relation queries the response was YES. [2024-06-27 18:18:57,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 1068 events. 553/1068 cut-off events. For 6774/6774 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5941 event pairs, 126 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 4739. Up to 782 conditions per place. [2024-06-27 18:18:57,304 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 79 selfloop transitions, 51 changer transitions 0/138 dead transitions. [2024-06-27 18:18:57,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 1378 flow [2024-06-27 18:18:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:18:57,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:18:57,306 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 1004 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:18:57,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 1378 flow [2024-06-27 18:18:57,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 1338 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:57,319 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 1107 flow [2024-06-27 18:18:57,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-06-27 18:18:57,319 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2024-06-27 18:18:57,321 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 1107 flow [2024-06-27 18:18:57,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:57,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:57,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:57,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:18:57,322 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:57,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1215856086, now seen corresponding path program 1 times [2024-06-27 18:18:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810558147] [2024-06-27 18:18:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:57,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810558147] [2024-06-27 18:18:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810558147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:57,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642060188] [2024-06-27 18:18:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:57,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:57,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:57,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 1107 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:57,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:57,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:57,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:58,259 INFO L124 PetriNetUnfolderBase]: 597/1139 cut-off events. [2024-06-27 18:18:58,259 INFO L125 PetriNetUnfolderBase]: For 8797/8797 co-relation queries the response was YES. [2024-06-27 18:18:58,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5282 conditions, 1139 events. 597/1139 cut-off events. For 8797/8797 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6351 event pairs, 130 based on Foata normal form. 4/1111 useless extension candidates. Maximal degree in co-relation 5235. Up to 860 conditions per place. [2024-06-27 18:18:58,295 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 111 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-27 18:18:58,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 143 transitions, 1519 flow [2024-06-27 18:18:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:18:58,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:18:58,297 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 1107 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:18:58,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 143 transitions, 1519 flow [2024-06-27 18:18:58,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 1386 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:58,310 INFO L231 Difference]: Finished difference. Result has 101 places, 116 transitions, 1070 flow [2024-06-27 18:18:58,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1070, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2024-06-27 18:18:58,310 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-06-27 18:18:58,311 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 1070 flow [2024-06-27 18:18:58,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:58,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:58,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:58,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:18:58,311 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:58,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash -635424190, now seen corresponding path program 2 times [2024-06-27 18:18:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413051458] [2024-06-27 18:18:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:59,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:59,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413051458] [2024-06-27 18:18:59,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413051458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:59,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:59,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43891940] [2024-06-27 18:18:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:59,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:18:59,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 1070 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:59,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:59,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:18:59,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:59,654 INFO L124 PetriNetUnfolderBase]: 608/1166 cut-off events. [2024-06-27 18:18:59,655 INFO L125 PetriNetUnfolderBase]: For 9336/9336 co-relation queries the response was YES. [2024-06-27 18:18:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 1166 events. 608/1166 cut-off events. For 9336/9336 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6567 event pairs, 130 based on Foata normal form. 1/1134 useless extension candidates. Maximal degree in co-relation 5441. Up to 910 conditions per place. [2024-06-27 18:18:59,663 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 113 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-06-27 18:18:59,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 144 transitions, 1478 flow [2024-06-27 18:18:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:18:59,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:18:59,667 INFO L175 Difference]: Start difference. First operand has 101 places, 116 transitions, 1070 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:18:59,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 144 transitions, 1478 flow [2024-06-27 18:18:59,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 1404 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:59,683 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 1083 flow [2024-06-27 18:18:59,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1083, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2024-06-27 18:18:59,684 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 63 predicate places. [2024-06-27 18:18:59,684 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 1083 flow [2024-06-27 18:18:59,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:59,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:59,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:18:59,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:59,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 365492010, now seen corresponding path program 3 times [2024-06-27 18:18:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123661619] [2024-06-27 18:18:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:00,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123661619] [2024-06-27 18:19:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123661619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:00,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971757883] [2024-06-27 18:19:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:00,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:00,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:00,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 1083 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:00,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:00,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:00,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:00,884 INFO L124 PetriNetUnfolderBase]: 622/1237 cut-off events. [2024-06-27 18:19:00,884 INFO L125 PetriNetUnfolderBase]: For 10184/10184 co-relation queries the response was YES. [2024-06-27 18:19:00,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 1237 events. 622/1237 cut-off events. For 10184/10184 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7139 event pairs, 119 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 5572. Up to 834 conditions per place. [2024-06-27 18:19:00,893 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 108 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2024-06-27 18:19:00,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 149 transitions, 1581 flow [2024-06-27 18:19:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:19:00,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:19:00,895 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 1083 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:19:00,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 149 transitions, 1581 flow [2024-06-27 18:19:00,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 149 transitions, 1510 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:00,917 INFO L231 Difference]: Finished difference. Result has 105 places, 122 transitions, 1159 flow [2024-06-27 18:19:00,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=105, PETRI_TRANSITIONS=122} [2024-06-27 18:19:00,918 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-27 18:19:00,918 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 122 transitions, 1159 flow [2024-06-27 18:19:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:00,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:00,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:00,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:19:00,919 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:00,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1082991292, now seen corresponding path program 2 times [2024-06-27 18:19:00,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:00,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788140284] [2024-06-27 18:19:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:00,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:01,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788140284] [2024-06-27 18:19:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788140284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392018849] [2024-06-27 18:19:01,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:01,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 122 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:01,856 INFO L124 PetriNetUnfolderBase]: 640/1292 cut-off events. [2024-06-27 18:19:01,856 INFO L125 PetriNetUnfolderBase]: For 11166/11166 co-relation queries the response was YES. [2024-06-27 18:19:01,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5874 conditions, 1292 events. 640/1292 cut-off events. For 11166/11166 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7534 event pairs, 119 based on Foata normal form. 1/1242 useless extension candidates. Maximal degree in co-relation 5824. Up to 926 conditions per place. [2024-06-27 18:19:01,865 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 121 selfloop transitions, 38 changer transitions 0/167 dead transitions. [2024-06-27 18:19:01,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 167 transitions, 1818 flow [2024-06-27 18:19:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:19:01,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:19:01,867 INFO L175 Difference]: Start difference. First operand has 105 places, 122 transitions, 1159 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:19:01,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 167 transitions, 1818 flow [2024-06-27 18:19:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 167 transitions, 1749 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:19:01,886 INFO L231 Difference]: Finished difference. Result has 112 places, 144 transitions, 1403 flow [2024-06-27 18:19:01,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1403, PETRI_PLACES=112, PETRI_TRANSITIONS=144} [2024-06-27 18:19:01,886 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-27 18:19:01,886 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 144 transitions, 1403 flow [2024-06-27 18:19:01,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:01,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:01,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:01,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:19:01,887 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:01,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash 365261370, now seen corresponding path program 4 times [2024-06-27 18:19:01,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:01,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307062446] [2024-06-27 18:19:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:02,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307062446] [2024-06-27 18:19:02,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307062446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:02,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:02,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526752566] [2024-06-27 18:19:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:02,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:02,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:02,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 144 transitions, 1403 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:02,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:02,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:02,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:03,221 INFO L124 PetriNetUnfolderBase]: 638/1275 cut-off events. [2024-06-27 18:19:03,221 INFO L125 PetriNetUnfolderBase]: For 11075/11075 co-relation queries the response was YES. [2024-06-27 18:19:03,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6072 conditions, 1275 events. 638/1275 cut-off events. For 11075/11075 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7357 event pairs, 118 based on Foata normal form. 1/1228 useless extension candidates. Maximal degree in co-relation 6017. Up to 925 conditions per place. [2024-06-27 18:19:03,230 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 137 selfloop transitions, 29 changer transitions 0/174 dead transitions. [2024-06-27 18:19:03,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 174 transitions, 1904 flow [2024-06-27 18:19:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:19:03,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:19:03,232 INFO L175 Difference]: Start difference. First operand has 112 places, 144 transitions, 1403 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:19:03,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 174 transitions, 1904 flow [2024-06-27 18:19:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 174 transitions, 1808 flow, removed 48 selfloop flow, removed 0 redundant places. [2024-06-27 18:19:03,253 INFO L231 Difference]: Finished difference. Result has 120 places, 144 transitions, 1393 flow [2024-06-27 18:19:03,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1393, PETRI_PLACES=120, PETRI_TRANSITIONS=144} [2024-06-27 18:19:03,254 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2024-06-27 18:19:03,254 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 144 transitions, 1393 flow [2024-06-27 18:19:03,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:03,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:03,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:03,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:19:03,256 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:03,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1082982922, now seen corresponding path program 3 times [2024-06-27 18:19:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441798988] [2024-06-27 18:19:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441798988] [2024-06-27 18:19:04,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441798988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:04,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:04,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:04,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992944283] [2024-06-27 18:19:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:04,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:04,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:04,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:04,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 144 transitions, 1393 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:04,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:04,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:04,667 INFO L124 PetriNetUnfolderBase]: 650/1313 cut-off events. [2024-06-27 18:19:04,667 INFO L125 PetriNetUnfolderBase]: For 11346/11346 co-relation queries the response was YES. [2024-06-27 18:19:04,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 1313 events. 650/1313 cut-off events. For 11346/11346 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7718 event pairs, 123 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 6095. Up to 982 conditions per place. [2024-06-27 18:19:04,676 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 147 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-27 18:19:04,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 174 transitions, 1855 flow [2024-06-27 18:19:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:19:04,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:19:04,677 INFO L175 Difference]: Start difference. First operand has 120 places, 144 transitions, 1393 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:19:04,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 174 transitions, 1855 flow [2024-06-27 18:19:04,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 174 transitions, 1742 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:04,698 INFO L231 Difference]: Finished difference. Result has 120 places, 146 transitions, 1350 flow [2024-06-27 18:19:04,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1350, PETRI_PLACES=120, PETRI_TRANSITIONS=146} [2024-06-27 18:19:04,698 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2024-06-27 18:19:04,698 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 146 transitions, 1350 flow [2024-06-27 18:19:04,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:04,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:04,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:04,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:19:04,700 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:04,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:04,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1091265502, now seen corresponding path program 4 times [2024-06-27 18:19:04,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:04,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089688942] [2024-06-27 18:19:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:04,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089688942] [2024-06-27 18:19:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089688942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:05,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:05,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697594275] [2024-06-27 18:19:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:05,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:05,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 1350 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:05,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:05,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:05,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:05,787 INFO L124 PetriNetUnfolderBase]: 662/1321 cut-off events. [2024-06-27 18:19:05,788 INFO L125 PetriNetUnfolderBase]: For 11855/11855 co-relation queries the response was YES. [2024-06-27 18:19:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 1321 events. 662/1321 cut-off events. For 11855/11855 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7720 event pairs, 117 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 6095. Up to 952 conditions per place. [2024-06-27 18:19:05,796 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 141 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2024-06-27 18:19:05,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 181 transitions, 1909 flow [2024-06-27 18:19:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:19:05,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:19:05,798 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 1350 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:19:05,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 181 transitions, 1909 flow [2024-06-27 18:19:05,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 181 transitions, 1859 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:05,816 INFO L231 Difference]: Finished difference. Result has 122 places, 150 transitions, 1437 flow [2024-06-27 18:19:05,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1437, PETRI_PLACES=122, PETRI_TRANSITIONS=150} [2024-06-27 18:19:05,817 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2024-06-27 18:19:05,817 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 150 transitions, 1437 flow [2024-06-27 18:19:05,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:05,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:05,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:19:05,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:05,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1082683710, now seen corresponding path program 1 times [2024-06-27 18:19:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823795473] [2024-06-27 18:19:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823795473] [2024-06-27 18:19:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823795473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570801220] [2024-06-27 18:19:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:06,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:06,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:06,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 150 transitions, 1437 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:06,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:06,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:06,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:07,072 INFO L124 PetriNetUnfolderBase]: 663/1332 cut-off events. [2024-06-27 18:19:07,072 INFO L125 PetriNetUnfolderBase]: For 12533/12533 co-relation queries the response was YES. [2024-06-27 18:19:07,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6288 conditions, 1332 events. 663/1332 cut-off events. For 12533/12533 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7825 event pairs, 126 based on Foata normal form. 2/1281 useless extension candidates. Maximal degree in co-relation 6228. Up to 1010 conditions per place. [2024-06-27 18:19:07,082 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 153 selfloop transitions, 17 changer transitions 0/178 dead transitions. [2024-06-27 18:19:07,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 178 transitions, 1888 flow [2024-06-27 18:19:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:19:07,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:19:07,084 INFO L175 Difference]: Start difference. First operand has 122 places, 150 transitions, 1437 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:19:07,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 178 transitions, 1888 flow [2024-06-27 18:19:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 178 transitions, 1782 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:07,107 INFO L231 Difference]: Finished difference. Result has 124 places, 151 transitions, 1381 flow [2024-06-27 18:19:07,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1381, PETRI_PLACES=124, PETRI_TRANSITIONS=151} [2024-06-27 18:19:07,107 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2024-06-27 18:19:07,107 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 151 transitions, 1381 flow [2024-06-27 18:19:07,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:07,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:07,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:07,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:19:07,108 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:07,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1082391658, now seen corresponding path program 1 times [2024-06-27 18:19:07,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:07,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142074483] [2024-06-27 18:19:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:07,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:07,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142074483] [2024-06-27 18:19:07,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142074483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:07,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:07,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:07,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653658877] [2024-06-27 18:19:07,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:07,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:07,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:07,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:07,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 1381 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:07,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:07,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:07,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:08,190 INFO L124 PetriNetUnfolderBase]: 685/1399 cut-off events. [2024-06-27 18:19:08,190 INFO L125 PetriNetUnfolderBase]: For 12762/12762 co-relation queries the response was YES. [2024-06-27 18:19:08,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6405 conditions, 1399 events. 685/1399 cut-off events. For 12762/12762 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8462 event pairs, 130 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 6344. Up to 1022 conditions per place. [2024-06-27 18:19:08,201 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 126 selfloop transitions, 44 changer transitions 0/178 dead transitions. [2024-06-27 18:19:08,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 178 transitions, 1854 flow [2024-06-27 18:19:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:19:08,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 18:19:08,203 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 1381 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:19:08,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 178 transitions, 1854 flow [2024-06-27 18:19:08,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 1814 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:08,223 INFO L231 Difference]: Finished difference. Result has 128 places, 156 transitions, 1523 flow [2024-06-27 18:19:08,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1523, PETRI_PLACES=128, PETRI_TRANSITIONS=156} [2024-06-27 18:19:08,223 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-06-27 18:19:08,223 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 156 transitions, 1523 flow [2024-06-27 18:19:08,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:08,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:08,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:08,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:19:08,224 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:08,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:08,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1082453038, now seen corresponding path program 2 times [2024-06-27 18:19:08,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:08,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698692025] [2024-06-27 18:19:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698692025] [2024-06-27 18:19:08,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698692025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:08,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:08,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:08,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995638239] [2024-06-27 18:19:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:08,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:08,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 156 transitions, 1523 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:08,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:08,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:08,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:09,299 INFO L124 PetriNetUnfolderBase]: 701/1427 cut-off events. [2024-06-27 18:19:09,299 INFO L125 PetriNetUnfolderBase]: For 13987/13987 co-relation queries the response was YES. [2024-06-27 18:19:09,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 1427 events. 701/1427 cut-off events. For 13987/13987 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8673 event pairs, 84 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 6612. Up to 1025 conditions per place. [2024-06-27 18:19:09,309 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 138 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2024-06-27 18:19:09,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 184 transitions, 1991 flow [2024-06-27 18:19:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:19:09,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:19:09,311 INFO L175 Difference]: Start difference. First operand has 128 places, 156 transitions, 1523 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:19:09,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 184 transitions, 1991 flow [2024-06-27 18:19:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 184 transitions, 1900 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:09,334 INFO L231 Difference]: Finished difference. Result has 131 places, 159 transitions, 1559 flow [2024-06-27 18:19:09,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1559, PETRI_PLACES=131, PETRI_TRANSITIONS=159} [2024-06-27 18:19:09,335 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2024-06-27 18:19:09,335 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 159 transitions, 1559 flow [2024-06-27 18:19:09,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:09,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:09,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:09,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:19:09,335 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:09,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash -963381418, now seen corresponding path program 3 times [2024-06-27 18:19:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:09,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901483315] [2024-06-27 18:19:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:09,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:09,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901483315] [2024-06-27 18:19:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901483315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:09,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708154176] [2024-06-27 18:19:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:10,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:10,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 159 transitions, 1559 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:10,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:10,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:10,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:10,414 INFO L124 PetriNetUnfolderBase]: 717/1449 cut-off events. [2024-06-27 18:19:10,414 INFO L125 PetriNetUnfolderBase]: For 15629/15629 co-relation queries the response was YES. [2024-06-27 18:19:10,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 1449 events. 717/1449 cut-off events. For 15629/15629 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8813 event pairs, 126 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 6812. Up to 1102 conditions per place. [2024-06-27 18:19:10,423 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 158 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-06-27 18:19:10,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 189 transitions, 2073 flow [2024-06-27 18:19:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:19:10,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:19:10,425 INFO L175 Difference]: Start difference. First operand has 131 places, 159 transitions, 1559 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:19:10,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 189 transitions, 2073 flow [2024-06-27 18:19:10,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 189 transitions, 1984 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:10,450 INFO L231 Difference]: Finished difference. Result has 135 places, 163 transitions, 1586 flow [2024-06-27 18:19:10,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1586, PETRI_PLACES=135, PETRI_TRANSITIONS=163} [2024-06-27 18:19:10,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-27 18:19:10,451 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 163 transitions, 1586 flow [2024-06-27 18:19:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:10,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:10,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:19:10,452 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:10,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1660300910, now seen corresponding path program 1 times [2024-06-27 18:19:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469458900] [2024-06-27 18:19:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:11,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469458900] [2024-06-27 18:19:11,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469458900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:11,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:11,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97365966] [2024-06-27 18:19:11,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:11,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:11,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:11,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 163 transitions, 1586 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:11,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:11,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:11,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:11,746 INFO L124 PetriNetUnfolderBase]: 739/1492 cut-off events. [2024-06-27 18:19:11,746 INFO L125 PetriNetUnfolderBase]: For 17137/17137 co-relation queries the response was YES. [2024-06-27 18:19:11,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7164 conditions, 1492 events. 739/1492 cut-off events. For 17137/17137 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9137 event pairs, 122 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 7097. Up to 1054 conditions per place. [2024-06-27 18:19:11,756 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 131 selfloop transitions, 57 changer transitions 0/196 dead transitions. [2024-06-27 18:19:11,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 196 transitions, 2128 flow [2024-06-27 18:19:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:19:11,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:19:11,758 INFO L175 Difference]: Start difference. First operand has 135 places, 163 transitions, 1586 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:19:11,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 196 transitions, 2128 flow [2024-06-27 18:19:11,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 196 transitions, 2054 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:11,786 INFO L231 Difference]: Finished difference. Result has 139 places, 165 transitions, 1673 flow [2024-06-27 18:19:11,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1673, PETRI_PLACES=139, PETRI_TRANSITIONS=165} [2024-06-27 18:19:11,791 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2024-06-27 18:19:11,791 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 165 transitions, 1673 flow [2024-06-27 18:19:11,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:11,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:11,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:11,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:19:11,792 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:11,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -963166216, now seen corresponding path program 2 times [2024-06-27 18:19:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742663347] [2024-06-27 18:19:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:11,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742663347] [2024-06-27 18:19:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742663347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:12,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228843824] [2024-06-27 18:19:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:12,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:12,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 165 transitions, 1673 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:12,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:12,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:12,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:13,130 INFO L124 PetriNetUnfolderBase]: 787/1571 cut-off events. [2024-06-27 18:19:13,130 INFO L125 PetriNetUnfolderBase]: For 21402/21402 co-relation queries the response was YES. [2024-06-27 18:19:13,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7965 conditions, 1571 events. 