./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_pso.oepc_pso.opt_tso.oepc_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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_pso.oepc_pso.opt_tso.oepc_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 21:50:29,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:50:29,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:50:29,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:50:29,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:50:29,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:50:29,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:50:29,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:50:29,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:50:29,570 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:50:29,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:50:29,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:50:29,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:50:29,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:50:29,572 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:50:29,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:50:29,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:50:29,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:50:29,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:50:29,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:50:29,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:50:29,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:50:29,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:50:29,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:50:29,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:50:29,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:50:29,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:50:29,575 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:50:29,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:50:29,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:50:29,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:50:29,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:50:29,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:50:29,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:50:29,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:50:29,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:50:29,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:50:29,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:50:29,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:50:29,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:50:29,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:50:29,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:50:29,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:50:29,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:50:29,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:50:29,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:50:29,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:50:29,813 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:50:29,813 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:50:29,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:30,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:50:31,028 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:50:31,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:31,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6e0890c/c5c7db56845447e8a8346be7670f4c35/FLAG5f0823085 [2024-06-27 21:50:31,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6e0890c/c5c7db56845447e8a8346be7670f4c35 [2024-06-27 21:50:31,063 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:50:31,063 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:50:31,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 21:50:31,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:50:31,148 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:50:31,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:50:31,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:50:31,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:50:31,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:50:31" (1/2) ... [2024-06-27 21:50:31,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc64c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:50:31, skipping insertion in model container [2024-06-27 21:50:31,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:50:31" (1/2) ... [2024-06-27 21:50:31,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57a65c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:50:31, skipping insertion in model container [2024-06-27 21:50:31,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:31" (2/2) ... [2024-06-27 21:50:31,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc64c80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:31, skipping insertion in model container [2024-06-27 21:50:31,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:31" (2/2) ... [2024-06-27 21:50:31,158 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:50:31,195 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:50:31,196 INFO L97 edCorrectnessWitness]: Location invariant before [L784-L784] ! multithreaded || (0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL [2024-06-27 21:50:31,196 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] ! multithreaded || (0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL [2024-06-27 21:50:31,197 INFO L97 edCorrectnessWitness]: Location invariant before [L783-L783] ! multithreaded || (0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL [2024-06-27 21:50:31,197 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:50:31,197 INFO L106 edCorrectnessWitness]: ghost_update [L779-L779] multithreaded = 1; [2024-06-27 21:50:31,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:50:31,387 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-06-27 21:50:31,531 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:50:31,540 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:50:31,569 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:50:31,617 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:50:31,648 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:50:31,649 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:31 WrapperNode [2024-06-27 21:50:31,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:50:31,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:50:31,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:50:31,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:50:31,655 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,679 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,699 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-06-27 21:50:31,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:50:31,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:50:31,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:50:31,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:50:31,709 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,710 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,714 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,734 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 21:50:31,734 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,734 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,744 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,746 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,749 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,750 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:50:31,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:50:31,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:50:31,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:50:31,756 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 09:50:31" (1/1) ... [2024-06-27 21:50:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:50:31,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:50:31,779 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 21:50:31,794 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 21:50:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:50:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:50:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:50:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:50:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:50:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:50:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:50:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:50:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:50:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:50:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:50:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:50:31,809 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 21:50:31,914 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:50:31,916 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:50:32,090 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:50:32,090 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:50:32,159 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:50:32,159 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:50:32,160 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:50:32 BoogieIcfgContainer [2024-06-27 21:50:32,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:50:32,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:50:32,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:50:32,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:50:32,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:50:31" (1/4) ... [2024-06-27 21:50:32,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74469b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:50:32, skipping insertion in model container [2024-06-27 21:50:32,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:31" (2/4) ... [2024-06-27 21:50:32,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74469b00 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:50:32, skipping insertion in model container [2024-06-27 21:50:32,166 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 09:50:31" (3/4) ... [2024-06-27 21:50:32,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74469b00 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:50:32, skipping insertion in model container [2024-06-27 21:50:32,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:50:32" (4/4) ... [2024-06-27 21:50:32,169 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:32,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:50:32,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:50:32,182 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:50:32,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:50:32,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 21:50:32,265 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-27 21:50:32,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:50:32,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-27 21:50:32,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 21:50:32,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 39 transitions, 87 flow [2024-06-27 21:50:32,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:50:32,287 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;@1de8e0eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:50:32,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:50:32,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:50:32,293 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:50:32,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:50:32,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:32,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:50:32,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:32,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 210327718, now seen corresponding path program 1 times [2024-06-27 21:50:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007382438] [2024-06-27 21:50:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:32,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007382438] [2024-06-27 21:50:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007382438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:32,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:50:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760360934] [2024-06-27 21:50:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:32,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:50:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:32,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:50:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:50:32,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 45 [2024-06-27 21:50:32,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:32,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:32,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 45 [2024-06-27 21:50:32,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:32,707 INFO L124 PetriNetUnfolderBase]: 206/546 cut-off events. [2024-06-27 21:50:32,707 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 21:50:32,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 546 events. 