787/1571 cut-off events. For 21402/21402 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9625 event pairs, 128 based on Foata normal form. 2/1514 useless extension candidates. Maximal degree in co-relation 7897. Up to 1102 conditions per place. [2024-06-27 18:19:13,142 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 164 selfloop transitions, 33 changer transitions 0/205 dead transitions. [2024-06-27 18:19:13,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 205 transitions, 2366 flow [2024-06-27 18:19:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:19:13,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:19:13,144 INFO L175 Difference]: Start difference. First operand has 139 places, 165 transitions, 1673 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:19:13,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 205 transitions, 2366 flow [2024-06-27 18:19:13,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 205 transitions, 2223 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:13,177 INFO L231 Difference]: Finished difference. Result has 141 places, 170 transitions, 1701 flow [2024-06-27 18:19:13,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1701, PETRI_PLACES=141, PETRI_TRANSITIONS=170} [2024-06-27 18:19:13,178 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2024-06-27 18:19:13,178 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 170 transitions, 1701 flow [2024-06-27 18:19:13,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:13,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:13,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:13,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:19:13,179 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:13,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1776687620, now seen corresponding path program 3 times [2024-06-27 18:19:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:13,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56757433] [2024-06-27 18:19:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:14,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:14,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56757433] [2024-06-27 18:19:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56757433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:14,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:14,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841920033] [2024-06-27 18:19:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:14,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:14,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 170 transitions, 1701 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:14,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:14,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:14,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:15,025 INFO L124 PetriNetUnfolderBase]: 785/1573 cut-off events. [2024-06-27 18:19:15,025 INFO L125 PetriNetUnfolderBase]: For 20687/20687 co-relation queries the response was YES. [2024-06-27 18:19:15,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7896 conditions, 1573 events. 785/1573 cut-off events. For 20687/20687 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9695 event pairs, 124 based on Foata normal form. 1/1513 useless extension candidates. Maximal degree in co-relation 7827. Up to 1101 conditions per place. [2024-06-27 18:19:15,036 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 162 selfloop transitions, 36 changer transitions 0/206 dead transitions. [2024-06-27 18:19:15,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 206 transitions, 2347 flow [2024-06-27 18:19:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:19:15,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-27 18:19:15,037 INFO L175 Difference]: Start difference. First operand has 141 places, 170 transitions, 1701 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:19:15,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 206 transitions, 2347 flow [2024-06-27 18:19:15,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 206 transitions, 2260 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:15,074 INFO L231 Difference]: Finished difference. Result has 145 places, 172 transitions, 1737 flow [2024-06-27 18:19:15,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1737, PETRI_PLACES=145, PETRI_TRANSITIONS=172} [2024-06-27 18:19:15,074 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 105 predicate places. [2024-06-27 18:19:15,074 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 172 transitions, 1737 flow [2024-06-27 18:19:15,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:15,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:15,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:15,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:19:15,075 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:15,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1652102378, now seen corresponding path program 4 times [2024-06-27 18:19:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:15,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602032913] [2024-06-27 18:19:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:15,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:15,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:15,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602032913] [2024-06-27 18:19:15,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602032913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:15,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063411608] [2024-06-27 18:19:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:15,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:15,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 172 transitions, 1737 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:15,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:15,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:16,174 INFO L124 PetriNetUnfolderBase]: 801/1606 cut-off events. [2024-06-27 18:19:16,174 INFO L125 PetriNetUnfolderBase]: For 20575/20575 co-relation queries the response was YES. [2024-06-27 18:19:16,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8049 conditions, 1606 events. 801/1606 cut-off events. For 20575/20575 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9960 event pairs, 133 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 7978. Up to 1204 conditions per place. [2024-06-27 18:19:16,186 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 165 selfloop transitions, 28 changer transitions 0/201 dead transitions. [2024-06-27 18:19:16,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 201 transitions, 2281 flow [2024-06-27 18:19:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:19:16,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:19:16,189 INFO L175 Difference]: Start difference. First operand has 145 places, 172 transitions, 1737 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:19:16,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 201 transitions, 2281 flow [2024-06-27 18:19:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 201 transitions, 2196 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:16,227 INFO L231 Difference]: Finished difference. Result has 148 places, 175 transitions, 1772 flow [2024-06-27 18:19:16,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1772, PETRI_PLACES=148, PETRI_TRANSITIONS=175} [2024-06-27 18:19:16,228 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 108 predicate places. [2024-06-27 18:19:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 175 transitions, 1772 flow [2024-06-27 18:19:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:16,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:16,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:19:16,229 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:16,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1395394106, now seen corresponding path program 4 times [2024-06-27 18:19:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:16,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703580324] [2024-06-27 18:19:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:16,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703580324] [2024-06-27 18:19:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703580324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:17,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10868272] [2024-06-27 18:19:17,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:17,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:17,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:17,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 175 transitions, 1772 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:17,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:17,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:17,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:17,825 INFO L124 PetriNetUnfolderBase]: 876/1741 cut-off events. [2024-06-27 18:19:17,825 INFO L125 PetriNetUnfolderBase]: For 27056/27056 co-relation queries the response was YES. [2024-06-27 18:19:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9236 conditions, 1741 events. 876/1741 cut-off events. For 27056/27056 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10977 event pairs, 131 based on Foata normal form. 1/1677 useless extension candidates. Maximal degree in co-relation 9163. Up to 931 conditions per place. [2024-06-27 18:19:17,837 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 153 selfloop transitions, 60 changer transitions 0/221 dead transitions. [2024-06-27 18:19:17,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 221 transitions, 2784 flow [2024-06-27 18:19:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:19:17,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-06-27 18:19:17,838 INFO L175 Difference]: Start difference. First operand has 148 places, 175 transitions, 1772 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:19:17,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 221 transitions, 2784 flow [2024-06-27 18:19:17,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 221 transitions, 2694 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:17,879 INFO L231 Difference]: Finished difference. Result has 154 places, 185 transitions, 2062 flow [2024-06-27 18:19:17,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2062, PETRI_PLACES=154, PETRI_TRANSITIONS=185} [2024-06-27 18:19:17,880 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 114 predicate places. [2024-06-27 18:19:17,880 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 185 transitions, 2062 flow [2024-06-27 18:19:17,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:17,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:17,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:17,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:19:17,881 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:17,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:17,881 INFO L85 PathProgramCache]: Analyzing trace with hash 787009098, now seen corresponding path program 5 times [2024-06-27 18:19:17,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:17,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257091688] [2024-06-27 18:19:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:17,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:18,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:18,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257091688] [2024-06-27 18:19:18,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257091688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:18,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:18,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:18,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239426000] [2024-06-27 18:19:18,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:18,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:18,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:18,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:18,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:18,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 185 transitions, 2062 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:18,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:18,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:18,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:19,166 INFO L124 PetriNetUnfolderBase]: 912/1813 cut-off events. [2024-06-27 18:19:19,166 INFO L125 PetriNetUnfolderBase]: For 33362/33362 co-relation queries the response was YES. [2024-06-27 18:19:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 1813 events. 912/1813 cut-off events. For 33362/33362 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11591 event pairs, 133 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 10234. Up to 965 conditions per place. [2024-06-27 18:19:19,180 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 158 selfloop transitions, 61 changer transitions 0/227 dead transitions. [2024-06-27 18:19:19,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 227 transitions, 3020 flow [2024-06-27 18:19:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:19:19,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339506172839507 [2024-06-27 18:19:19,186 INFO L175 Difference]: Start difference. First operand has 154 places, 185 transitions, 2062 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:19:19,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 227 transitions, 3020 flow [2024-06-27 18:19:19,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 227 transitions, 2905 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:19,242 INFO L231 Difference]: Finished difference. Result has 160 places, 190 transitions, 2198 flow [2024-06-27 18:19:19,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2198, PETRI_PLACES=160, PETRI_TRANSITIONS=190} [2024-06-27 18:19:19,243 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-27 18:19:19,243 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 190 transitions, 2198 flow [2024-06-27 18:19:19,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:19,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:19,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:19,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:19:19,244 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:19,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash 787009377, now seen corresponding path program 1 times [2024-06-27 18:19:19,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:19,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941554442] [2024-06-27 18:19:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:19,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941554442] [2024-06-27 18:19:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941554442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445541293] [2024-06-27 18:19:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:19,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:19,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:19,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 190 transitions, 2198 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:19,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:19,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:19,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:20,402 INFO L124 PetriNetUnfolderBase]: 922/1841 cut-off events. [2024-06-27 18:19:20,402 INFO L125 PetriNetUnfolderBase]: For 32842/32842 co-relation queries the response was YES. [2024-06-27 18:19:20,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10506 conditions, 1841 events. 922/1841 cut-off events. For 32842/32842 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11831 event pairs, 136 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 10428. Up to 1186 conditions per place. [2024-06-27 18:19:20,416 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 159 selfloop transitions, 56 changer transitions 0/223 dead transitions. [2024-06-27 18:19:20,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 223 transitions, 2945 flow [2024-06-27 18:19:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:19:20,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-06-27 18:19:20,417 INFO L175 Difference]: Start difference. First operand has 160 places, 190 transitions, 2198 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:19:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 223 transitions, 2945 flow [2024-06-27 18:19:20,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 223 transitions, 2802 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:20,476 INFO L231 Difference]: Finished difference. Result has 164 places, 194 transitions, 2303 flow [2024-06-27 18:19:20,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2303, PETRI_PLACES=164, PETRI_TRANSITIONS=194} [2024-06-27 18:19:20,476 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 124 predicate places. [2024-06-27 18:19:20,476 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 194 transitions, 2303 flow [2024-06-27 18:19:20,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:20,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:20,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:20,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:19:20,477 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:20,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:20,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1554381638, now seen corresponding path program 6 times [2024-06-27 18:19:20,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:20,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257914692] [2024-06-27 18:19:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:20,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:21,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:21,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257914692] [2024-06-27 18:19:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257914692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037744332] [2024-06-27 18:19:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:21,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:21,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:21,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:21,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:21,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 194 transitions, 2303 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:21,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:21,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:21,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:22,001 INFO L124 PetriNetUnfolderBase]: 918/1860 cut-off events. [2024-06-27 18:19:22,001 INFO L125 PetriNetUnfolderBase]: For 31887/31887 co-relation queries the response was YES. [2024-06-27 18:19:22,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10358 conditions, 1860 events. 918/1860 cut-off events. For 31887/31887 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12129 event pairs, 161 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 10278. Up to 1379 conditions per place. [2024-06-27 18:19:22,016 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 196 selfloop transitions, 24 changer transitions 0/228 dead transitions. [2024-06-27 18:19:22,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 228 transitions, 2959 flow [2024-06-27 18:19:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:19:22,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:19:22,018 INFO L175 Difference]: Start difference. First operand has 164 places, 194 transitions, 2303 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:19:22,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 228 transitions, 2959 flow [2024-06-27 18:19:22,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 228 transitions, 2810 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:22,080 INFO L231 Difference]: Finished difference. Result has 167 places, 194 transitions, 2211 flow [2024-06-27 18:19:22,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2211, PETRI_PLACES=167, PETRI_TRANSITIONS=194} [2024-06-27 18:19:22,080 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 127 predicate places. [2024-06-27 18:19:22,081 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 194 transitions, 2211 flow [2024-06-27 18:19:22,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:22,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:22,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:22,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:19:22,081 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:22,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash 530508588, now seen corresponding path program 7 times [2024-06-27 18:19:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225177259] [2024-06-27 18:19:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:22,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225177259] [2024-06-27 18:19:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225177259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992983485] [2024-06-27 18:19:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:22,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:22,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:22,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 194 transitions, 2211 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:22,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:22,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:22,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:23,402 INFO L124 PetriNetUnfolderBase]: 941/1880 cut-off events. [2024-06-27 18:19:23,403 INFO L125 PetriNetUnfolderBase]: For 31902/31902 co-relation queries the response was YES. [2024-06-27 18:19:23,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10379 conditions, 1880 events. 941/1880 cut-off events. For 31902/31902 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12181 event pairs, 138 based on Foata normal form. 2/1812 useless extension candidates. Maximal degree in co-relation 10299. Up to 1311 conditions per place. [2024-06-27 18:19:23,421 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 184 selfloop transitions, 40 changer transitions 0/232 dead transitions. [2024-06-27 18:19:23,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 232 transitions, 2962 flow [2024-06-27 18:19:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:19:23,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-27 18:19:23,422 INFO L175 Difference]: Start difference. First operand has 167 places, 194 transitions, 2211 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:19:23,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 232 transitions, 2962 flow [2024-06-27 18:19:23,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 232 transitions, 2894 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:23,491 INFO L231 Difference]: Finished difference. Result has 168 places, 197 transitions, 2301 flow [2024-06-27 18:19:23,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2301, PETRI_PLACES=168, PETRI_TRANSITIONS=197} [2024-06-27 18:19:23,491 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 128 predicate places. [2024-06-27 18:19:23,491 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 197 transitions, 2301 flow [2024-06-27 18:19:23,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:23,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:23,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:23,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:19:23,492 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:23,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1970040103, now seen corresponding path program 2 times [2024-06-27 18:19:23,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:23,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087911459] [2024-06-27 18:19:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:23,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:24,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087911459] [2024-06-27 18:19:24,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087911459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:24,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:24,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:24,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499313517] [2024-06-27 18:19:24,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:24,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:24,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:24,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:24,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 197 transitions, 2301 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:24,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:24,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:24,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:24,910 INFO L124 PetriNetUnfolderBase]: 936/1877 cut-off events. [2024-06-27 18:19:24,910 INFO L125 PetriNetUnfolderBase]: For 32159/32159 co-relation queries the response was YES. [2024-06-27 18:19:24,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10368 conditions, 1877 events. 936/1877 cut-off events. For 32159/32159 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12183 event pairs, 142 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 10287. Up to 1370 conditions per place. [2024-06-27 18:19:24,924 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 185 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2024-06-27 18:19:24,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 230 transitions, 2896 flow [2024-06-27 18:19:24,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:19:24,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-27 18:19:24,926 INFO L175 Difference]: Start difference. First operand has 168 places, 197 transitions, 2301 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:19:24,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 230 transitions, 2896 flow [2024-06-27 18:19:24,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 230 transitions, 2681 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:24,988 INFO L231 Difference]: Finished difference. Result has 169 places, 197 transitions, 2167 flow [2024-06-27 18:19:24,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2167, PETRI_PLACES=169, PETRI_TRANSITIONS=197} [2024-06-27 18:19:24,989 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 129 predicate places. [2024-06-27 18:19:24,989 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 197 transitions, 2167 flow [2024-06-27 18:19:24,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:24,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:24,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:24,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:19:24,990 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:24,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash 530501148, now seen corresponding path program 8 times [2024-06-27 18:19:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663603938] [2024-06-27 18:19:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:24,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663603938] [2024-06-27 18:19:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663603938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:25,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:25,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282420054] [2024-06-27 18:19:25,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:25,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:25,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:25,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 197 transitions, 2167 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:25,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:25,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:25,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:26,513 INFO L124 PetriNetUnfolderBase]: 934/1873 cut-off events. [2024-06-27 18:19:26,513 INFO L125 PetriNetUnfolderBase]: For 27144/27144 co-relation queries the response was YES. [2024-06-27 18:19:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 1873 events. 934/1873 cut-off events. For 27144/27144 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12145 event pairs, 142 based on Foata normal form. 1/1802 useless extension candidates. Maximal degree in co-relation 9694. Up to 1305 conditions per place. [2024-06-27 18:19:26,527 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 181 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-06-27 18:19:26,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 232 transitions, 2881 flow [2024-06-27 18:19:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:19:26,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-27 18:19:26,529 INFO L175 Difference]: Start difference. First operand has 169 places, 197 transitions, 2167 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:19:26,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 232 transitions, 2881 flow [2024-06-27 18:19:26,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 232 transitions, 2766 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:26,591 INFO L231 Difference]: Finished difference. Result has 170 places, 199 transitions, 2193 flow [2024-06-27 18:19:26,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2193, PETRI_PLACES=170, PETRI_TRANSITIONS=199} [2024-06-27 18:19:26,591 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 130 predicate places. [2024-06-27 18:19:26,591 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 199 transitions, 2193 flow [2024-06-27 18:19:26,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:26,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:26,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:26,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:19:26,592 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:26,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:26,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1416701846, now seen corresponding path program 5 times [2024-06-27 18:19:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:26,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723945925] [2024-06-27 18:19:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:26,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723945925] [2024-06-27 18:19:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723945925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:27,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:27,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587583566] [2024-06-27 18:19:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:27,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:27,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:27,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 199 transitions, 2193 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:27,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:27,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:27,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:27,630 INFO L124 PetriNetUnfolderBase]: 960/1957 cut-off events. [2024-06-27 18:19:27,631 INFO L125 PetriNetUnfolderBase]: For 29200/29200 co-relation queries the response was YES. [2024-06-27 18:19:27,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10100 conditions, 1957 events. 960/1957 cut-off events. For 29200/29200 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12984 event pairs, 167 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 10018. Up to 1464 conditions per place. [2024-06-27 18:19:27,646 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 185 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2024-06-27 18:19:27,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 230 transitions, 2773 flow [2024-06-27 18:19:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:19:27,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 18:19:27,648 INFO L175 Difference]: Start difference. First operand has 170 places, 199 transitions, 2193 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:19:27,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 230 transitions, 2773 flow [2024-06-27 18:19:27,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 230 transitions, 2666 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:27,715 INFO L231 Difference]: Finished difference. Result has 173 places, 201 transitions, 2200 flow [2024-06-27 18:19:27,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2200, PETRI_PLACES=173, PETRI_TRANSITIONS=201} [2024-06-27 18:19:27,718 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 133 predicate places. [2024-06-27 18:19:27,718 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 201 transitions, 2200 flow [2024-06-27 18:19:27,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:27,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:27,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:27,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:19:27,719 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:27,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash -300929912, now seen corresponding path program 6 times [2024-06-27 18:19:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:27,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714995182] [2024-06-27 18:19:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:27,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:28,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:28,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714995182] [2024-06-27 18:19:28,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714995182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:28,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:28,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260408994] [2024-06-27 18:19:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:28,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:28,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 201 transitions, 2200 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:28,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:28,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:28,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:28,864 INFO L124 PetriNetUnfolderBase]: 981/2014 cut-off events. [2024-06-27 18:19:28,865 INFO L125 PetriNetUnfolderBase]: For 29033/29033 co-relation queries the response was YES. [2024-06-27 18:19:28,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10188 conditions, 2014 events. 981/2014 cut-off events. For 29033/29033 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13581 event pairs, 161 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 10105. Up to 1468 conditions per place. [2024-06-27 18:19:28,878 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 177 selfloop transitions, 50 changer transitions 0/235 dead transitions. [2024-06-27 18:19:28,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 235 transitions, 2826 flow [2024-06-27 18:19:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:19:28,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 18:19:28,880 INFO L175 Difference]: Start difference. First operand has 173 places, 201 transitions, 2200 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:19:28,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 235 transitions, 2826 flow [2024-06-27 18:19:28,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 235 transitions, 2717 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:28,943 INFO L231 Difference]: Finished difference. Result has 176 places, 204 transitions, 2265 flow [2024-06-27 18:19:28,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2265, PETRI_PLACES=176, PETRI_TRANSITIONS=204} [2024-06-27 18:19:28,944 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2024-06-27 18:19:28,944 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 204 transitions, 2265 flow [2024-06-27 18:19:28,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:28,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:28,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:19:28,945 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:28,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash -487603620, now seen corresponding path program 1 times [2024-06-27 18:19:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:28,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683699268] [2024-06-27 18:19:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:28,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683699268] [2024-06-27 18:19:28,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683699268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:28,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:28,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:19:28,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065965638] [2024-06-27 18:19:28,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:28,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:19:28,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:19:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:19:28,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-27 18:19:28,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 204 transitions, 2265 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2024-06-27 18:19:28,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:28,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-27 18:19:28,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:29,175 INFO L124 PetriNetUnfolderBase]: 604/1290 cut-off events. [2024-06-27 18:19:29,175 INFO L125 PetriNetUnfolderBase]: For 20592/20601 co-relation queries the response was YES. [2024-06-27 18:19:29,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 1290 events. 604/1290 cut-off events. For 20592/20601 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7880 event pairs, 116 based on Foata normal form. 90/1331 useless extension candidates. Maximal degree in co-relation 6546. Up to 399 conditions per place. [2024-06-27 18:19:29,184 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 102 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-06-27 18:19:29,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 2335 flow [2024-06-27 18:19:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:19:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:19:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-27 18:19:29,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-27 18:19:29,185 INFO L175 Difference]: Start difference. First operand has 176 places, 204 transitions, 2265 flow. Second operand 4 states and 99 transitions. [2024-06-27 18:19:29,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 2335 flow [2024-06-27 18:19:29,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 182 transitions, 2059 flow, removed 42 selfloop flow, removed 21 redundant places. [2024-06-27 18:19:29,237 INFO L231 Difference]: Finished difference. Result has 158 places, 162 transitions, 1779 flow [2024-06-27 18:19:29,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1779, PETRI_PLACES=158, PETRI_TRANSITIONS=162} [2024-06-27 18:19:29,238 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 118 predicate places. [2024-06-27 18:19:29,238 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 162 transitions, 1779 flow [2024-06-27 18:19:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2024-06-27 18:19:29,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:29,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:29,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:19:29,238 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:29,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:29,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1333225761, now seen corresponding path program 1 times [2024-06-27 18:19:29,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:29,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017324520] [2024-06-27 18:19:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:29,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:30,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017324520] [2024-06-27 18:19:30,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017324520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:30,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:30,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716322550] [2024-06-27 18:19:30,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:30,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:30,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:30,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 162 transitions, 1779 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:30,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:30,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:30,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:30,588 INFO L124 PetriNetUnfolderBase]: 677/1358 cut-off events. [2024-06-27 18:19:30,588 INFO L125 PetriNetUnfolderBase]: For 22777/22777 co-relation queries the response was YES. [2024-06-27 18:19:30,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7048 conditions, 1358 events. 677/1358 cut-off events. For 22777/22777 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7789 event pairs, 78 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 6988. Up to 1001 conditions per place. [2024-06-27 18:19:30,598 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 153 selfloop transitions, 29 changer transitions 0/191 dead transitions. [2024-06-27 18:19:30,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 191 transitions, 2259 flow [2024-06-27 18:19:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:19:30,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 18:19:30,599 INFO L175 Difference]: Start difference. First operand has 158 places, 162 transitions, 1779 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:19:30,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 191 transitions, 2259 flow [2024-06-27 18:19:30,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 191 transitions, 2206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:19:30,653 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1800 flow [2024-06-27 18:19:30,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1800, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-06-27 18:19:30,653 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2024-06-27 18:19:30,654 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1800 flow [2024-06-27 18:19:30,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:30,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:30,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:19:30,655 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:30,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash 893183509, now seen corresponding path program 2 times [2024-06-27 18:19:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264981050] [2024-06-27 18:19:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:31,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:31,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264981050] [2024-06-27 18:19:31,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264981050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:31,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:31,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:31,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410834534] [2024-06-27 18:19:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:31,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:31,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:31,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:31,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:31,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1800 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:31,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:31,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:31,889 INFO L124 PetriNetUnfolderBase]: 694/1401 cut-off events. [2024-06-27 18:19:31,889 INFO L125 PetriNetUnfolderBase]: For 23233/23233 co-relation queries the response was YES. [2024-06-27 18:19:31,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 1401 events. 694/1401 cut-off events. For 23233/23233 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8111 event pairs, 120 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 7283. Up to 924 conditions per place. [2024-06-27 18:19:31,899 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 137 selfloop transitions, 44 changer transitions 0/190 dead transitions. [2024-06-27 18:19:31,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 190 transitions, 2272 flow [2024-06-27 18:19:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:19:31,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-27 18:19:31,900 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1800 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:19:31,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 190 transitions, 2272 flow [2024-06-27 18:19:31,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 190 transitions, 2208 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:31,954 INFO L231 Difference]: Finished difference. Result has 167 places, 164 transitions, 1847 flow [2024-06-27 18:19:31,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1847, PETRI_PLACES=167, PETRI_TRANSITIONS=164} [2024-06-27 18:19:31,955 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 127 predicate places. [2024-06-27 18:19:31,955 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 164 transitions, 1847 flow [2024-06-27 18:19:31,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:31,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:31,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:31,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:19:31,955 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:31,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 893361139, now seen corresponding path program 3 times [2024-06-27 18:19:31,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801412279] [2024-06-27 18:19:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801412279] [2024-06-27 18:19:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801412279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:32,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056866701] [2024-06-27 18:19:32,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:32,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:32,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 164 transitions, 1847 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:32,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:32,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:32,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:33,277 INFO L124 PetriNetUnfolderBase]: 711/1444 cut-off events. [2024-06-27 18:19:33,277 INFO L125 PetriNetUnfolderBase]: For 25467/25467 co-relation queries the response was YES. [2024-06-27 18:19:33,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7601 conditions, 1444 events. 711/1444 cut-off events. For 25467/25467 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8480 event pairs, 144 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 7539. Up to 1111 conditions per place. [2024-06-27 18:19:33,286 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 138 selfloop transitions, 40 changer transitions 0/187 dead transitions. [2024-06-27 18:19:33,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 2299 flow [2024-06-27 18:19:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:19:33,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-27 18:19:33,288 INFO L175 Difference]: Start difference. First operand has 167 places, 164 transitions, 1847 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:19:33,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 2299 flow [2024-06-27 18:19:33,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 187 transitions, 2208 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:33,341 INFO L231 Difference]: Finished difference. Result has 169 places, 165 transitions, 1856 flow [2024-06-27 18:19:33,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1856, PETRI_PLACES=169, PETRI_TRANSITIONS=165} [2024-06-27 18:19:33,341 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 129 predicate places. [2024-06-27 18:19:33,341 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 165 transitions, 1856 flow [2024-06-27 18:19:33,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:33,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:33,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:33,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:19:33,342 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:33,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:33,342 INFO L85 PathProgramCache]: Analyzing trace with hash -763520621, now seen corresponding path program 4 times [2024-06-27 18:19:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:33,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181189507] [2024-06-27 18:19:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:34,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181189507] [2024-06-27 18:19:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181189507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283644202] [2024-06-27 18:19:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:34,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:34,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:34,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:34,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 165 transitions, 1856 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:34,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:34,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:34,786 INFO L124 PetriNetUnfolderBase]: 728/1479 cut-off events. [2024-06-27 18:19:34,786 INFO L125 PetriNetUnfolderBase]: For 25382/25382 co-relation queries the response was YES. [2024-06-27 18:19:34,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7760 conditions, 1479 events. 728/1479 cut-off events. For 25382/25382 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8766 event pairs, 159 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 7697. Up to 1137 conditions per place. [2024-06-27 18:19:34,799 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 138 selfloop transitions, 40 changer transitions 0/187 dead transitions. [2024-06-27 18:19:34,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 187 transitions, 2313 flow [2024-06-27 18:19:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:19:34,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:19:34,802 INFO L175 Difference]: Start difference. First operand has 169 places, 165 transitions, 1856 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:19:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 187 transitions, 2313 flow [2024-06-27 18:19:34,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 187 transitions, 2223 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:34,879 INFO L231 Difference]: Finished difference. Result has 172 places, 167 transitions, 1882 flow [2024-06-27 18:19:34,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1882, PETRI_PLACES=172, PETRI_TRANSITIONS=167} [2024-06-27 18:19:34,881 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-27 18:19:34,881 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 167 transitions, 1882 flow [2024-06-27 18:19:34,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:34,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:34,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:34,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:19:34,881 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:34,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -763698251, now seen corresponding path program 5 times [2024-06-27 18:19:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:34,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301519868] [2024-06-27 18:19:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:35,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301519868] [2024-06-27 18:19:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301519868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994130444] [2024-06-27 18:19:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:35,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:35,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 167 transitions, 1882 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:35,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:35,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:35,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:36,482 INFO L124 PetriNetUnfolderBase]: 745/1513 cut-off events. [2024-06-27 18:19:36,483 INFO L125 PetriNetUnfolderBase]: For 26844/26844 co-relation queries the response was YES. [2024-06-27 18:19:36,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 1513 events. 745/1513 cut-off events. For 26844/26844 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9044 event pairs, 157 based on Foata normal form. 2/1403 useless extension candidates. Maximal degree in co-relation 7868. Up to 1182 conditions per place. [2024-06-27 18:19:36,495 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 165 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2024-06-27 18:19:36,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 192 transitions, 2358 flow [2024-06-27 18:19:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:19:36,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-27 18:19:36,496 INFO L175 Difference]: Start difference. First operand has 172 places, 167 transitions, 1882 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:19:36,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 192 transitions, 2358 flow [2024-06-27 18:19:36,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 192 transitions, 2269 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:36,568 INFO L231 Difference]: Finished difference. Result has 175 places, 168 transitions, 1853 flow [2024-06-27 18:19:36,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1853, PETRI_PLACES=175, PETRI_TRANSITIONS=168} [2024-06-27 18:19:36,569 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 135 predicate places. [2024-06-27 18:19:36,569 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 168 transitions, 1853 flow [2024-06-27 18:19:36,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:36,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:36,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:19:36,570 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash -757264511, now seen corresponding path program 6 times [2024-06-27 18:19:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325839936] [2024-06-27 18:19:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325839936] [2024-06-27 18:19:37,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325839936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:37,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:37,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:37,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084213982] [2024-06-27 18:19:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:37,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:37,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:37,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 168 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:37,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:37,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:37,876 INFO L124 PetriNetUnfolderBase]: 762/1561 cut-off events. [2024-06-27 18:19:37,876 INFO L125 PetriNetUnfolderBase]: For 27920/27920 co-relation queries the response was YES. [2024-06-27 18:19:37,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8062 conditions, 1561 events. 762/1561 cut-off events. For 27920/27920 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9454 event pairs, 173 based on Foata normal form. 2/1446 useless extension candidates. Maximal degree in co-relation 7996. Up to 1229 conditions per place. [2024-06-27 18:19:37,886 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 158 selfloop transitions, 22 changer transitions 0/189 dead transitions. [2024-06-27 18:19:37,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 189 transitions, 2309 flow [2024-06-27 18:19:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:19:37,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:19:37,887 INFO L175 Difference]: Start difference. First operand has 175 places, 168 transitions, 1853 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:19:37,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 189 transitions, 2309 flow [2024-06-27 18:19:37,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 189 transitions, 2259 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:37,959 INFO L231 Difference]: Finished difference. Result has 177 places, 169 transitions, 1873 flow [2024-06-27 18:19:37,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1873, PETRI_PLACES=177, PETRI_TRANSITIONS=169} [2024-06-27 18:19:37,960 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 137 predicate places. [2024-06-27 18:19:37,960 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 169 transitions, 1873 flow [2024-06-27 18:19:37,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:37,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:37,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:37,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:19:37,962 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:37,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash -757018247, now seen corresponding path program 1 times [2024-06-27 18:19:37,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:37,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204577376] [2024-06-27 18:19:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:37,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:38,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:38,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204577376] [2024-06-27 18:19:38,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204577376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:38,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:38,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:38,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45221286] [2024-06-27 18:19:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:38,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:38,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:38,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 169 transitions, 1873 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:38,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:38,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:38,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:39,165 INFO L124 PetriNetUnfolderBase]: 850/1785 cut-off events. [2024-06-27 18:19:39,166 INFO L125 PetriNetUnfolderBase]: For 40633/40633 co-relation queries the response was YES. [2024-06-27 18:19:39,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9034 conditions, 1785 events. 850/1785 cut-off events. For 40633/40633 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11405 event pairs, 211 based on Foata normal form. 12/1667 useless extension candidates. Maximal degree in co-relation 8967. Up to 1233 conditions per place. [2024-06-27 18:19:39,178 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 162 selfloop transitions, 24 changer transitions 0/195 dead transitions. [2024-06-27 18:19:39,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 195 transitions, 2429 flow [2024-06-27 18:19:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:19:39,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 18:19:39,180 INFO L175 Difference]: Start difference. First operand has 177 places, 169 transitions, 1873 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:19:39,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 195 transitions, 2429 flow [2024-06-27 18:19:39,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 195 transitions, 2369 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:39,264 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 1888 flow [2024-06-27 18:19:39,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1888, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2024-06-27 18:19:39,265 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 139 predicate places. [2024-06-27 18:19:39,265 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 1888 flow [2024-06-27 18:19:39,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:39,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:39,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:39,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:19:39,266 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:39,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:39,266 INFO L85 PathProgramCache]: Analyzing trace with hash -757026927, now seen corresponding path program 1 times [2024-06-27 18:19:39,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:39,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775282184] [2024-06-27 18:19:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:39,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:40,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:40,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775282184] [2024-06-27 18:19:40,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775282184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:40,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:40,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:40,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858107230] [2024-06-27 18:19:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:40,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:40,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:40,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:40,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 1888 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:40,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:40,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:41,485 INFO L124 PetriNetUnfolderBase]: 857/1793 cut-off events. [2024-06-27 18:19:41,486 INFO L125 PetriNetUnfolderBase]: For 31749/31749 co-relation queries the response was YES. [2024-06-27 18:19:41,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9083 conditions, 1793 events. 857/1793 cut-off events. For 31749/31749 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11454 event pairs, 207 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 9015. Up to 1322 conditions per place. [2024-06-27 18:19:41,498 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 126 selfloop transitions, 57 changer transitions 0/192 dead transitions. [2024-06-27 18:19:41,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 192 transitions, 2482 flow [2024-06-27 18:19:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:19:41,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:19:41,500 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 1888 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:19:41,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 192 transitions, 2482 flow [2024-06-27 18:19:41,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 192 transitions, 2431 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:41,579 INFO L231 Difference]: Finished difference. Result has 182 places, 172 transitions, 2004 flow [2024-06-27 18:19:41,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2004, PETRI_PLACES=182, PETRI_TRANSITIONS=172} [2024-06-27 18:19:41,580 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 142 predicate places. [2024-06-27 18:19:41,580 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 172 transitions, 2004 flow [2024-06-27 18:19:41,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:41,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:41,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:41,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:19:41,580 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:41,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -757257567, now seen corresponding path program 2 times [2024-06-27 18:19:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72401022] [2024-06-27 18:19:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:42,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72401022] [2024-06-27 18:19:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72401022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:42,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:42,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938473255] [2024-06-27 18:19:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:42,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:42,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 172 transitions, 2004 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:42,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:42,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:42,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:43,168 INFO L124 PetriNetUnfolderBase]: 855/1790 cut-off events. [2024-06-27 18:19:43,168 INFO L125 PetriNetUnfolderBase]: For 31547/31547 co-relation queries the response was YES. [2024-06-27 18:19:43,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9108 conditions, 1790 events. 855/1790 cut-off events. For 31547/31547 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11395 event pairs, 207 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 9039. Up to 1320 conditions per place. [2024-06-27 18:19:43,182 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 126 selfloop transitions, 56 changer transitions 0/191 dead transitions. [2024-06-27 18:19:43,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 191 transitions, 2456 flow [2024-06-27 18:19:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:19:43,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:19:43,186 INFO L175 Difference]: Start difference. First operand has 182 places, 172 transitions, 2004 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:19:43,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 191 transitions, 2456 flow [2024-06-27 18:19:43,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 191 transitions, 2300 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:43,276 INFO L231 Difference]: Finished difference. Result has 185 places, 172 transitions, 1965 flow [2024-06-27 18:19:43,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1965, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2024-06-27 18:19:43,280 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 145 predicate places. [2024-06-27 18:19:43,280 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 1965 flow [2024-06-27 18:19:43,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:43,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:43,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:43,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:19:43,281 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:43,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash 324612463, now seen corresponding path program 7 times [2024-06-27 18:19:43,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:43,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421635742] [2024-06-27 18:19:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:43,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:44,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421635742] [2024-06-27 18:19:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421635742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:44,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:44,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:44,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728698458] [2024-06-27 18:19:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:44,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:44,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:44,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:44,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 1965 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:44,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:44,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:44,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:44,594 INFO L124 PetriNetUnfolderBase]: 872/1831 cut-off events. [2024-06-27 18:19:44,595 INFO L125 PetriNetUnfolderBase]: For 33549/33549 co-relation queries the response was YES. [2024-06-27 18:19:44,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9255 conditions, 1831 events. 872/1831 cut-off events. For 33549/33549 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11813 event pairs, 237 based on Foata normal form. 2/1696 useless extension candidates. Maximal degree in co-relation 9185. Up to 1434 conditions per place. [2024-06-27 18:19:44,608 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 161 selfloop transitions, 22 changer transitions 0/192 dead transitions. [2024-06-27 18:19:44,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 192 transitions, 2432 flow [2024-06-27 18:19:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:19:44,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 18:19:44,610 INFO L175 Difference]: Start difference. First operand has 185 places, 172 transitions, 1965 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:19:44,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 192 transitions, 2432 flow [2024-06-27 18:19:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 192 transitions, 2277 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:19:44,698 INFO L231 Difference]: Finished difference. Result has 184 places, 174 transitions, 1896 flow [2024-06-27 18:19:44,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1896, PETRI_PLACES=184, PETRI_TRANSITIONS=174} [2024-06-27 18:19:44,699 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 144 predicate places. [2024-06-27 18:19:44,699 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 174 transitions, 1896 flow [2024-06-27 18:19:44,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:44,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:44,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:19:44,700 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:44,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:44,700 INFO L85 PathProgramCache]: Analyzing trace with hash 935022137, now seen corresponding path program 8 times [2024-06-27 18:19:44,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:44,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724820264] [2024-06-27 18:19:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:45,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724820264] [2024-06-27 18:19:45,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724820264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:45,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:45,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556819561] [2024-06-27 18:19:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:45,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:45,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 174 transitions, 1896 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:45,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:45,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:46,103 INFO L124 PetriNetUnfolderBase]: 889/1869 cut-off events. [2024-06-27 18:19:46,104 INFO L125 PetriNetUnfolderBase]: For 34942/34942 co-relation queries the response was YES. [2024-06-27 18:19:46,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9395 conditions, 1869 events. 889/1869 cut-off events. For 34942/34942 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12071 event pairs, 231 based on Foata normal form. 2/1731 useless extension candidates. Maximal degree in co-relation 9323. Up to 1439 conditions per place. [2024-06-27 18:19:46,121 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 167 selfloop transitions, 21 changer transitions 0/197 dead transitions. [2024-06-27 18:19:46,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 197 transitions, 2382 flow [2024-06-27 18:19:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:19:46,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-27 18:19:46,123 INFO L175 Difference]: Start difference. First operand has 184 places, 174 transitions, 1896 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:19:46,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 197 transitions, 2382 flow [2024-06-27 18:19:46,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 197 transitions, 2323 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:46,235 INFO L231 Difference]: Finished difference. Result has 187 places, 175 transitions, 1909 flow [2024-06-27 18:19:46,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1909, PETRI_PLACES=187, PETRI_TRANSITIONS=175} [2024-06-27 18:19:46,245 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 147 predicate places. [2024-06-27 18:19:46,246 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 175 transitions, 1909 flow [2024-06-27 18:19:46,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:46,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:46,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:46,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:19:46,247 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:46,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1171115655, now seen corresponding path program 9 times [2024-06-27 18:19:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267952751] [2024-06-27 18:19:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267952751] [2024-06-27 18:19:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267952751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455465944] [2024-06-27 18:19:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:47,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:47,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 175 transitions, 1909 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:47,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:47,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:47,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:47,790 INFO L124 PetriNetUnfolderBase]: 906/1911 cut-off events. [2024-06-27 18:19:47,790 INFO L125 PetriNetUnfolderBase]: For 36400/36400 co-relation queries the response was YES. [2024-06-27 18:19:47,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9571 conditions, 1911 events. 