206/546 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3621 event pairs, 100 based on Foata normal form. 14/529 useless extension candidates. Maximal degree in co-relation 917. Up to 206 conditions per place. [2024-06-27 21:50:32,712 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 21 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 21:50:32,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 145 flow [2024-06-27 21:50:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:50:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:50:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 21:50:32,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 21:50:32,723 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 87 flow. Second operand 3 states and 99 transitions. [2024-06-27 21:50:32,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 145 flow [2024-06-27 21:50:32,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:32,726 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 98 flow [2024-06-27 21:50:32,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-27 21:50:32,730 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-06-27 21:50:32,730 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 98 flow [2024-06-27 21:50:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:32,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:32,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:32,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:50:32,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:32,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash -337261788, now seen corresponding path program 1 times [2024-06-27 21:50:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518082281] [2024-06-27 21:50:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:32,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:32,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518082281] [2024-06-27 21:50:32,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518082281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:32,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:32,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:50:32,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601841934] [2024-06-27 21:50:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:32,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:50:32,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:50:32,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:50:32,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 45 [2024-06-27 21:50:32,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 21:50:32,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:32,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 45 [2024-06-27 21:50:32,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:32,916 INFO L124 PetriNetUnfolderBase]: 194/481 cut-off events. [2024-06-27 21:50:32,916 INFO L125 PetriNetUnfolderBase]: For 119/122 co-relation queries the response was YES. [2024-06-27 21:50:32,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 481 events. 194/481 cut-off events. For 119/122 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2698 event pairs, 99 based on Foata normal form. 4/474 useless extension candidates. Maximal degree in co-relation 933. Up to 275 conditions per place. [2024-06-27 21:50:32,924 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 30 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-06-27 21:50:32,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 206 flow [2024-06-27 21:50:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-27 21:50:32,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7277777777777777 [2024-06-27 21:50:32,927 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 98 flow. Second operand 4 states and 131 transitions. [2024-06-27 21:50:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 206 flow [2024-06-27 21:50:32,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:50:32,929 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 113 flow [2024-06-27 21:50:32,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 21:50:32,930 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-06-27 21:50:32,930 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 113 flow [2024-06-27 21:50:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 21:50:32,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:32,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:32,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:50:32,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:32,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:32,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1954280037, now seen corresponding path program 1 times [2024-06-27 21:50:32,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:32,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064154260] [2024-06-27 21:50:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:32,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:32,996 INFO 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 21:50:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064154260] [2024-06-27 21:50:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064154260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:32,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:32,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948104813] [2024-06-27 21:50:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:32,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:32,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:33,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 45 [2024-06-27 21:50:33,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 21:50:33,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:33,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 45 [2024-06-27 21:50:33,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:33,074 INFO L124 PetriNetUnfolderBase]: 182/478 cut-off events. [2024-06-27 21:50:33,075 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-06-27 21:50:33,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 478 events. 182/478 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2992 event pairs, 50 based on Foata normal form. 8/465 useless extension candidates. Maximal degree in co-relation 960. Up to 124 conditions per place. [2024-06-27 21:50:33,098 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 25 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-06-27 21:50:33,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 187 flow [2024-06-27 21:50:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 21:50:33,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-27 21:50:33,104 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 113 flow. Second operand 4 states and 125 transitions. [2024-06-27 21:50:33,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 187 flow [2024-06-27 21:50:33,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 176 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:33,132 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 104 flow [2024-06-27 21:50:33,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-27 21:50:33,132 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-06-27 21:50:33,132 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 104 flow [2024-06-27 21:50:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 21:50:33,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:33,133 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 21:50:33,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:50:33,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:33,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:33,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1220229186, now seen corresponding path program 1 times [2024-06-27 21:50:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868735050] [2024-06-27 21:50:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:33,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868735050] [2024-06-27 21:50:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868735050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:33,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:33,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468836425] [2024-06-27 21:50:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:33,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:33,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:33,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:50:33,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 21:50:33,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:33,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:50:33,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:33,637 INFO L124 PetriNetUnfolderBase]: 1638/3294 cut-off events. [2024-06-27 21:50:33,638 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2024-06-27 21:50:33,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6310 conditions, 3294 events. 1638/3294 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 25777 event pairs, 527 based on Foata normal form. 107/3291 useless extension candidates. Maximal degree in co-relation 6296. Up to 1107 conditions per place. [2024-06-27 21:50:33,653 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 34 selfloop transitions, 7 changer transitions 39/96 dead transitions. [2024-06-27 21:50:33,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 414 flow [2024-06-27 21:50:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-27 21:50:33,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.707936507936508 [2024-06-27 21:50:33,655 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 104 flow. Second operand 7 states and 223 transitions. [2024-06-27 21:50:33,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 414 flow [2024-06-27 21:50:33,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 96 transitions, 387 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:33,659 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 181 flow [2024-06-27 21:50:33,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-06-27 21:50:33,660 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2024-06-27 21:50:33,660 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 181 flow [2024-06-27 21:50:33,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 21:50:33,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:33,661 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 21:50:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:50:33,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:33,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 771974783, now seen corresponding path program 1 times [2024-06-27 21:50:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:33,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637687660] [2024-06-27 21:50:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:33,812 INFO 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 21:50:33,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:33,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637687660] [2024-06-27 21:50:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637687660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:33,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:33,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41168364] [2024-06-27 21:50:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:33,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:50:33,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:50:33,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:33,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:50:33,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:34,138 INFO L124 PetriNetUnfolderBase]: 1149/2280 cut-off events. [2024-06-27 21:50:34,139 INFO L125 PetriNetUnfolderBase]: For 3129/3143 co-relation queries the response was YES. [2024-06-27 21:50:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6417 conditions, 2280 events. 1149/2280 cut-off events. For 3129/3143 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15909 event pairs, 259 based on Foata normal form. 68/2300 useless extension candidates. Maximal degree in co-relation 6398. Up to 694 conditions per place. [2024-06-27 21:50:34,149 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 39 selfloop transitions, 8