906/1911 cut-off events. For 36400/36400 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12492 event pairs, 247 based on Foata normal form. 2/1770 useless extension candidates. Maximal degree in co-relation 9498. Up to 1486 conditions per place. [2024-06-27 18:19:47,807 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 160 selfloop transitions, 25 changer transitions 0/194 dead transitions. [2024-06-27 18:19:47,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 194 transitions, 2375 flow [2024-06-27 18:19:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:19:47,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:19:47,808 INFO L175 Difference]: Start difference. First operand has 187 places, 175 transitions, 1909 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:19:47,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 194 transitions, 2375 flow [2024-06-27 18:19:47,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 194 transitions, 2313 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:47,968 INFO L231 Difference]: Finished difference. Result has 189 places, 176 transitions, 1929 flow [2024-06-27 18:19:47,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1929, PETRI_PLACES=189, PETRI_TRANSITIONS=176} [2024-06-27 18:19:47,969 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 149 predicate places. [2024-06-27 18:19:47,969 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 176 transitions, 1929 flow [2024-06-27 18:19:47,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:47,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:47,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:47,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:19:47,970 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:47,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash -307550209, now seen corresponding path program 10 times [2024-06-27 18:19:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833663924] [2024-06-27 18:19:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833663924] [2024-06-27 18:19:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833663924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354600643] [2024-06-27 18:19:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:48,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:48,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 176 transitions, 1929 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:48,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:48,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:48,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:49,304 INFO L124 PetriNetUnfolderBase]: 907/1922 cut-off events. [2024-06-27 18:19:49,304 INFO L125 PetriNetUnfolderBase]: For 34565/34565 co-relation queries the response was YES. [2024-06-27 18:19:49,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 1922 events. 907/1922 cut-off events. For 34565/34565 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12643 event pairs, 248 based on Foata normal form. 2/1779 useless extension candidates. Maximal degree in co-relation 9348. Up to 1459 conditions per place. [2024-06-27 18:19:49,319 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 152 selfloop transitions, 34 changer transitions 0/195 dead transitions. [2024-06-27 18:19:49,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 195 transitions, 2399 flow [2024-06-27 18:19:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:19:49,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:19:49,321 INFO L175 Difference]: Start difference. First operand has 189 places, 176 transitions, 1929 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:19:49,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 195 transitions, 2399 flow [2024-06-27 18:19:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 195 transitions, 2327 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:49,483 INFO L231 Difference]: Finished difference. Result has 191 places, 177 transitions, 1959 flow [2024-06-27 18:19:49,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1959, PETRI_PLACES=191, PETRI_TRANSITIONS=177} [2024-06-27 18:19:49,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 151 predicate places. [2024-06-27 18:19:49,484 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 177 transitions, 1959 flow [2024-06-27 18:19:49,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:49,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:49,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:49,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:19:49,485 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:49,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash -307543265, now seen corresponding path program 3 times [2024-06-27 18:19:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840794365] [2024-06-27 18:19:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840794365] [2024-06-27 18:19:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840794365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:50,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:50,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985383682] [2024-06-27 18:19:50,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:50,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:50,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:50,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:50,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 1959 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:50,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:50,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:50,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:51,266 INFO L124 PetriNetUnfolderBase]: 914/1931 cut-off events. [2024-06-27 18:19:51,267 INFO L125 PetriNetUnfolderBase]: For 33552/33552 co-relation queries the response was YES. [2024-06-27 18:19:51,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9442 conditions, 1931 events. 914/1931 cut-off events. For 33552/33552 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12668 event pairs, 244 based on Foata normal form. 1/1784 useless extension candidates. Maximal degree in co-relation 9367. Up to 1415 conditions per place. [2024-06-27 18:19:51,282 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 139 selfloop transitions, 53 changer transitions 0/201 dead transitions. [2024-06-27 18:19:51,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 201 transitions, 2522 flow [2024-06-27 18:19:51,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:19:51,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 18:19:51,283 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 1959 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:19:51,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 201 transitions, 2522 flow [2024-06-27 18:19:51,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 201 transitions, 2430 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:51,388 INFO L231 Difference]: Finished difference. Result has 196 places, 185 transitions, 2146 flow [2024-06-27 18:19:51,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2146, PETRI_PLACES=196, PETRI_TRANSITIONS=185} [2024-06-27 18:19:51,388 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 156 predicate places. [2024-06-27 18:19:51,389 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 185 transitions, 2146 flow [2024-06-27 18:19:51,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:51,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:51,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:51,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:19:51,389 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:51,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash -734093215, now seen corresponding path program 2 times [2024-06-27 18:19:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:51,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434263505] [2024-06-27 18:19:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:51,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:52,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:52,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434263505] [2024-06-27 18:19:52,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434263505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:52,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:52,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:52,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980471872] [2024-06-27 18:19:52,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:52,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:52,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:52,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 2146 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:52,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:52,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:52,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:52,727 INFO L124 PetriNetUnfolderBase]: 1002/2155 cut-off events. [2024-06-27 18:19:52,727 INFO L125 PetriNetUnfolderBase]: For 51063/51063 co-relation queries the response was YES. [2024-06-27 18:19:52,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10550 conditions, 2155 events. 1002/2155 cut-off events. For 51063/51063 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14724 event pairs, 282 based on Foata normal form. 12/2007 useless extension candidates. Maximal degree in co-relation 10472. Up to 1503 conditions per place. [2024-06-27 18:19:52,746 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 171 selfloop transitions, 28 changer transitions 0/208 dead transitions. [2024-06-27 18:19:52,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 208 transitions, 2706 flow [2024-06-27 18:19:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:19:52,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 18:19:52,747 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 2146 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:19:52,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 208 transitions, 2706 flow [2024-06-27 18:19:52,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 208 transitions, 2600 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:52,889 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 2126 flow [2024-06-27 18:19:52,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2126, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2024-06-27 18:19:52,889 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-06-27 18:19:52,890 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 2126 flow [2024-06-27 18:19:52,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:52,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:52,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:52,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:19:52,890 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:52,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1171108711, now seen corresponding path program 4 times [2024-06-27 18:19:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995324810] [2024-06-27 18:19:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:53,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995324810] [2024-06-27 18:19:53,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995324810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:53,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61133499] [2024-06-27 18:19:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:53,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:53,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:53,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 186 transitions, 2126 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:53,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:53,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:54,275 INFO L124 PetriNetUnfolderBase]: 1009/2164 cut-off events. [2024-06-27 18:19:54,276 INFO L125 PetriNetUnfolderBase]: For 38250/38250 co-relation queries the response was YES. [2024-06-27 18:19:54,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 2164 events. 1009/2164 cut-off events. For 38250/38250 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14783 event pairs, 292 based on Foata normal form. 1/1999 useless extension candidates. Maximal degree in co-relation 10514. Up to 1656 conditions per place. [2024-06-27 18:19:54,294 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 159 selfloop transitions, 37 changer transitions 0/205 dead transitions. [2024-06-27 18:19:54,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 205 transitions, 2740 flow [2024-06-27 18:19:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:19:54,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:19:54,297 INFO L175 Difference]: Start difference. First operand has 199 places, 186 transitions, 2126 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:19:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 205 transitions, 2740 flow [2024-06-27 18:19:54,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 205 transitions, 2680 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:54,443 INFO L231 Difference]: Finished difference. Result has 202 places, 188 transitions, 2197 flow [2024-06-27 18:19:54,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2197, PETRI_PLACES=202, PETRI_TRANSITIONS=188} [2024-06-27 18:19:54,444 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 162 predicate places. [2024-06-27 18:19:54,444 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 188 transitions, 2197 flow [2024-06-27 18:19:54,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:54,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:54,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:54,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:19:54,445 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:54,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash 331106157, now seen corresponding path program 5 times [2024-06-27 18:19:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:54,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968900219] [2024-06-27 18:19:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:55,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:55,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968900219] [2024-06-27 18:19:55,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968900219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:55,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:55,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:55,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795420345] [2024-06-27 18:19:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:55,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:55,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:55,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:55,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 188 transitions, 2197 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:55,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:55,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:55,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:56,274 INFO L124 PetriNetUnfolderBase]: 1007/2161 cut-off events. [2024-06-27 18:19:56,274 INFO L125 PetriNetUnfolderBase]: For 37260/37260 co-relation queries the response was YES. [2024-06-27 18:19:56,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10518 conditions, 2161 events. 1007/2161 cut-off events. For 37260/37260 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14789 event pairs, 292 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 10438. Up to 1654 conditions per place. [2024-06-27 18:19:56,292 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 157 selfloop transitions, 36 changer transitions 0/202 dead transitions. [2024-06-27 18:19:56,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 2637 flow [2024-06-27 18:19:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:19:56,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:19:56,294 INFO L175 Difference]: Start difference. First operand has 202 places, 188 transitions, 2197 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:19:56,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 2637 flow [2024-06-27 18:19:56,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 2497 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:56,433 INFO L231 Difference]: Finished difference. Result has 203 places, 188 transitions, 2138 flow [2024-06-27 18:19:56,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2138, PETRI_PLACES=203, PETRI_TRANSITIONS=188} [2024-06-27 18:19:56,434 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 163 predicate places. [2024-06-27 18:19:56,434 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 188 transitions, 2138 flow [2024-06-27 18:19:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:56,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:19:56,435 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:56,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1372520677, now seen corresponding path program 6 times [2024-06-27 18:19:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:56,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863661241] [2024-06-27 18:19:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:56,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:57,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863661241] [2024-06-27 18:19:57,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863661241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:57,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:57,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20104035] [2024-06-27 18:19:57,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:57,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:57,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:57,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 188 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:57,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:57,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:57,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:58,318 INFO L124 PetriNetUnfolderBase]: 1005/2158 cut-off events. [2024-06-27 18:19:58,318 INFO L125 PetriNetUnfolderBase]: For 35662/35662 co-relation queries the response was YES. [2024-06-27 18:19:58,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 2158 events. 1005/2158 cut-off events. For 35662/35662 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14752 event pairs, 292 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 10249. Up to 1502 conditions per place. [2024-06-27 18:19:58,339 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 128 selfloop transitions, 68 changer transitions 0/205 dead transitions. [2024-06-27 18:19:58,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 205 transitions, 2704 flow [2024-06-27 18:19:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:19:58,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:19:58,340 INFO L175 Difference]: Start difference. First operand has 203 places, 188 transitions, 2138 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:19:58,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 205 transitions, 2704 flow [2024-06-27 18:19:58,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 205 transitions, 2601 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:58,477 INFO L231 Difference]: Finished difference. Result has 206 places, 188 transitions, 2176 flow [2024-06-27 18:19:58,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=206, PETRI_TRANSITIONS=188} [2024-06-27 18:19:58,478 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 166 predicate places. [2024-06-27 18:19:58,478 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 188 transitions, 2176 flow [2024-06-27 18:19:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:58,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:58,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:19:58,478 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:58,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1372511997, now seen corresponding path program 3 times [2024-06-27 18:19:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231784072] [2024-06-27 18:19:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231784072] [2024-06-27 18:19:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231784072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:59,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256148765] [2024-06-27 18:19:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:59,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:19:59,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 188 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:59,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:59,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:19:59,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:59,763 INFO L124 PetriNetUnfolderBase]: 1022/2198 cut-off events. [2024-06-27 18:19:59,763 INFO L125 PetriNetUnfolderBase]: For 38942/38942 co-relation queries the response was YES. [2024-06-27 18:19:59,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 2198 events. 1022/2198 cut-off events. For 38942/38942 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15117 event pairs, 295 based on Foata normal form. 2/2032 useless extension candidates. Maximal degree in co-relation 10570. Up to 1651 conditions per place. [2024-06-27 18:19:59,781 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 159 selfloop transitions, 41 changer transitions 0/209 dead transitions. [2024-06-27 18:19:59,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 209 transitions, 2678 flow [2024-06-27 18:19:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:19:59,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:19:59,783 INFO L175 Difference]: Start difference. First operand has 206 places, 188 transitions, 2176 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:19:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 209 transitions, 2678 flow [2024-06-27 18:19:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 209 transitions, 2509 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:19:59,900 INFO L231 Difference]: Finished difference. Result has 206 places, 189 transitions, 2119 flow [2024-06-27 18:19:59,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2119, PETRI_PLACES=206, PETRI_TRANSITIONS=189} [2024-06-27 18:19:59,902 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 166 predicate places. [2024-06-27 18:19:59,902 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 189 transitions, 2119 flow [2024-06-27 18:19:59,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:59,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:59,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:59,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:19:59,903 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:59,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1087420807, now seen corresponding path program 7 times [2024-06-27 18:19:59,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:59,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745420053] [2024-06-27 18:19:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:59,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745420053] [2024-06-27 18:20:00,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745420053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:00,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:00,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:00,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832627912] [2024-06-27 18:20:00,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:00,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:00,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:01,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:01,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 189 transitions, 2119 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:01,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:01,704 INFO L124 PetriNetUnfolderBase]: 1020/2195 cut-off events. [2024-06-27 18:20:01,704 INFO L125 PetriNetUnfolderBase]: For 36203/36203 co-relation queries the response was YES. [2024-06-27 18:20:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 2195 events. 1020/2195 cut-off events. For 36203/36203 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15080 event pairs, 300 based on Foata normal form. 1/2028 useless extension candidates. Maximal degree in co-relation 10373. Up to 1734 conditions per place. [2024-06-27 18:20:01,798 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 175 selfloop transitions, 21 changer transitions 0/205 dead transitions. [2024-06-27 18:20:01,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 205 transitions, 2573 flow [2024-06-27 18:20:01,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:20:01,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:20:01,800 INFO L175 Difference]: Start difference. First operand has 206 places, 189 transitions, 2119 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:20:01,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 205 transitions, 2573 flow [2024-06-27 18:20:01,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 205 transitions, 2452 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:01,924 INFO L231 Difference]: Finished difference. Result has 209 places, 189 transitions, 2045 flow [2024-06-27 18:20:01,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2045, PETRI_PLACES=209, PETRI_TRANSITIONS=189} [2024-06-27 18:20:01,925 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 169 predicate places. [2024-06-27 18:20:01,926 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 189 transitions, 2045 flow [2024-06-27 18:20:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:01,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:01,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:20:01,926 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:01,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash -22204075, now seen corresponding path program 4 times [2024-06-27 18:20:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:01,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902283586] [2024-06-27 18:20:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:01,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:02,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902283586] [2024-06-27 18:20:02,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902283586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:02,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:02,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735171188] [2024-06-27 18:20:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:02,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:02,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:02,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 189 transitions, 2045 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:02,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:02,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:02,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:03,402 INFO L124 PetriNetUnfolderBase]: 1043/2244 cut-off events. [2024-06-27 18:20:03,403 INFO L125 PetriNetUnfolderBase]: For 38200/38200 co-relation queries the response was YES. [2024-06-27 18:20:03,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10524 conditions, 2244 events. 1043/2244 cut-off events. For 38200/38200 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15471 event pairs, 303 based on Foata normal form. 2/2075 useless extension candidates. Maximal degree in co-relation 10440. Up to 1776 conditions per place. [2024-06-27 18:20:03,422 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 187 selfloop transitions, 16 changer transitions 0/212 dead transitions. [2024-06-27 18:20:03,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 212 transitions, 2580 flow [2024-06-27 18:20:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:20:03,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:20:03,424 INFO L175 Difference]: Start difference. First operand has 209 places, 189 transitions, 2045 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:20:03,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 212 transitions, 2580 flow [2024-06-27 18:20:03,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 212 transitions, 2525 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:03,600 INFO L231 Difference]: Finished difference. Result has 211 places, 192 transitions, 2086 flow [2024-06-27 18:20:03,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2086, PETRI_PLACES=211, PETRI_TRANSITIONS=192} [2024-06-27 18:20:03,601 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 171 predicate places. [2024-06-27 18:20:03,601 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 192 transitions, 2086 flow [2024-06-27 18:20:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:03,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:03,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:20:03,602 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:03,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1087123827, now seen corresponding path program 5 times [2024-06-27 18:20:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782853536] [2024-06-27 18:20:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:04,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:04,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782853536] [2024-06-27 18:20:04,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782853536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:04,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:04,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156239710] [2024-06-27 18:20:04,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:04,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:04,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:04,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 192 transitions, 2086 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:04,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:04,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:04,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:04,977 INFO L124 PetriNetUnfolderBase]: 1060/2283 cut-off events. [2024-06-27 18:20:04,977 INFO L125 PetriNetUnfolderBase]: For 40424/40424 co-relation queries the response was YES. [2024-06-27 18:20:04,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10819 conditions, 2283 events. 1060/2283 cut-off events. For 40424/40424 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15842 event pairs, 316 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 10733. Up to 1776 conditions per place. [2024-06-27 18:20:04,997 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 183 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-06-27 18:20:04,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 2588 flow [2024-06-27 18:20:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 18:20:04,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-27 18:20:04,999 INFO L175 Difference]: Start difference. First operand has 211 places, 192 transitions, 2086 flow. Second operand 9 states and 145 transitions. [2024-06-27 18:20:04,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 2588 flow [2024-06-27 18:20:05,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 211 transitions, 2533 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:05,135 INFO L231 Difference]: Finished difference. Result has 213 places, 193 transitions, 2105 flow [2024-06-27 18:20:05,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2105, PETRI_PLACES=213, PETRI_TRANSITIONS=193} [2024-06-27 18:20:05,135 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 173 predicate places. [2024-06-27 18:20:05,135 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 193 transitions, 2105 flow [2024-06-27 18:20:05,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:05,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:05,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:20:05,136 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:05,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash -11728555, now seen corresponding path program 6 times [2024-06-27 18:20:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:05,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815646597] [2024-06-27 18:20:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:06,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:06,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815646597] [2024-06-27 18:20:06,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815646597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:06,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:06,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:06,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670827406] [2024-06-27 18:20:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:06,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:06,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:06,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 193 transitions, 2105 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:06,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:06,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:06,611 INFO L124 PetriNetUnfolderBase]: 1057/2270 cut-off events. [2024-06-27 18:20:06,612 INFO L125 PetriNetUnfolderBase]: For 36796/36796 co-relation queries the response was YES. [2024-06-27 18:20:06,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10579 conditions, 2270 events. 1057/2270 cut-off events. For 36796/36796 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15671 event pairs, 302 based on Foata normal form. 2/2106 useless extension candidates. Maximal degree in co-relation 10492. Up to 1719 conditions per place. [2024-06-27 18:20:06,631 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 187 selfloop transitions, 21 changer transitions 0/217 dead transitions. [2024-06-27 18:20:06,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 217 transitions, 2615 flow [2024-06-27 18:20:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:20:06,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 18:20:06,633 INFO L175 Difference]: Start difference. First operand has 213 places, 193 transitions, 2105 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:20:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 217 transitions, 2615 flow [2024-06-27 18:20:06,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 217 transitions, 2555 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:06,774 INFO L231 Difference]: Finished difference. Result has 216 places, 193 transitions, 2091 flow [2024-06-27 18:20:06,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=216, PETRI_TRANSITIONS=193} [2024-06-27 18:20:06,775 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2024-06-27 18:20:06,775 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 193 transitions, 2091 flow [2024-06-27 18:20:06,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:06,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:20:06,775 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:06,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1407276837, now seen corresponding path program 1 times [2024-06-27 18:20:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868083494] [2024-06-27 18:20:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:07,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:07,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868083494] [2024-06-27 18:20:07,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868083494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:07,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:07,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898957150] [2024-06-27 18:20:07,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:07,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:07,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 193 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:07,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:07,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:07,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:08,108 INFO L124 PetriNetUnfolderBase]: 1111/2387 cut-off events. [2024-06-27 18:20:08,108 INFO L125 PetriNetUnfolderBase]: For 46222/46222 co-relation queries the response was YES. [2024-06-27 18:20:08,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10945 conditions, 2387 events. 1111/2387 cut-off events. For 46222/46222 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16727 event pairs, 288 based on Foata normal form. 8/2220 useless extension candidates. Maximal degree in co-relation 10857. Up to 1589 conditions per place. [2024-06-27 18:20:08,130 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 175 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-06-27 18:20:08,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 228 transitions, 2687 flow [2024-06-27 18:20:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:20:08,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 18:20:08,132 INFO L175 Difference]: Start difference. First operand has 216 places, 193 transitions, 2091 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:20:08,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 228 transitions, 2687 flow [2024-06-27 18:20:08,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 228 transitions, 2579 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:08,298 INFO L231 Difference]: Finished difference. Result has 216 places, 193 transitions, 2074 flow [2024-06-27 18:20:08,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2074, PETRI_PLACES=216, PETRI_TRANSITIONS=193} [2024-06-27 18:20:08,299 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2024-06-27 18:20:08,299 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 193 transitions, 2074 flow [2024-06-27 18:20:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:08,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:08,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:20:08,300 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:08,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1924392563, now seen corresponding path program 2 times [2024-06-27 18:20:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830070295] [2024-06-27 18:20:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:09,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:09,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830070295] [2024-06-27 18:20:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830070295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:09,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210196445] [2024-06-27 18:20:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:09,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:09,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 193 transitions, 2074 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:09,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:09,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:09,890 INFO L124 PetriNetUnfolderBase]: 1249/2747 cut-off events. [2024-06-27 18:20:09,890 INFO L125 PetriNetUnfolderBase]: For 67687/67687 co-relation queries the response was YES. [2024-06-27 18:20:09,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12811 conditions, 2747 events. 1249/2747 cut-off events. For 67687/67687 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20295 event pairs, 399 based on Foata normal form. 8/2565 useless extension candidates. Maximal degree in co-relation 12724. Up to 1833 conditions per place. [2024-06-27 18:20:09,916 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 180 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2024-06-27 18:20:09,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 230 transitions, 2874 flow [2024-06-27 18:20:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:20:09,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:20:09,918 INFO L175 Difference]: Start difference. First operand has 216 places, 193 transitions, 2074 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:20:09,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 230 transitions, 2874 flow [2024-06-27 18:20:10,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 230 transitions, 2787 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:10,079 INFO L231 Difference]: Finished difference. Result has 218 places, 193 transitions, 2072 flow [2024-06-27 18:20:10,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2072, PETRI_PLACES=218, PETRI_TRANSITIONS=193} [2024-06-27 18:20:10,080 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 178 predicate places. [2024-06-27 18:20:10,080 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 193 transitions, 2072 flow [2024-06-27 18:20:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:10,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:10,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:20:10,080 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:10,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1924599953, now seen corresponding path program 3 times [2024-06-27 18:20:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11886514] [2024-06-27 18:20:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:11,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11886514] [2024-06-27 18:20:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11886514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542616117] [2024-06-27 18:20:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:11,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:11,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:11,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 193 transitions, 2072 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:11,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:11,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:11,848 INFO L124 PetriNetUnfolderBase]: 1236/2756 cut-off events. [2024-06-27 18:20:11,848 INFO L125 PetriNetUnfolderBase]: For 54968/54968 co-relation queries the response was YES. [2024-06-27 18:20:11,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 2756 events. 1236/2756 cut-off events. For 54968/54968 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 20507 event pairs, 442 based on Foata normal form. 10/2567 useless extension candidates. Maximal degree in co-relation 12006. Up to 1978 conditions per place. [2024-06-27 18:20:11,917 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 172 selfloop transitions, 41 changer transitions 0/222 dead transitions. [2024-06-27 18:20:11,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 222 transitions, 2680 flow [2024-06-27 18:20:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:20:11,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-27 18:20:11,919 INFO L175 Difference]: Start difference. First operand has 218 places, 193 transitions, 2072 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:20:11,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 222 transitions, 2680 flow [2024-06-27 18:20:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 222 transitions, 2599 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:12,053 INFO L231 Difference]: Finished difference. Result has 220 places, 193 transitions, 2077 flow [2024-06-27 18:20:12,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2077, PETRI_PLACES=220, PETRI_TRANSITIONS=193} [2024-06-27 18:20:12,053 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 180 predicate places. [2024-06-27 18:20:12,053 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 193 transitions, 2077 flow [2024-06-27 18:20:12,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:12,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:12,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:12,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:20:12,054 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:12,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1549379907, now seen corresponding path program 4 times [2024-06-27 18:20:12,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:12,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369631307] [2024-06-27 18:20:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369631307] [2024-06-27 18:20:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369631307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:12,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:12,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:12,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812932993] [2024-06-27 18:20:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:12,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:12,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:12,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 193 transitions, 2077 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:12,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:12,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:12,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:13,581 INFO L124 PetriNetUnfolderBase]: 1253/2770 cut-off events. [2024-06-27 18:20:13,581 INFO L125 PetriNetUnfolderBase]: For 41434/41434 co-relation queries the response was YES. [2024-06-27 18:20:13,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12304 conditions, 2770 events. 1253/2770 cut-off events. For 41434/41434 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20591 event pairs, 394 based on Foata normal form. 2/2572 useless extension candidates. Maximal degree in co-relation 12215. Up to 2072 conditions per place. [2024-06-27 18:20:13,606 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 189 selfloop transitions, 30 changer transitions 0/228 dead transitions. [2024-06-27 18:20:13,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 228 transitions, 2667 flow [2024-06-27 18:20:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:20:13,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 18:20:13,607 INFO L175 Difference]: Start difference. First operand has 220 places, 193 transitions, 2077 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:20:13,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 228 transitions, 2667 flow [2024-06-27 18:20:13,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 228 transitions, 2587 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:13,748 INFO L231 Difference]: Finished difference. Result has 222 places, 194 transitions, 2085 flow [2024-06-27 18:20:13,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2085, PETRI_PLACES=222, PETRI_TRANSITIONS=194} [2024-06-27 18:20:13,749 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 182 predicate places. [2024-06-27 18:20:13,749 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 194 transitions, 2085 flow [2024-06-27 18:20:13,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:13,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:13,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:13,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:20:13,750 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:13,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:13,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2110228407, now seen corresponding path program 5 times [2024-06-27 18:20:13,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:13,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715193094] [2024-06-27 18:20:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:13,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715193094] [2024-06-27 18:20:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715193094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:14,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962766102] [2024-06-27 18:20:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:14,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:14,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:14,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:14,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 194 transitions, 2085 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:14,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:14,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:14,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:15,395 INFO L124 PetriNetUnfolderBase]: 1270/2826 cut-off events. [2024-06-27 18:20:15,396 INFO L125 PetriNetUnfolderBase]: For 43904/43904 co-relation queries the response was YES. [2024-06-27 18:20:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12689 conditions, 2826 events. 1270/2826 cut-off events. For 43904/43904 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21199 event pairs, 476 based on Foata normal form. 2/2622 useless extension candidates. Maximal degree in co-relation 12599. Up to 2187 conditions per place. [2024-06-27 18:20:15,421 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 179 selfloop transitions, 29 changer transitions 0/217 dead transitions. [2024-06-27 18:20:15,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 217 transitions, 2609 flow [2024-06-27 18:20:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:20:15,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-27 18:20:15,423 INFO L175 Difference]: Start difference. First operand has 222 places, 194 transitions, 2085 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:20:15,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 217 transitions, 2609 flow [2024-06-27 18:20:15,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 217 transitions, 2533 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:15,564 INFO L231 Difference]: Finished difference. Result has 224 places, 195 transitions, 2097 flow [2024-06-27 18:20:15,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2097, PETRI_PLACES=224, PETRI_TRANSITIONS=195} [2024-06-27 18:20:15,564 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 184 predicate places. [2024-06-27 18:20:15,565 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 195 transitions, 2097 flow [2024-06-27 18:20:15,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:15,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:15,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:20:15,565 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:15,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:15,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2103078567, now seen corresponding path program 6 times [2024-06-27 18:20:15,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:15,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723305052] [2024-06-27 18:20:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:15,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723305052] [2024-06-27 18:20:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723305052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:16,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964012566] [2024-06-27 18:20:16,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:16,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:16,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 195 transitions, 2097 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:16,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:16,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:16,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:17,357 INFO L124 PetriNetUnfolderBase]: 1334/2927 cut-off events. [2024-06-27 18:20:17,358 INFO L125 PetriNetUnfolderBase]: For 47301/47301 co-relation queries the response was YES. [2024-06-27 18:20:17,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13386 conditions, 2927 events. 1334/2927 cut-off events. For 47301/47301 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21782 event pairs, 474 based on Foata normal form. 2/2716 useless extension candidates. Maximal degree in co-relation 13295. Up to 2297 conditions per place. [2024-06-27 18:20:17,383 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 194 selfloop transitions, 30 changer transitions 0/233 dead transitions. [2024-06-27 18:20:17,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 233 transitions, 2871 flow [2024-06-27 18:20:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:20:17,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-27 18:20:17,385 INFO L175 Difference]: Start difference. First operand has 224 places, 195 transitions, 2097 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:20:17,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 233 transitions, 2871 flow [2024-06-27 18:20:17,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 233 transitions, 2772 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:17,542 INFO L231 Difference]: Finished difference. Result has 233 places, 212 transitions, 2350 flow [2024-06-27 18:20:17,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2350, PETRI_PLACES=233, PETRI_TRANSITIONS=212} [2024-06-27 18:20:17,543 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 193 predicate places. [2024-06-27 18:20:17,543 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 212 transitions, 2350 flow [2024-06-27 18:20:17,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:17,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:17,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:20:17,544 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:17,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2102871177, now seen corresponding path program 7 times [2024-06-27 18:20:17,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:17,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138612386] [2024-06-27 18:20:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:18,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:18,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138612386] [2024-06-27 18:20:18,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138612386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:18,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:18,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:18,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027268646] [2024-06-27 18:20:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:18,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:18,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:18,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:18,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 212 transitions, 2350 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:18,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:18,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:18,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:19,170 INFO L124 PetriNetUnfolderBase]: 1435/3165 cut-off events. [2024-06-27 18:20:19,170 INFO L125 PetriNetUnfolderBase]: For 74202/74202 co-relation queries the response was YES. [2024-06-27 18:20:19,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15431 conditions, 3165 events. 1435/3165 cut-off events. For 74202/74202 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 24195 event pairs, 517 based on Foata normal form. 2/2946 useless extension candidates. Maximal degree in co-relation 15335. Up to 2167 conditions per place. [2024-06-27 18:20:19,200 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 185 selfloop transitions, 50 changer transitions 0/244 dead transitions. [2024-06-27 18:20:19,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 244 transitions, 3162 flow [2024-06-27 18:20:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:20:19,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 18:20:19,201 INFO L175 Difference]: Start difference. First operand has 233 places, 212 transitions, 2350 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:20:19,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 244 transitions, 3162 flow [2024-06-27 18:20:19,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 244 transitions, 3087 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:19,427 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 2437 flow [2024-06-27 18:20:19,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2437, PETRI_PLACES=237, PETRI_TRANSITIONS=214} [2024-06-27 18:20:19,428 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-27 18:20:19,428 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 2437 flow [2024-06-27 18:20:19,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:19,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:19,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:19,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:20:19,429 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:19,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2100665555, now seen corresponding path program 8 times [2024-06-27 18:20:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13612438] [2024-06-27 18:20:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13612438] [2024-06-27 18:20:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13612438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:20,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776296172] [2024-06-27 18:20:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:20,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:20,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:20,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:20,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 214 transitions, 2437 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:20,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:20,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:20,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:21,130 INFO L124 PetriNetUnfolderBase]: 1452/3205 cut-off events. [2024-06-27 18:20:21,130 INFO L125 PetriNetUnfolderBase]: For 77194/77194 co-relation queries the response was YES. [2024-06-27 18:20:21,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15849 conditions, 3205 events. 1452/3205 cut-off events. For 77194/77194 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 24596 event pairs, 520 based on Foata normal form. 2/2980 useless extension candidates. Maximal degree in co-relation 15753. Up to 2462 conditions per place. [2024-06-27 18:20:21,164 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 205 selfloop transitions, 28 changer transitions 0/242 dead transitions. [2024-06-27 18:20:21,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 242 transitions, 3067 flow [2024-06-27 18:20:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:20:21,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:20:21,166 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 2437 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:20:21,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 242 transitions, 3067 flow [2024-06-27 18:20:21,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 242 transitions, 2977 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:21,462 INFO L231 Difference]: Finished difference. Result has 241 places, 216 transitions, 2469 flow [2024-06-27 18:20:21,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2469, PETRI_PLACES=241, PETRI_TRANSITIONS=216} [2024-06-27 18:20:21,462 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 201 predicate places. [2024-06-27 18:20:21,463 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 216 transitions, 2469 flow [2024-06-27 18:20:21,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:21,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:21,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:21,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:20:21,463 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:21,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2095159025, now seen corresponding path program 9 times [2024-06-27 18:20:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:21,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662432155] [2024-06-27 18:20:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:22,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662432155] [2024-06-27 18:20:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662432155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:22,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:22,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:22,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773962489] [2024-06-27 18:20:22,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:22,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:22,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:22,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:22,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 216 transitions, 2469 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:22,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:22,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:22,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:23,161 INFO L124 PetriNetUnfolderBase]: 1506/3314 cut-off events. [2024-06-27 18:20:23,162 INFO L125 PetriNetUnfolderBase]: For 92186/92186 co-relation queries the response was YES. [2024-06-27 18:20:23,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16393 conditions, 3314 events. 1506/3314 cut-off events. For 92186/92186 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 25642 event pairs, 530 based on Foata normal form. 8/3095 useless extension candidates. Maximal degree in co-relation 16295. Up to 2493 conditions per place. [2024-06-27 18:20:23,197 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 219 selfloop transitions, 21 changer transitions 0/249 dead transitions. [2024-06-27 18:20:23,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 249 transitions, 3117 flow [2024-06-27 18:20:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:20:23,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:20:23,199 INFO L175 Difference]: Start difference. First operand has 241 places, 216 transitions, 2469 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:20:23,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 249 transitions, 3117 flow [2024-06-27 18:20:23,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 3011 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:23,520 INFO L231 Difference]: Finished difference. Result has 245 places, 216 transitions, 2408 flow [2024-06-27 18:20:23,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2408, PETRI_PLACES=245, PETRI_TRANSITIONS=216} [2024-06-27 18:20:23,520 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 205 predicate places. [2024-06-27 18:20:23,520 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 216 transitions, 2408 flow [2024-06-27 18:20:23,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:23,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:23,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:23,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:20:23,521 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:23,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1811862241, now seen corresponding path program 1 times [2024-06-27 18:20:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:23,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121299574] [2024-06-27 18:20:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:23,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121299574] [2024-06-27 18:20:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121299574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:24,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:20:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916126055] [2024-06-27 18:20:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:20:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:20:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:20:25,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:25,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 216 transitions, 2408 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:25,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:25,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:25,923 INFO L124 PetriNetUnfolderBase]: 1560/3507 cut-off events. [2024-06-27 18:20:25,923 INFO L125 PetriNetUnfolderBase]: For 93904/93904 co-relation queries the response was YES. [2024-06-27 18:20:25,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16769 conditions, 3507 events. 1560/3507 cut-off events. For 93904/93904 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27843 event pairs, 609 based on Foata normal form. 8/3269 useless extension candidates. Maximal degree in co-relation 16669. Up to 2528 conditions per place. [2024-06-27 18:20:25,962 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 167 selfloop transitions, 69 changer transitions 0/245 dead transitions. [2024-06-27 18:20:25,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 245 transitions, 3065 flow [2024-06-27 18:20:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:20:25,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:20:25,964 INFO L175 Difference]: Start difference. First operand has 245 places, 216 transitions, 2408 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:20:25,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 245 transitions, 3065 flow [2024-06-27 18:20:26,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 245 transitions, 3024 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:26,301 INFO L231 Difference]: Finished difference. Result has 249 places, 218 transitions, 2575 flow [2024-06-27 18:20:26,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2575, PETRI_PLACES=249, PETRI_TRANSITIONS=218} [2024-06-27 18:20:26,302 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 209 predicate places. [2024-06-27 18:20:26,302 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 218 transitions, 2575 flow [2024-06-27 18:20:26,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:26,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:26,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:26,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:20:26,302 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:26,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2110505113, now seen corresponding path program 2 times [2024-06-27 18:20:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080457064] [2024-06-27 18:20:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:26,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:27,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:27,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080457064] [2024-06-27 18:20:27,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080457064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:27,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:27,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433753109] [2024-06-27 18:20:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:27,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:27,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:27,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 218 transitions, 2575 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:27,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:27,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:27,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,452 INFO L124 PetriNetUnfolderBase]: 1661/3771 cut-off events. [2024-06-27 18:20:28,452 INFO L125 PetriNetUnfolderBase]: For 114933/114933 co-relation queries the response was YES. [2024-06-27 18:20:28,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18765 conditions, 3771 events. 1661/3771 cut-off events. For 114933/114933 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 30649 event pairs, 643 based on Foata normal form. 6/3525 useless extension candidates. Maximal degree in co-relation 18663. Up to 2116 conditions per place. [2024-06-27 18:20:28,491 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 200 selfloop transitions, 41 changer transitions 0/250 dead transitions. [2024-06-27 18:20:28,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 250 transitions, 3387 flow [2024-06-27 18:20:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:20:28,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 18:20:28,492 INFO L175 Difference]: Start difference. First operand has 249 places, 218 transitions, 2575 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:20:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 250 transitions, 3387 flow [2024-06-27 18:20:28,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 3248 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:28,902 INFO L231 Difference]: Finished difference. Result has 251 places, 218 transitions, 2521 flow [2024-06-27 18:20:28,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2521, PETRI_PLACES=251, PETRI_TRANSITIONS=218} [2024-06-27 18:20:28,902 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 211 predicate places. [2024-06-27 18:20:28,902 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 218 transitions, 2521 flow [2024-06-27 18:20:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:28,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:28,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:28,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:20:28,903 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:28,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash -349335687, now seen corresponding path program 3 times [2024-06-27 18:20:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955009596] [2024-06-27 18:20:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955009596] [2024-06-27 18:20:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955009596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:20:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834499107] [2024-06-27 18:20:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:30,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:20:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:30,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:20:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:20:30,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:30,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 218 transitions, 2521 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:30,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:30,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:30,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:31,524 INFO L124 PetriNetUnfolderBase]: 1692/3865 cut-off events. [2024-06-27 18:20:31,524 INFO L125 PetriNetUnfolderBase]: For 118804/118804 co-relation queries the response was YES. [2024-06-27 18:20:31,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 3865 events. 1692/3865 cut-off events. For 118804/118804 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 31787 event pairs, 721 based on Foata normal form. 10/3608 useless extension candidates. Maximal degree in co-relation 18563. Up to 2742 conditions per place. [2024-06-27 18:20:31,566 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 168 selfloop transitions, 68 changer transitions 0/245 dead transitions. [2024-06-27 18:20:31,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 245 transitions, 3135 flow [2024-06-27 18:20:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:20:31,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 18:20:31,568 INFO L175 Difference]: Start difference. First operand has 251 places, 218 transitions, 2521 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:20:31,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 245 transitions, 3135 flow [2024-06-27 18:20:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 245 transitions, 3052 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:32,070 INFO L231 Difference]: Finished difference. Result has 254 places, 218 transitions, 2580 flow [2024-06-27 18:20:32,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2580, PETRI_PLACES=254, PETRI_TRANSITIONS=218} [2024-06-27 18:20:32,071 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 214 predicate places. [2024-06-27 18:20:32,071 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 218 transitions, 2580 flow [2024-06-27 18:20:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:32,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:32,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:20:32,072 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:32,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2110495813, now seen corresponding path program 4 times [2024-06-27 18:20:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:32,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503443521] [2024-06-27 18:20:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:32,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:33,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:33,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503443521] [2024-06-27 18:20:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503443521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:33,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:33,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420095497] [2024-06-27 18:20:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:33,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:33,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:33,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:33,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 218 transitions, 2580 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:33,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:33,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:33,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:34,004 INFO L124 PetriNetUnfolderBase]: 1638/3735 cut-off events. [2024-06-27 18:20:34,004 INFO L125 PetriNetUnfolderBase]: For 81502/81502 co-relation queries the response was YES. [2024-06-27 18:20:34,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17339 conditions, 3735 events. 1638/3735 cut-off events. For 81502/81502 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 30419 event pairs, 655 based on Foata normal form. 8/3481 useless extension candidates. Maximal degree in co-relation 17235. Up to 2699 conditions per place. [2024-06-27 18:20:34,044 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 188 selfloop transitions, 46 changer transitions 0/243 dead transitions. [2024-06-27 18:20:34,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 243 transitions, 3182 flow [2024-06-27 18:20:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:20:34,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:20:34,046 INFO L175 Difference]: Start difference. First operand has 254 places, 218 transitions, 2580 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:20:34,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 243 transitions, 3182 flow [2024-06-27 18:20:34,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 243 transitions, 3059 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:34,430 INFO L231 Difference]: Finished difference. Result has 256 places, 218 transitions, 2556 flow [2024-06-27 18:20:34,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2556, PETRI_PLACES=256, PETRI_TRANSITIONS=218} [2024-06-27 18:20:34,431 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 216 predicate places. [2024-06-27 18:20:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 218 transitions, 2556 flow [2024-06-27 18:20:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:34,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:34,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:34,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:20:34,432 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:34,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1483625749, now seen corresponding path program 10 times [2024-06-27 18:20:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939106478] [2024-06-27 18:20:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:35,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:35,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939106478] [2024-06-27 18:20:35,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939106478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:35,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:35,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:35,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334887891] [2024-06-27 18:20:35,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:35,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:35,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:35,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:35,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 218 transitions, 2556 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:35,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:35,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:36,174 INFO L124 PetriNetUnfolderBase]: 1655/3766 cut-off events. [2024-06-27 18:20:36,174 INFO L125 PetriNetUnfolderBase]: For 68346/68346 co-relation queries the response was YES. [2024-06-27 18:20:36,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17570 conditions, 3766 events. 1655/3766 cut-off events. For 68346/68346 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 30725 event pairs, 664 based on Foata normal form. 2/3506 useless extension candidates. Maximal degree in co-relation 17465. Up to 2882 conditions per place. [2024-06-27 18:20:36,212 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 207 selfloop transitions, 28 changer transitions 0/244 dead transitions. [2024-06-27 18:20:36,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 244 transitions, 3192 flow [2024-06-27 18:20:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:20:36,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:20:36,213 INFO L175 Difference]: Start difference. First operand has 256 places, 218 transitions, 2556 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:20:36,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 244 transitions, 3192 flow [2024-06-27 18:20:36,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 3100 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:36,506 INFO L231 Difference]: Finished difference. Result has 257 places, 220 transitions, 2594 flow [2024-06-27 18:20:36,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2594, PETRI_PLACES=257, PETRI_TRANSITIONS=220} [2024-06-27 18:20:36,506 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-06-27 18:20:36,506 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 220 transitions, 2594 flow [2024-06-27 18:20:36,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:36,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:36,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:36,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:20:36,507 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:36,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:36,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1489132279, now seen corresponding path program 11 times [2024-06-27 18:20:36,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:36,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766556826] [2024-06-27 18:20:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:36,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:37,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:37,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766556826] [2024-06-27 18:20:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766556826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:37,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:37,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807183999] [2024-06-27 18:20:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:37,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:37,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:37,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 220 transitions, 2594 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:37,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:37,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:37,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:38,264 INFO L124 PetriNetUnfolderBase]: 1672/3803 cut-off events. [2024-06-27 18:20:38,264 INFO L125 PetriNetUnfolderBase]: For 72473/72473 co-relation queries the response was YES. [2024-06-27 18:20:38,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17930 conditions, 3803 events. 1672/3803 cut-off events. For 72473/72473 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 31051 event pairs, 657 based on Foata normal form. 2/3538 useless extension candidates. Maximal degree in co-relation 17824. Up to 2873 conditions per place. [2024-06-27 18:20:38,303 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 194 selfloop transitions, 46 changer transitions 0/249 dead transitions. [2024-06-27 18:20:38,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 249 transitions, 3226 flow [2024-06-27 18:20:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:20:38,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-27 18:20:38,304 INFO L175 Difference]: Start difference. First operand has 257 places, 220 transitions, 2594 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:20:38,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 249 transitions, 3226 flow [2024-06-27 18:20:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 249 transitions, 3139 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:38,640 INFO L231 Difference]: Finished difference. Result has 262 places, 221 transitions, 2641 flow [2024-06-27 18:20:38,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2641, PETRI_PLACES=262, PETRI_TRANSITIONS=221} [2024-06-27 18:20:38,640 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 222 predicate places. [2024-06-27 18:20:38,640 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 221 transitions, 2641 flow [2024-06-27 18:20:38,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:38,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:38,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:38,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:20:38,641 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:38,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash 394375289, now seen corresponding path program 12 times [2024-06-27 18:20:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343563192] [2024-06-27 18:20:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:39,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:39,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343563192] [2024-06-27 18:20:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343563192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:39,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:39,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964724015] [2024-06-27 18:20:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:39,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:39,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 221 transitions, 2641 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:39,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:39,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:39,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:40,615 INFO L124 PetriNetUnfolderBase]: 1689/3854 cut-off events. [2024-06-27 18:20:40,616 INFO L125 PetriNetUnfolderBase]: For 73638/73638 co-relation queries the response was YES. [2024-06-27 18:20:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 3854 events. 1689/3854 cut-off events. For 73638/73638 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 31642 event pairs, 687 based on Foata normal form. 2/3585 useless extension candidates. Maximal degree in co-relation 18015. Up to 2746 conditions per place. [2024-06-27 18:20:40,658 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 150 selfloop transitions, 83 changer transitions 0/242 dead transitions. [2024-06-27 18:20:40,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 242 transitions, 3225 flow [2024-06-27 18:20:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:20:40,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-27 18:20:40,660 INFO L175 Difference]: Start difference. First operand has 262 places, 221 transitions, 2641 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:20:40,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 242 transitions, 3225 flow [2024-06-27 18:20:41,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 242 transitions, 3105 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:41,073 INFO L231 Difference]: Finished difference. Result has 264 places, 222 transitions, 2731 flow [2024-06-27 18:20:41,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2731, PETRI_PLACES=264, PETRI_TRANSITIONS=222} [2024-06-27 18:20:41,073 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-27 18:20:41,074 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 222 transitions, 2731 flow [2024-06-27 18:20:41,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:41,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:41,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:41,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:20:41,074 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:41,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1289478949, now seen corresponding path program 13 times [2024-06-27 18:20:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116639791] [2024-06-27 18:20:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:41,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:42,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116639791] [2024-06-27 18:20:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116639791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:42,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:42,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250741186] [2024-06-27 18:20:42,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:42,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:42,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:42,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:42,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:42,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:42,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 222 transitions, 2731 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:42,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:42,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:43,171 INFO L124 PetriNetUnfolderBase]: 1706/3893 cut-off events. [2024-06-27 18:20:43,171 INFO L125 PetriNetUnfolderBase]: For 76869/76869 co-relation queries the response was YES. [2024-06-27 18:20:43,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18529 conditions, 3893 events. 1706/3893 cut-off events. For 76869/76869 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 32000 event pairs, 700 based on Foata normal form. 2/3622 useless extension candidates. Maximal degree in co-relation 18420. Up to 3002 conditions per place. [2024-06-27 18:20:43,215 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 200 selfloop transitions, 34 changer transitions 0/243 dead transitions. [2024-06-27 18:20:43,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 243 transitions, 3319 flow [2024-06-27 18:20:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:20:43,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:20:43,217 INFO L175 Difference]: Start difference. First operand has 264 places, 222 transitions, 2731 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:20:43,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 243 transitions, 3319 flow [2024-06-27 18:20:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 243 transitions, 3123 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:43,587 INFO L231 Difference]: Finished difference. Result has 266 places, 223 transitions, 2649 flow [2024-06-27 18:20:43,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2649, PETRI_PLACES=266, PETRI_TRANSITIONS=223} [2024-06-27 18:20:43,588 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 226 predicate places. [2024-06-27 18:20:43,588 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 223 transitions, 2649 flow [2024-06-27 18:20:43,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:43,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:43,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:43,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:20:43,589 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:43,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1289686339, now seen corresponding path program 14 times [2024-06-27 18:20:43,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407584853] [2024-06-27 18:20:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:43,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:44,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407584853] [2024-06-27 18:20:44,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407584853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:44,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:44,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:44,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220179591] [2024-06-27 18:20:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:44,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:44,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:44,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 223 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:44,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:44,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:44,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:45,543 INFO L124 PetriNetUnfolderBase]: 1807/4137 cut-off events. [2024-06-27 18:20:45,543 INFO L125 PetriNetUnfolderBase]: For 112617/112617 co-relation queries the response was YES. [2024-06-27 18:20:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20439 conditions, 4137 events. 1807/4137 cut-off events. For 112617/112617 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 34550 event pairs, 740 based on Foata normal form. 2/3855 useless extension candidates. Maximal degree in co-relation 20329. Up to 2960 conditions per place. [2024-06-27 18:20:45,586 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 201 selfloop transitions, 43 changer transitions 0/253 dead transitions. [2024-06-27 18:20:45,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 253 transitions, 3523 flow [2024-06-27 18:20:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:20:45,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 18:20:45,587 INFO L175 Difference]: Start difference. First operand has 266 places, 223 transitions, 2649 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:20:45,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 253 transitions, 3523 flow [2024-06-27 18:20:46,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 253 transitions, 3392 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:46,215 INFO L231 Difference]: Finished difference. Result has 268 places, 225 transitions, 2694 flow [2024-06-27 18:20:46,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2694, PETRI_PLACES=268, PETRI_TRANSITIONS=225} [2024-06-27 18:20:46,216 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 228 predicate places. [2024-06-27 18:20:46,216 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 225 transitions, 2694 flow [2024-06-27 18:20:46,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:46,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:46,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:46,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:20:46,217 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 394167899, now seen corresponding path program 15 times [2024-06-27 18:20:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:46,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524970132] [2024-06-27 18:20:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524970132] [2024-06-27 18:20:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524970132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:47,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198850062] [2024-06-27 18:20:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:47,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:47,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 225 transitions, 2694 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:47,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:47,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:47,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:48,186 INFO L124 PetriNetUnfolderBase]: 1892/4353 cut-off events. [2024-06-27 18:20:48,186 INFO L125 PetriNetUnfolderBase]: For 142162/142162 co-relation queries the response was YES. [2024-06-27 18:20:48,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22163 conditions, 4353 events. 1892/4353 cut-off events. For 142162/142162 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 36893 event pairs, 809 based on Foata normal form. 2/4058 useless extension candidates. Maximal degree in co-relation 22052. Up to 2915 conditions per place. [2024-06-27 18:20:48,229 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 161 selfloop transitions, 85 changer transitions 0/255 dead transitions. [2024-06-27 18:20:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 255 transitions, 3578 flow [2024-06-27 18:20:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:20:48,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 18:20:48,230 INFO L175 Difference]: Start difference. First operand has 268 places, 225 transitions, 2694 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:20:48,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 255 transitions, 3578 flow [2024-06-27 18:20:48,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 255 transitions, 3478 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:48,820 INFO L231 Difference]: Finished difference. Result has 272 places, 227 transitions, 2858 flow [2024-06-27 18:20:48,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2858, PETRI_PLACES=272, PETRI_TRANSITIONS=227} [2024-06-27 18:20:48,821 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2024-06-27 18:20:48,821 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 227 transitions, 2858 flow [2024-06-27 18:20:48,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:48,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:48,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:48,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:20:48,822 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:48,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 638540267, now seen corresponding path program 16 times [2024-06-27 18:20:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820439663] [2024-06-27 18:20:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:49,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820439663] [2024-06-27 18:20:49,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820439663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:49,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:49,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909119276] [2024-06-27 18:20:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:49,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:49,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:49,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:49,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 227 transitions, 2858 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:49,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:49,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:49,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:51,097 INFO L124 PetriNetUnfolderBase]: 1963/4539 cut-off events. [2024-06-27 18:20:51,097 INFO L125 PetriNetUnfolderBase]: For 171273/171273 co-relation queries the response was YES. [2024-06-27 18:20:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23239 conditions, 4539 events. 1963/4539 cut-off events. For 171273/171273 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 38955 event pairs, 857 based on Foata normal form. 10/4237 useless extension candidates. Maximal degree in co-relation 23126. Up to 3162 conditions per place. [2024-06-27 18:20:51,147 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 162 selfloop transitions, 80 changer transitions 0/251 dead transitions. [2024-06-27 18:20:51,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 251 transitions, 3516 flow [2024-06-27 18:20:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:20:51,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-27 18:20:51,149 INFO L175 Difference]: Start difference. First operand has 272 places, 227 transitions, 2858 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:20:51,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 251 transitions, 3516 flow [2024-06-27 18:20:51,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 251 transitions, 3327 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:51,760 INFO L231 Difference]: Finished difference. Result has 276 places, 228 transitions, 2883 flow [2024-06-27 18:20:51,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2883, PETRI_PLACES=276, PETRI_TRANSITIONS=228} [2024-06-27 18:20:51,760 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 236 predicate places. [2024-06-27 18:20:51,761 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 228 transitions, 2883 flow [2024-06-27 18:20:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:51,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:51,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:20:51,761 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:51,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1282329109, now seen corresponding path program 17 times [2024-06-27 18:20:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088522563] [2024-06-27 18:20:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:52,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088522563] [2024-06-27 18:20:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088522563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:52,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:52,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676931714] [2024-06-27 18:20:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:52,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:52,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:52,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:52,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 228 transitions, 2883 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:52,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:52,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:52,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:53,713 INFO L124 PetriNetUnfolderBase]: 1960/4534 cut-off events. [2024-06-27 18:20:53,713 INFO L125 PetriNetUnfolderBase]: For 135527/135527 co-relation queries the response was YES. [2024-06-27 18:20:53,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22756 conditions, 4534 events. 1960/4534 cut-off events. For 135527/135527 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 38895 event pairs, 856 based on Foata normal form. 2/4222 useless extension candidates. Maximal degree in co-relation 22642. Up to 3500 conditions per place. [2024-06-27 18:20:53,768 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 204 selfloop transitions, 35 changer transitions 0/248 dead transitions. [2024-06-27 18:20:53,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 248 transitions, 3441 flow [2024-06-27 18:20:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:20:53,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-27 18:20:53,770 INFO L175 Difference]: Start difference. First operand has 276 places, 228 transitions, 2883 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:20:53,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 248 transitions, 3441 flow [2024-06-27 18:20:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 248 transitions, 3263 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:54,319 INFO L231 Difference]: Finished difference. Result has 277 places, 228 transitions, 2779 flow [2024-06-27 18:20:54,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2779, PETRI_PLACES=277, PETRI_TRANSITIONS=228} [2024-06-27 18:20:54,319 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-27 18:20:54,320 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 228 transitions, 2779 flow [2024-06-27 18:20:54,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:54,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:54,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:20:54,320 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:54,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 650875799, now seen corresponding path program 18 times [2024-06-27 18:20:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:54,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073133011] [2024-06-27 18:20:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:55,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:55,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073133011] [2024-06-27 18:20:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073133011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:55,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176739488] [2024-06-27 18:20:55,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:55,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:55,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:55,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 228 transitions, 2779 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:55,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:55,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:55,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:56,315 INFO L124 PetriNetUnfolderBase]: 1957/4530 cut-off events. [2024-06-27 18:20:56,316 INFO L125 PetriNetUnfolderBase]: For 129264/129264 co-relation queries the response was YES. [2024-06-27 18:20:56,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22272 conditions, 4530 events. 1957/4530 cut-off events. For 129264/129264 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 38917 event pairs, 872 based on Foata normal form. 2/4218 useless extension candidates. Maximal degree in co-relation 22157. Up to 3555 conditions per place. [2024-06-27 18:20:56,372 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 223 selfloop transitions, 16 changer transitions 0/248 dead transitions. [2024-06-27 18:20:56,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 248 transitions, 3337 flow [2024-06-27 18:20:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:20:56,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:20:56,374 INFO L175 Difference]: Start difference. First operand has 277 places, 228 transitions, 2779 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:20:56,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 248 transitions, 3337 flow [2024-06-27 18:20:56,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 248 transitions, 3234 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:56,917 INFO L231 Difference]: Finished difference. Result has 278 places, 228 transitions, 2712 flow [2024-06-27 18:20:56,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2712, PETRI_PLACES=278, PETRI_TRANSITIONS=228} [2024-06-27 18:20:56,918 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 238 predicate places. [2024-06-27 18:20:56,918 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 228 transitions, 2712 flow [2024-06-27 18:20:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:56,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:56,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:56,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:20:56,918 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:56,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash 394383225, now seen corresponding path program 5 times [2024-06-27 18:20:56,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:56,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582987484] [2024-06-27 18:20:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:56,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:58,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:58,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582987484] [2024-06-27 18:20:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582987484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:58,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:20:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427071939] [2024-06-27 18:20:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:20:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:20:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:20:58,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:20:58,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 228 transitions, 2712 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:58,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:58,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:20:58,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:00,246 INFO L124 PetriNetUnfolderBase]: 2011/4681 cut-off events. [2024-06-27 18:21:00,247 INFO L125 PetriNetUnfolderBase]: For 151374/151374 co-relation queries the response was YES. [2024-06-27 18:21:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22672 conditions, 4681 events. 2011/4681 cut-off events. For 151374/151374 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40650 event pairs, 897 based on Foata normal form. 8/4368 useless extension candidates. Maximal degree in co-relation 22556. Up to 3248 conditions per place. [2024-06-27 18:21:00,304 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 162 selfloop transitions, 82 changer transitions 0/253 dead transitions. [2024-06-27 18:21:00,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 253 transitions, 3336 flow [2024-06-27 18:21:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:21:00,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-27 18:21:00,320 INFO L175 Difference]: Start difference. First operand has 278 places, 228 transitions, 2712 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:21:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 253 transitions, 3336 flow [2024-06-27 18:21:01,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 253 transitions, 3271 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:01,050 INFO L231 Difference]: Finished difference. Result has 281 places, 228 transitions, 2816 flow [2024-06-27 18:21:01,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2816, PETRI_PLACES=281, PETRI_TRANSITIONS=228} [2024-06-27 18:21:01,051 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 241 predicate places. [2024-06-27 18:21:01,051 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 228 transitions, 2816 flow [2024-06-27 18:21:01,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:01,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:01,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:01,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:21:01,052 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:01,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash 638816973, now seen corresponding path program 6 times [2024-06-27 18:21:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:01,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015917531] [2024-06-27 18:21:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:01,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015917531] [2024-06-27 18:21:01,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015917531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:01,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:01,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:01,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035282228] [2024-06-27 18:21:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:01,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:01,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:02,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:02,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 228 transitions, 2816 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:02,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:02,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:02,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:03,038 INFO L124 PetriNetUnfolderBase]: 2112/4938 cut-off events. [2024-06-27 18:21:03,038 INFO L125 PetriNetUnfolderBase]: For 173982/173982 co-relation queries the response was YES. [2024-06-27 18:21:03,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24522 conditions, 4938 events. 2112/4938 cut-off events. For 173982/173982 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43615 event pairs, 927 based on Foata normal form. 6/4618 useless extension candidates. Maximal degree in co-relation 24405. Up to 3052 conditions per place. [2024-06-27 18:21:03,092 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 174 selfloop transitions, 75 changer transitions 0/258 dead transitions. [2024-06-27 18:21:03,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 258 transitions, 3664 flow [2024-06-27 18:21:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:21:03,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-06-27 18:21:03,093 INFO L175 Difference]: Start difference. First operand has 281 places, 228 transitions, 2816 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:21:03,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 258 transitions, 3664 flow [2024-06-27 18:21:03,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 258 transitions, 3503 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:03,817 INFO L231 Difference]: Finished difference. Result has 282 places, 228 transitions, 2808 flow [2024-06-27 18:21:03,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2808, PETRI_PLACES=282, PETRI_TRANSITIONS=228} [2024-06-27 18:21:03,818 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 242 predicate places. [2024-06-27 18:21:03,818 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 228 transitions, 2808 flow [2024-06-27 18:21:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:03,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:03,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:03,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:21:03,819 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:03,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1282061703, now seen corresponding path program 7 times [2024-06-27 18:21:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539069416] [2024-06-27 18:21:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:05,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:05,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539069416] [2024-06-27 18:21:05,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539069416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:05,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:05,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991998242] [2024-06-27 18:21:05,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:05,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:05,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:05,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:05,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 228 transitions, 2808 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:05,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:05,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:05,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:06,412 INFO L124 PetriNetUnfolderBase]: 2102/4937 cut-off events. [2024-06-27 18:21:06,412 INFO L125 PetriNetUnfolderBase]: For 159849/159849 co-relation queries the response was YES. [2024-06-27 18:21:06,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23821 conditions, 4937 events. 2102/4937 cut-off events. For 159849/159849 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 43712 event pairs, 977 based on Foata normal form. 8/4607 useless extension candidates. Maximal degree in co-relation 23703. Up to 3632 conditions per place. [2024-06-27 18:21:06,458 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 181 selfloop transitions, 63 changer transitions 0/253 dead transitions. [2024-06-27 18:21:06,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 253 transitions, 3432 flow [2024-06-27 18:21:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:21:06,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-27 18:21:06,459 INFO L175 Difference]: Start difference. First operand has 282 places, 228 transitions, 2808 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:21:06,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 253 transitions, 3432 flow [2024-06-27 18:21:07,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 253 transitions, 3283 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:07,168 INFO L231 Difference]: Finished difference. Result has 285 places, 228 transitions, 2789 flow [2024-06-27 18:21:07,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2789, PETRI_PLACES=285, PETRI_TRANSITIONS=228} [2024-06-27 18:21:07,168 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 245 predicate places. [2024-06-27 18:21:07,168 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 228 transitions, 2789 flow [2024-06-27 18:21:07,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:07,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:07,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:07,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:21:07,169 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:07,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:07,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1282052403, now seen corresponding path program 8 times [2024-06-27 18:21:07,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:07,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208971946] [2024-06-27 18:21:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:08,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:08,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208971946] [2024-06-27 18:21:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208971946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:08,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002615979] [2024-06-27 18:21:08,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:08,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:08,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:08,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 228 transitions, 2789 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:08,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:08,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:08,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:09,370 INFO L124 PetriNetUnfolderBase]: 2139/5023 cut-off events. [2024-06-27 18:21:09,371 INFO L125 PetriNetUnfolderBase]: For 154793/154793 co-relation queries the response was YES. [2024-06-27 18:21:09,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24198 conditions, 5023 events. 2139/5023 cut-off events. For 154793/154793 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44643 event pairs, 958 based on Foata normal form. 6/4698 useless extension candidates. Maximal degree in co-relation 24079. Up to 3270 conditions per place. [2024-06-27 18:21:09,424 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 211 selfloop transitions, 38 changer transitions 0/258 dead transitions. [2024-06-27 18:21:09,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 258 transitions, 3641 flow [2024-06-27 18:21:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:21:09,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 18:21:09,425 INFO L175 Difference]: Start difference. First operand has 285 places, 228 transitions, 2789 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:21:09,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 258 transitions, 3641 flow [2024-06-27 18:21:10,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 258 transitions, 3509 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:10,111 INFO L231 Difference]: Finished difference. Result has 286 places, 228 transitions, 2736 flow [2024-06-27 18:21:10,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2736, PETRI_PLACES=286, PETRI_TRANSITIONS=228} [2024-06-27 18:21:10,112 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 246 predicate places. [2024-06-27 18:21:10,112 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 228 transitions, 2736 flow [2024-06-27 18:21:10,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:10,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:10,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:21:10,113 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:10,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash 401533065, now seen corresponding path program 9 times [2024-06-27 18:21:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307243732] [2024-06-27 18:21:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:11,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307243732] [2024-06-27 18:21:11,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307243732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:11,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:11,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156504056] [2024-06-27 18:21:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:11,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:11,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:11,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 228 transitions, 2736 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:11,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:11,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:11,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:12,746 INFO L124 PetriNetUnfolderBase]: 2193/5186 cut-off events. [2024-06-27 18:21:12,746 INFO L125 PetriNetUnfolderBase]: For 168706/168706 co-relation queries the response was YES. [2024-06-27 18:21:12,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24793 conditions, 5186 events. 2193/5186 cut-off events. For 168706/168706 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 46781 event pairs, 1039 based on Foata normal form. 8/4841 useless extension candidates. Maximal degree in co-relation 24673. Up to 3731 conditions per place. [2024-06-27 18:21:12,806 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 180 selfloop transitions, 64 changer transitions 0/253 dead transitions. [2024-06-27 18:21:12,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 253 transitions, 3360 flow [2024-06-27 18:21:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:21:12,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-27 18:21:12,808 INFO L175 Difference]: Start difference. First operand has 286 places, 228 transitions, 2736 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:21:12,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 253 transitions, 3360 flow [2024-06-27 18:21:13,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 253 transitions, 3285 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:13,537 INFO L231 Difference]: Finished difference. Result has 289 places, 228 transitions, 2794 flow [2024-06-27 18:21:13,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2794, PETRI_PLACES=289, PETRI_TRANSITIONS=228} [2024-06-27 18:21:13,538 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 249 predicate places. [2024-06-27 18:21:13,538 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 228 transitions, 2794 flow [2024-06-27 18:21:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:13,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:13,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:21:13,539 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1282321173, now seen corresponding path program 10 times [2024-06-27 18:21:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502040816] [2024-06-27 18:21:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:14,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:14,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502040816] [2024-06-27 18:21:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502040816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:14,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:14,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018361720] [2024-06-27 18:21:14,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:14,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:14,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:14,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 228 transitions, 2794 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:14,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:14,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:14,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:15,923 INFO L124 PetriNetUnfolderBase]: 2183/5169 cut-off events. [2024-06-27 18:21:15,923 INFO L125 PetriNetUnfolderBase]: For 142853/142853 co-relation queries the response was YES. [2024-06-27 18:21:15,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24131 conditions, 5169 events. 2183/5169 cut-off events. For 142853/142853 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 46615 event pairs, 1021 based on Foata normal form. 8/4825 useless extension candidates. Maximal degree in co-relation 24010. Up to 3704 conditions per place. [2024-06-27 18:21:15,989 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 203 selfloop transitions, 41 changer transitions 0/253 dead transitions. [2024-06-27 18:21:15,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 253 transitions, 3418 flow [2024-06-27 18:21:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:21:15,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 18:21:15,991 INFO L175 Difference]: Start difference. First operand has 289 places, 228 transitions, 2794 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:21:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 253 transitions, 3418 flow [2024-06-27 18:21:16,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 253 transitions, 3287 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:16,750 INFO L231 Difference]: Finished difference. Result has 291 places, 228 transitions, 2753 flow [2024-06-27 18:21:16,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2663, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2753, PETRI_PLACES=291, PETRI_TRANSITIONS=228} [2024-06-27 18:21:16,751 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 251 predicate places. [2024-06-27 18:21:16,751 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 228 transitions, 2753 flow [2024-06-27 18:21:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:16,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:16,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:16,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:21:16,751 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:16,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1289471013, now seen corresponding path program 11 times [2024-06-27 18:21:16,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:16,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075457890] [2024-06-27 18:21:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:16,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:17,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075457890] [2024-06-27 18:21:17,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075457890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:17,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:17,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:17,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514656104] [2024-06-27 18:21:17,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:17,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:17,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:18,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:18,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 228 transitions, 2753 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:18,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:18,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:18,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:19,150 INFO L124 PetriNetUnfolderBase]: 2237/5312 cut-off events. [2024-06-27 18:21:19,151 INFO L125 PetriNetUnfolderBase]: For 146771/146771 co-relation queries the response was YES. [2024-06-27 18:21:19,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24710 conditions, 5312 events. 2237/5312 cut-off events. For 146771/146771 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 48387 event pairs, 1063 based on Foata normal form. 8/4957 useless extension candidates. Maximal degree in co-relation 24588. Up to 3938 conditions per place. [2024-06-27 18:21:19,212 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 209 selfloop transitions, 35 changer transitions 0/253 dead transitions. [2024-06-27 18:21:19,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 253 transitions, 3377 flow [2024-06-27 18:21:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:21:19,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-27 18:21:19,213 INFO L175 Difference]: Start difference. First operand has 291 places, 228 transitions, 2753 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:21:19,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 253 transitions, 3377 flow [2024-06-27 18:21:19,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 253 transitions, 3260 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-27 18:21:19,977 INFO L231 Difference]: Finished difference. Result has 288 places, 228 transitions, 2711 flow [2024-06-27 18:21:19,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2711, PETRI_PLACES=288, PETRI_TRANSITIONS=228} [2024-06-27 18:21:19,977 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-27 18:21:19,977 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 228 transitions, 2711 flow [2024-06-27 18:21:19,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:19,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:19,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:19,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:21:19,978 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:19,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 649694443, now seen corresponding path program 12 times [2024-06-27 18:21:19,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:19,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415927694] [2024-06-27 18:21:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:19,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:21,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:21,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415927694] [2024-06-27 18:21:21,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415927694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:21,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:21,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:21,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26323460] [2024-06-27 18:21:21,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:21,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:21,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:21,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 228 transitions, 2711 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:21,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:21,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:22,149 INFO L124 PetriNetUnfolderBase]: 2291/5464 cut-off events. [2024-06-27 18:21:22,149 INFO L125 PetriNetUnfolderBase]: For 146552/146552 co-relation queries the response was YES. [2024-06-27 18:21:22,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25230 conditions, 5464 events. 2291/5464 cut-off events. For 146552/146552 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 50200 event pairs, 1142 based on Foata normal form. 8/5102 useless extension candidates. Maximal degree in co-relation 25109. Up to 4108 conditions per place. [2024-06-27 18:21:22,215 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 227 selfloop transitions, 17 changer transitions 0/253 dead transitions. [2024-06-27 18:21:22,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 253 transitions, 3335 flow [2024-06-27 18:21:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:21:22,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-27 18:21:22,216 INFO L175 Difference]: Start difference. First operand has 288 places, 228 transitions, 2711 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:21:22,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 253 transitions, 3335 flow [2024-06-27 18:21:23,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 253 transitions, 3268 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:23,038 INFO L231 Difference]: Finished difference. Result has 290 places, 228 transitions, 2683 flow [2024-06-27 18:21:23,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2683, PETRI_PLACES=290, PETRI_TRANSITIONS=228} [2024-06-27 18:21:23,039 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 250 predicate places. [2024-06-27 18:21:23,039 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 228 transitions, 2683 flow [2024-06-27 18:21:23,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:23,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:23,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:23,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:21:23,040 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:23,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash 649963213, now seen corresponding path program 13 times [2024-06-27 18:21:23,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:23,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676318557] [2024-06-27 18:21:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:23,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:24,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:24,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676318557] [2024-06-27 18:21:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676318557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:24,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329199542] [2024-06-27 18:21:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:24,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:24,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:24,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 228 transitions, 2683 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:24,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:24,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:24,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:25,592 INFO L124 PetriNetUnfolderBase]: 2436/5836 cut-off events. [2024-06-27 18:21:25,593 INFO L125 PetriNetUnfolderBase]: For 173203/173203 co-relation queries the response was YES. [2024-06-27 18:21:25,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27384 conditions, 5836 events. 2436/5836 cut-off events. For 173203/173203 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 54598 event pairs, 1211 based on Foata normal form. 6/5455 useless extension candidates. Maximal degree in co-relation 27262. Up to 4179 conditions per place. [2024-06-27 18:21:25,660 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 233 selfloop transitions, 20 changer transitions 0/262 dead transitions. [2024-06-27 18:21:25,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 262 transitions, 3575 flow [2024-06-27 18:21:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:21:25,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-27 18:21:25,661 INFO L175 Difference]: Start difference. First operand has 290 places, 228 transitions, 2683 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:21:25,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 262 transitions, 3575 flow [2024-06-27 18:21:26,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 262 transitions, 3538 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:21:26,422 INFO L231 Difference]: Finished difference. Result has 292 places, 230 transitions, 2720 flow [2024-06-27 18:21:26,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2720, PETRI_PLACES=292, PETRI_TRANSITIONS=230} [2024-06-27 18:21:26,423 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 252 predicate places. [2024-06-27 18:21:26,423 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 230 transitions, 2720 flow [2024-06-27 18:21:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:26,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:26,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:26,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:21:26,423 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:26,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash 649953913, now seen corresponding path program 14 times [2024-06-27 18:21:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212940459] [2024-06-27 18:21:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:26,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212940459] [2024-06-27 18:21:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212940459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:27,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:27,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126883135] [2024-06-27 18:21:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:27,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:27,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 230 transitions, 2720 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:27,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:27,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:27,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:28,795 INFO L124 PetriNetUnfolderBase]: 2416/5820 cut-off events. [2024-06-27 18:21:28,795 INFO L125 PetriNetUnfolderBase]: For 153958/153958 co-relation queries the response was YES. [2024-06-27 18:21:28,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25890 conditions, 5820 events. 2416/5820 cut-off events. For 153958/153958 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 54599 event pairs, 1224 based on Foata normal form. 16/5443 useless extension candidates. Maximal degree in co-relation 25767. Up to 4239 conditions per place. [2024-06-27 18:21:28,861 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 218 selfloop transitions, 26 changer transitions 0/253 dead transitions. [2024-06-27 18:21:28,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 253 transitions, 3336 flow [2024-06-27 18:21:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:21:28,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:21:28,863 INFO L175 Difference]: Start difference. First operand has 292 places, 230 transitions, 2720 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:21:28,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 253 transitions, 3336 flow [2024-06-27 18:21:29,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 253 transitions, 3302 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:29,516 INFO L231 Difference]: Finished difference. Result has 294 places, 230 transitions, 2746 flow [2024-06-27 18:21:29,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2746, PETRI_PLACES=294, PETRI_TRANSITIONS=230} [2024-06-27 18:21:29,517 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2024-06-27 18:21:29,517 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 230 transitions, 2746 flow [2024-06-27 18:21:29,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:29,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:29,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:29,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:21:29,518 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:29,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 974704333, now seen corresponding path program 15 times [2024-06-27 18:21:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:29,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767712083] [2024-06-27 18:21:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767712083] [2024-06-27 18:21:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767712083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:30,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:30,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:30,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938471185] [2024-06-27 18:21:30,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:30,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:30,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:30,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 230 transitions, 2746 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:30,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:30,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:30,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:31,720 INFO L124 PetriNetUnfolderBase]: 2386/5725 cut-off events. [2024-06-27 18:21:31,721 INFO L125 PetriNetUnfolderBase]: For 129989/129989 co-relation queries the response was YES. [2024-06-27 18:21:31,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 5725 events. 2386/5725 cut-off events. For 129989/129989 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 53336 event pairs, 1182 based on Foata normal form. 6/5365 useless extension candidates. Maximal degree in co-relation 25864. Up to 3777 conditions per place. [2024-06-27 18:21:31,791 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 234 selfloop transitions, 23 changer transitions 0/266 dead transitions. [2024-06-27 18:21:31,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 266 transitions, 3648 flow [2024-06-27 18:21:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:21:31,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-27 18:21:31,792 INFO L175 Difference]: Start difference. First operand has 294 places, 230 transitions, 2746 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:21:31,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 266 transitions, 3648 flow [2024-06-27 18:21:32,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 266 transitions, 3596 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:32,525 INFO L231 Difference]: Finished difference. Result has 296 places, 230 transitions, 2743 flow [2024-06-27 18:21:32,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2743, PETRI_PLACES=296, PETRI_TRANSITIONS=230} [2024-06-27 18:21:32,526 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 256 predicate places. [2024-06-27 18:21:32,526 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 230 transitions, 2743 flow [2024-06-27 18:21:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:32,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:32,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:21:32,527 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:32,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash 963662443, now seen corresponding path program 16 times [2024-06-27 18:21:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877785979] [2024-06-27 18:21:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:32,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:33,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:33,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877785979] [2024-06-27 18:21:33,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877785979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:33,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:33,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:33,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981597099] [2024-06-27 18:21:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:33,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:33,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:33,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:33,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:33,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 230 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:33,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:33,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:33,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:34,707 INFO L124 PetriNetUnfolderBase]: 2379/5705 cut-off events. [2024-06-27 18:21:34,707 INFO L125 PetriNetUnfolderBase]: For 109266/109266 co-relation queries the response was YES. [2024-06-27 18:21:34,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25398 conditions, 5705 events. 2379/5705 cut-off events. For 109266/109266 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 53208 event pairs, 1149 based on Foata normal form. 6/5338 useless extension candidates. Maximal degree in co-relation 25273. Up to 3922 conditions per place. [2024-06-27 18:21:34,777 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 227 selfloop transitions, 23 changer transitions 0/259 dead transitions. [2024-06-27 18:21:34,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 259 transitions, 3425 flow [2024-06-27 18:21:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:21:34,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:21:34,779 INFO L175 Difference]: Start difference. First operand has 296 places, 230 transitions, 2743 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:21:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 259 transitions, 3425 flow [2024-06-27 18:21:35,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 259 transitions, 3380 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:35,505 INFO L231 Difference]: Finished difference. Result has 297 places, 230 transitions, 2748 flow [2024-06-27 18:21:35,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2748, PETRI_PLACES=297, PETRI_TRANSITIONS=230} [2024-06-27 18:21:35,505 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 257 predicate places. [2024-06-27 18:21:35,506 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 230 transitions, 2748 flow [2024-06-27 18:21:35,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:35,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:35,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:35,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:21:35,506 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:35,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash -743003660, now seen corresponding path program 1 times [2024-06-27 18:21:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:35,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624012920] [2024-06-27 18:21:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:35,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:36,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:36,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624012920] [2024-06-27 18:21:36,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624012920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:36,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:36,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:36,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108640655] [2024-06-27 18:21:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:36,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:36,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:36,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 230 transitions, 2748 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:36,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:36,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:36,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:37,980 INFO L124 PetriNetUnfolderBase]: 2416/5789 cut-off events. [2024-06-27 18:21:37,980 INFO L125 PetriNetUnfolderBase]: For 111722/111722 co-relation queries the response was YES. [2024-06-27 18:21:38,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25692 conditions, 5789 events. 2416/5789 cut-off events. For 111722/111722 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 53998 event pairs, 1140 based on Foata normal form. 6/5410 useless extension candidates. Maximal degree in co-relation 25566. Up to 4302 conditions per place. [2024-06-27 18:21:38,049 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 233 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-27 18:21:38,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 272 transitions, 3450 flow [2024-06-27 18:21:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:38,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:21:38,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-27 18:21:38,050 INFO L175 Difference]: Start difference. First operand has 297 places, 230 transitions, 2748 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:21:38,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 272 transitions, 3450 flow [2024-06-27 18:21:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 272 transitions, 3403 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:38,979 INFO L231 Difference]: Finished difference. Result has 299 places, 230 transitions, 2764 flow [2024-06-27 18:21:38,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2764, PETRI_PLACES=299, PETRI_TRANSITIONS=230} [2024-06-27 18:21:38,979 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-27 18:21:38,979 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 230 transitions, 2764 flow [2024-06-27 18:21:38,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:38,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:38,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:38,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:21:38,980 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:38,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash 764498108, now seen corresponding path program 2 times [2024-06-27 18:21:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188111929] [2024-06-27 18:21:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:40,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188111929] [2024-06-27 18:21:40,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188111929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:40,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:40,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:40,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165314485] [2024-06-27 18:21:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:40,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:40,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:40,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 230 transitions, 2764 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:40,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:40,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:40,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:42,000 INFO L124 PetriNetUnfolderBase]: 2453/5898 cut-off events. [2024-06-27 18:21:42,000 INFO L125 PetriNetUnfolderBase]: For 112040/112040 co-relation queries the response was YES. [2024-06-27 18:21:42,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26040 conditions, 5898 events. 2453/5898 cut-off events. For 112040/112040 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 55520 event pairs, 1201 based on Foata normal form. 6/5516 useless extension candidates. Maximal degree in co-relation 25914. Up to 4106 conditions per place. [2024-06-27 18:21:42,083 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 183 selfloop transitions, 75 changer transitions 0/267 dead transitions. [2024-06-27 18:21:42,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 267 transitions, 3472 flow [2024-06-27 18:21:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:21:42,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-27 18:21:42,085 INFO L175 Difference]: Start difference. First operand has 299 places, 230 transitions, 2764 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:21:42,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 267 transitions, 3472 flow [2024-06-27 18:21:42,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 267 transitions, 3413 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:42,997 INFO L231 Difference]: Finished difference. Result has 301 places, 230 transitions, 2858 flow [2024-06-27 18:21:42,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2858, PETRI_PLACES=301, PETRI_TRANSITIONS=230} [2024-06-27 18:21:42,997 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 261 predicate places. [2024-06-27 18:21:42,997 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 230 transitions, 2858 flow [2024-06-27 18:21:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:42,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:42,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:21:42,998 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:42,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 992572238, now seen corresponding path program 3 times [2024-06-27 18:21:42,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358880706] [2024-06-27 18:21:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358880706] [2024-06-27 18:21:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358880706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:44,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456940056] [2024-06-27 18:21:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:44,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:44,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:44,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 230 transitions, 2858 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:44,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:44,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:44,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:45,369 INFO L124 PetriNetUnfolderBase]: 2490/6024 cut-off events. [2024-06-27 18:21:45,369 INFO L125 PetriNetUnfolderBase]: For 113724/113724 co-relation queries the response was YES. [2024-06-27 18:21:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26550 conditions, 6024 events. 2490/6024 cut-off events. For 113724/113724 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 57162 event pairs, 1267 based on Foata normal form. 6/5625 useless extension candidates. Maximal degree in co-relation 26423. Up to 4498 conditions per place. [2024-06-27 18:21:45,448 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 208 selfloop transitions, 43 changer transitions 0/260 dead transitions. [2024-06-27 18:21:45,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 260 transitions, 3486 flow [2024-06-27 18:21:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:21:45,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-27 18:21:45,449 INFO L175 Difference]: Start difference. First operand has 301 places, 230 transitions, 2858 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:21:45,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 260 transitions, 3486 flow [2024-06-27 18:21:46,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 260 transitions, 3337 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:46,324 INFO L231 Difference]: Finished difference. Result has 303 places, 230 transitions, 2798 flow [2024-06-27 18:21:46,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2798, PETRI_PLACES=303, PETRI_TRANSITIONS=230} [2024-06-27 18:21:46,325 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-27 18:21:46,325 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 230 transitions, 2798 flow [2024-06-27 18:21:46,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:46,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:46,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:46,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:21:46,326 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:46,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 529890046, now seen corresponding path program 4 times [2024-06-27 18:21:46,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:46,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962991164] [2024-06-27 18:21:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:46,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:47,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962991164] [2024-06-27 18:21:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962991164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:47,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:47,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483288975] [2024-06-27 18:21:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:47,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:47,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:47,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:47,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 230 transitions, 2798 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:47,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:47,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:48,952 INFO L124 PetriNetUnfolderBase]: 2527/6101 cut-off events. [2024-06-27 18:21:48,952 INFO L125 PetriNetUnfolderBase]: For 114536/114536 co-relation queries the response was YES. [2024-06-27 18:21:49,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26702 conditions, 6101 events. 2527/6101 cut-off events. For 114536/114536 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 57965 event pairs, 1279 based on Foata normal form. 6/5705 useless extension candidates. Maximal degree in co-relation 26574. Up to 4571 conditions per place. [2024-06-27 18:21:49,176 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 227 selfloop transitions, 28 changer transitions 0/264 dead transitions. [2024-06-27 18:21:49,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 264 transitions, 3452 flow [2024-06-27 18:21:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:21:49,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-27 18:21:49,177 INFO L175 Difference]: Start difference. First operand has 303 places, 230 transitions, 2798 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:21:49,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 264 transitions, 3452 flow [2024-06-27 18:21:49,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 264 transitions, 3367 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:49,918 INFO L231 Difference]: Finished difference. Result has 305 places, 230 transitions, 2772 flow [2024-06-27 18:21:49,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2772, PETRI_PLACES=305, PETRI_TRANSITIONS=230} [2024-06-27 18:21:49,919 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 265 predicate places. [2024-06-27 18:21:49,919 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 230 transitions, 2772 flow [2024-06-27 18:21:49,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:49,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:49,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:21:49,920 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:49,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1252243098, now seen corresponding path program 5 times [2024-06-27 18:21:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629998278] [2024-06-27 18:21:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:50,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:50,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629998278] [2024-06-27 18:21:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629998278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:50,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393789903] [2024-06-27 18:21:50,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:50,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:51,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:51,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 230 transitions, 2772 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:51,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:51,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:51,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:52,362 INFO L124 PetriNetUnfolderBase]: 2564/6229 cut-off events. [2024-06-27 18:21:52,363 INFO L125 PetriNetUnfolderBase]: For 115892/115892 co-relation queries the response was YES. [2024-06-27 18:21:52,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27010 conditions, 6229 events. 2564/6229 cut-off events. For 115892/115892 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 59588 event pairs, 1337 based on Foata normal form. 6/5820 useless extension candidates. Maximal degree in co-relation 26881. Up to 4516 conditions per place. [2024-06-27 18:21:52,439 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 224 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-06-27 18:21:52,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 260 transitions, 3446 flow [2024-06-27 18:21:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:21:52,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 18:21:52,442 INFO L175 Difference]: Start difference. First operand has 305 places, 230 transitions, 2772 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:21:52,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 260 transitions, 3446 flow [2024-06-27 18:21:53,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 260 transitions, 3391 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:53,180 INFO L231 Difference]: Finished difference. Result has 307 places, 231 transitions, 2793 flow [2024-06-27 18:21:53,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2793, PETRI_PLACES=307, PETRI_TRANSITIONS=231} [2024-06-27 18:21:53,180 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-27 18:21:53,180 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 231 transitions, 2793 flow [2024-06-27 18:21:53,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:53,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:53,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:21:53,181 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:53,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2048536756, now seen corresponding path program 6 times [2024-06-27 18:21:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533450693] [2024-06-27 18:21:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:54,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:54,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533450693] [2024-06-27 18:21:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533450693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361620202] [2024-06-27 18:21:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:54,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:54,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:54,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:54,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:54,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 231 transitions, 2793 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:54,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:54,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:54,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:55,804 INFO L124 PetriNetUnfolderBase]: 2601/6299 cut-off events. [2024-06-27 18:21:55,804 INFO L125 PetriNetUnfolderBase]: For 117194/117194 co-relation queries the response was YES. [2024-06-27 18:21:55,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27285 conditions, 6299 events. 2601/6299 cut-off events. For 117194/117194 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 60289 event pairs, 1356 based on Foata normal form. 6/5891 useless extension candidates. Maximal degree in co-relation 27154. Up to 4692 conditions per place. [2024-06-27 18:21:55,891 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 207 selfloop transitions, 45 changer transitions 0/261 dead transitions. [2024-06-27 18:21:55,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 261 transitions, 3427 flow [2024-06-27 18:21:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:21:55,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-27 18:21:55,893 INFO L175 Difference]: Start difference. First operand has 307 places, 231 transitions, 2793 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:21:55,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 261 transitions, 3427 flow [2024-06-27 18:21:56,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 261 transitions, 3375 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:56,719 INFO L231 Difference]: Finished difference. Result has 309 places, 231 transitions, 2834 flow [2024-06-27 18:21:56,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2834, PETRI_PLACES=309, PETRI_TRANSITIONS=231} [2024-06-27 18:21:56,719 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 269 predicate places. [2024-06-27 18:21:56,719 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 231 transitions, 2834 flow [2024-06-27 18:21:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:56,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:56,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:56,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:21:56,721 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:56,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1325569784, now seen corresponding path program 7 times [2024-06-27 18:21:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737693909] [2024-06-27 18:21:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737693909] [2024-06-27 18:21:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737693909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:58,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:21:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032192233] [2024-06-27 18:21:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:21:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:21:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:21:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:21:58,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 231 transitions, 2834 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:58,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:58,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:21:58,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:59,729 INFO L124 PetriNetUnfolderBase]: 2638/6411 cut-off events. [2024-06-27 18:21:59,730 INFO L125 PetriNetUnfolderBase]: For 117636/117636 co-relation queries the response was YES. [2024-06-27 18:21:59,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27644 conditions, 6411 events. 2638/6411 cut-off events. For 117636/117636 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 61742 event pairs, 1409 based on Foata normal form. 6/5998 useless extension candidates. Maximal degree in co-relation 27513. Up to 4765 conditions per place. [2024-06-27 18:21:59,795 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 218 selfloop transitions, 36 changer transitions 0/263 dead transitions. [2024-06-27 18:21:59,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 263 transitions, 3480 flow [2024-06-27 18:21:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:21:59,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-27 18:21:59,799 INFO L175 Difference]: Start difference. First operand has 309 places, 231 transitions, 2834 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:21:59,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 263 transitions, 3480 flow [2024-06-27 18:22:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 263 transitions, 3391 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:00,649 INFO L231 Difference]: Finished difference. Result has 312 places, 231 transitions, 2820 flow [2024-06-27 18:22:00,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2820, PETRI_PLACES=312, PETRI_TRANSITIONS=231} [2024-06-27 18:22:00,649 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 272 predicate places. [2024-06-27 18:22:00,649 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 231 transitions, 2820 flow [2024-06-27 18:22:00,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:00,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:00,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:22:00,650 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:00,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:00,650 INFO L85 PathProgramCache]: Analyzing trace with hash -665695958, now seen corresponding path program 8 times [2024-06-27 18:22:00,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682178310] [2024-06-27 18:22:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:01,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682178310] [2024-06-27 18:22:01,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682178310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:01,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:01,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:01,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496577989] [2024-06-27 18:22:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:01,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:01,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:22:01,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 231 transitions, 2820 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:01,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:01,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:22:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:03,680 INFO L124 PetriNetUnfolderBase]: 2675/6520 cut-off events. [2024-06-27 18:22:03,681 INFO L125 PetriNetUnfolderBase]: For 119043/119043 co-relation queries the response was YES. [2024-06-27 18:22:03,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27974 conditions, 6520 events. 2675/6520 cut-off events. For 119043/119043 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 63047 event pairs, 1438 based on Foata normal form. 6/6100 useless extension candidates. Maximal degree in co-relation 27842. Up to 4708 conditions per place. [2024-06-27 18:22:03,779 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 187 selfloop transitions, 67 changer transitions 0/263 dead transitions. [2024-06-27 18:22:03,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 263 transitions, 3466 flow [2024-06-27 18:22:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:22:03,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:22:03,780 INFO L175 Difference]: Start difference. First operand has 312 places, 231 transitions, 2820 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:22:03,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 263 transitions, 3466 flow [2024-06-27 18:22:04,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 263 transitions, 3395 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:22:04,773 INFO L231 Difference]: Finished difference. Result has 314 places, 231 transitions, 2886 flow [2024-06-27 18:22:04,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2886, PETRI_PLACES=314, PETRI_TRANSITIONS=231} [2024-06-27 18:22:04,773 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 274 predicate places. [2024-06-27 18:22:04,773 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 231 transitions, 2886 flow [2024-06-27 18:22:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:04,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:04,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:04,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:22:04,774 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:04,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1097495654, now seen corresponding path program 9 times [2024-06-27 18:22:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431315047] [2024-06-27 18:22:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431315047] [2024-06-27 18:22:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431315047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:06,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:06,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065193680] [2024-06-27 18:22:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:22:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:22:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:22:06,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:22:06,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 231 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:06,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:06,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:22:06,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:07,621 INFO L124 PetriNetUnfolderBase]: 2676/6570 cut-off events. [2024-06-27 18:22:07,621 INFO L125 PetriNetUnfolderBase]: For 93235/93235 co-relation queries the response was YES. [2024-06-27 18:22:07,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 6570 events. 2676/6570 cut-off events. For 93235/93235 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 63879 event pairs, 1486 based on Foata normal form. 6/6136 useless extension candidates. Maximal degree in co-relation 27464. Up to 4924 conditions per place. [2024-06-27 18:22:07,713 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 214 selfloop transitions, 35 changer transitions 0/258 dead transitions. [2024-06-27 18:22:07,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 258 transitions, 3308 flow [2024-06-27 18:22:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:07,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:22:07,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:22:07,714 INFO L175 Difference]: Start difference. First operand has 314 places, 231 transitions, 2886 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:22:07,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 258 transitions, 3308 flow [2024-06-27 18:22:08,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 258 transitions, 2917 flow, removed 23 selfloop flow, removed 73 redundant places. [2024-06-27 18:22:08,038 INFO L231 Difference]: Finished difference. Result has 250 places, 230 transitions, 2371 flow [2024-06-27 18:22:08,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2371, PETRI_PLACES=250, PETRI_TRANSITIONS=230} [2024-06-27 18:22:08,038 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2024-06-27 18:22:08,038 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 230 transitions, 2371 flow [2024-06-27 18:22:08,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:08,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:08,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:08,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:22:08,039 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:08,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash 554236198, now seen corresponding path program 1 times [2024-06-27 18:22:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319767125] [2024-06-27 18:22:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319767125] [2024-06-27 18:22:08,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319767125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:08,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:08,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:22:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064385011] [2024-06-27 18:22:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:22:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:22:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:22:08,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-27 18:22:08,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 230 transitions, 2371 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:08,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:08,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-27 18:22:08,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:08,656 INFO L124 PetriNetUnfolderBase]: 1721/4451 cut-off events. [2024-06-27 18:22:08,656 INFO L125 PetriNetUnfolderBase]: For 21483/21489 co-relation queries the response was YES. [2024-06-27 18:22:08,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16601 conditions, 4451 events. 1721/4451 cut-off events. For 21483/21489 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40853 event pairs, 325 based on Foata normal form. 299/4582 useless extension candidates. Maximal degree in co-relation 16533. Up to 1254 conditions per place. [2024-06-27 18:22:08,692 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 117 selfloop transitions, 76 changer transitions 2/234 dead transitions. [2024-06-27 18:22:08,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 234 transitions, 2724 flow [2024-06-27 18:22:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:22:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:22:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 18:22:08,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-27 18:22:08,693 INFO L175 Difference]: Start difference. First operand has 250 places, 230 transitions, 2371 flow. Second operand 5 states and 112 transitions. [2024-06-27 18:22:08,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 234 transitions, 2724 flow [2024-06-27 18:22:08,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 234 transitions, 2410 flow, removed 40 selfloop flow, removed 29 redundant places. [2024-06-27 18:22:08,781 INFO L231 Difference]: Finished difference. Result has 227 places, 224 transitions, 2227 flow [2024-06-27 18:22:08,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2227, PETRI_PLACES=227, PETRI_TRANSITIONS=224} [2024-06-27 18:22:08,782 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 187 predicate places. [2024-06-27 18:22:08,782 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 224 transitions, 2227 flow [2024-06-27 18:22:08,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:08,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:08,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:08,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:22:08,783 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:08,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash -282434416, now seen corresponding path program 1 times [2024-06-27 18:22:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513311487] [2024-06-27 18:22:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:08,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:08,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513311487] [2024-06-27 18:22:08,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513311487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:08,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:08,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:22:08,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635838301] [2024-06-27 18:22:08,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:08,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:22:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:22:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:22:08,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-27 18:22:08,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 224 transitions, 2227 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:08,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:08,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-27 18:22:08,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:09,212 INFO L124 PetriNetUnfolderBase]: 1064/2667 cut-off events. [2024-06-27 18:22:09,212 INFO L125 PetriNetUnfolderBase]: For 7537/7537 co-relation queries the response was YES. [2024-06-27 18:22:09,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8918 conditions, 2667 events. 1064/2667 cut-off events. For 7537/7537 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21404 event pairs, 358 based on Foata normal form. 108/2677 useless extension candidates. Maximal degree in co-relation 8865. Up to 1122 conditions per place. [2024-06-27 18:22:09,226 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 28 selfloop transitions, 3 changer transitions 188/239 dead transitions. [2024-06-27 18:22:09,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 239 transitions, 2577 flow [2024-06-27 18:22:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:22:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:22:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-27 18:22:09,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 18:22:09,227 INFO L175 Difference]: Start difference. First operand has 227 places, 224 transitions, 2227 flow. Second operand 6 states and 126 transitions. [2024-06-27 18:22:09,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 239 transitions, 2577 flow [2024-06-27 18:22:09,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 2048 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-27 18:22:09,263 INFO L231 Difference]: Finished difference. Result has 223 places, 49 transitions, 299 flow [2024-06-27 18:22:09,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=223, PETRI_TRANSITIONS=49} [2024-06-27 18:22:09,263 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 183 predicate places. [2024-06-27 18:22:09,263 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 49 transitions, 299 flow [2024-06-27 18:22:09,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:09,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:09,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:22:09,264 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:09,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -118741448, now seen corresponding path program 2 times [2024-06-27 18:22:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866228206] [2024-06-27 18:22:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:09,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866228206] [2024-06-27 18:22:09,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866228206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:09,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:22:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061579097] [2024-06-27 18:22:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:09,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-27 18:22:09,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 49 transitions, 299 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:09,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:09,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-27 18:22:09,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:10,044 INFO L124 PetriNetUnfolderBase]: 144/392 cut-off events. [2024-06-27 18:22:10,045 INFO L125 PetriNetUnfolderBase]: For 245/245 co-relation queries the response was YES. [2024-06-27 18:22:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 392 events. 144/392 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1936 event pairs, 18 based on Foata normal form. 16/394 useless extension candidates. Maximal degree in co-relation 1003. Up to 100 conditions per place. [2024-06-27 18:22:10,046 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 18 selfloop transitions, 7 changer transitions 29/68 dead transitions. [2024-06-27 18:22:10,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 68 transitions, 431 flow [2024-06-27 18:22:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:22:10,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 18:22:10,047 INFO L175 Difference]: Start difference. First operand has 223 places, 49 transitions, 299 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:22:10,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 68 transitions, 431 flow [2024-06-27 18:22:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 68 transitions, 333 flow, removed 13 selfloop flow, removed 29 redundant places. [2024-06-27 18:22:10,049 INFO L231 Difference]: Finished difference. Result has 92 places, 33 transitions, 129 flow [2024-06-27 18:22:10,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=129, PETRI_PLACES=92, PETRI_TRANSITIONS=33} [2024-06-27 18:22:10,050 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-06-27 18:22:10,050 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 33 transitions, 129 flow [2024-06-27 18:22:10,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:10,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:10,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:22:10,050 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:10,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash -199356246, now seen corresponding path program 3 times [2024-06-27 18:22:10,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:10,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317792896] [2024-06-27 18:22:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:22:10,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 18:22:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:22:10,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 18:22:10,102 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 18:22:10,103 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 18:22:10,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 18:22:10,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 18:22:10,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-27 18:22:10,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 18:22:10,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 18:22:10,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 18:22:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:22:10,108 INFO L445 BasicCegarLoop]: Path program histogram: [18, 16, 10, 9, 8, 7, 6, 6, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:10,113 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:22:10,113 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:22:10,178 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:22:10,178 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:22:10,179 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:22:10 BasicIcfg [2024-06-27 18:22:10,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:22:10,180 INFO L158 Benchmark]: Toolchain (without parser) took 209228.67ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 80.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2024-06-27 18:22:10,180 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 78.6MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:22:10,180 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:22:10,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.43ms. Allocated memory was 142.6MB in the beginning and 222.3MB in the end (delta: 79.7MB). Free memory was 80.1MB in the beginning and 172.3MB in the end (delta: -92.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2024-06-27 18:22:10,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.71ms. Allocated memory is still 222.3MB. Free memory was 172.3MB in the beginning and 169.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:22:10,181 INFO L158 Benchmark]: Boogie Preprocessor took 83.38ms. Allocated memory is still 222.3MB. Free memory was 169.8MB in the beginning and 166.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:22:10,181 INFO L158 Benchmark]: RCFGBuilder took 659.97ms. Allocated memory is still 222.3MB. Free memory was 166.0MB in the beginning and 186.3MB in the end (delta: -20.3MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2024-06-27 18:22:10,181 INFO L158 Benchmark]: TraceAbstraction took 207702.75ms. Allocated memory was 222.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 185.6MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2024-06-27 18:22:10,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 78.6MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.43ms. Allocated memory was 142.6MB in the beginning and 222.3MB in the end (delta: 79.7MB). Free memory was 80.1MB in the beginning and 172.3MB in the end (delta: -92.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.71ms. Allocated memory is still 222.3MB. Free memory was 172.3MB in the beginning and 169.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.38ms. Allocated memory is still 222.3MB. Free memory was 169.8MB in the beginning and 166.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 659.97ms. Allocated memory is still 222.3MB. Free memory was 166.0MB in the beginning and 186.3MB in the end (delta: -20.3MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * TraceAbstraction took 207702.75ms. Allocated memory was 222.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 185.6MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff1_thd0; [L726] 0 _Bool x$r_buff1_thd1; [L727] 0 _Bool x$r_buff1_thd2; [L728] 0 _Bool x$read_delayed; [L729] 0 int *x$read_delayed_var; [L730] 0 int x$w_buff0; [L731] 0 _Bool x$w_buff0_used; [L732] 0 int x$w_buff1; [L733] 0 _Bool x$w_buff1_used; [L735] 0 int y = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L821] 0 pthread_t t311; [L822] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L822] FCALL, FORK 0 pthread_create(&t311, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L823] 0 pthread_t t312; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L824] 0 //@ assert ((((((((((((((((!multithreaded || (0 <= __unbuffered_cnt)) && (!multithreaded || (x$flush_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || ((x$mem_tmp == 0) || (x$mem_tmp == 1)))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 1)))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 1)))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))); [L824] FCALL, FORK 0 pthread_create(&t312, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L825] 0 //@ assert ((((((((((((((((!multithreaded || (0 <= __unbuffered_cnt)) && (!multithreaded || (x$flush_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || ((x$mem_tmp == 0) || (x$mem_tmp == 1)))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 1)))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 1)))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L769] 2 x$w_buff1 = x$w_buff0 [L770] 2 x$w_buff0 = 1 [L771] 2 x$w_buff1_used = x$w_buff0_used [L772] 2 x$w_buff0_used = (_Bool)1 [L773] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L773] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L774] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L775] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L776] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L777] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L780] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L781] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L782] 2 x$flush_delayed = weak$$choice2 [L783] 2 x$mem_tmp = x [L784] 2 x = !x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff1) [L785] 2 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff0)) [L786] 2 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff1 : x$w_buff1)) [L787] 2 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used)) [L788] 2 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L789] 2 x$r_buff0_thd2 = weak$$choice2 ? x$r_buff0_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff0_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2)) [L790] 2 x$r_buff1_thd2 = weak$$choice2 ? x$r_buff1_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff1_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L791] 2 __unbuffered_p1_EAX = x [L792] 2 x = x$flush_delayed ? x$mem_tmp : x [L793] 2 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L796] 2 __unbuffered_p1_EBX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L741] 1 y = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L744] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L745] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L746] 1 x$flush_delayed = weak$$choice2 [L747] 1 x$mem_tmp = x [L748] 1 x = !x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff1) [L749] 1 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff0)) [L750] 1 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff1 : x$w_buff1)) [L751] 1 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used)) [L752] 1 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L753] 1 x$r_buff0_thd1 = weak$$choice2 ? x$r_buff0_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff0_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1)) [L754] 1 x$r_buff1_thd1 = weak$$choice2 ? x$r_buff1_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff1_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L755] 1 __unbuffered_p0_EAX = x [L756] 1 x = x$flush_delayed ? x$mem_tmp : x [L757] 1 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L799] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L800] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L801] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L802] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L803] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L762] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L806] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L826] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L828] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L828] RET 0 assume_abort_if_not(main$tmp_guard0) [L830] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L831] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L832] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L833] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L834] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L837] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311=-1, t312=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L839] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 822]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 7 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: 207.5s, OverallIterations: 111, TraceHistogramMax: 1, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 111.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7004 SdHoareTripleChecker+Valid, 30.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6026 mSDsluCounter, 3356 SdHoareTripleChecker+Invalid, 25.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3003 mSDsCounter, 1210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47572 IncrementalHoareTripleChecker+Invalid, 48782 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1210 mSolverCounterUnsat, 353 mSDtfsCounter, 47572 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1136 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 1114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1925 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2886occurred in iteration=106, InterpolantAutomatonStates: 995, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 94.2s InterpolantComputationTime, 1753 NumberOfCodeBlocks, 1753 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 1617 ConstructedInterpolants, 0 QuantifiedInterpolants, 71815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 110 InterpolantComputations, 110 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 RESULT: Ultimate proved your program to be incorrect! [2024-06-27 18:22:10,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE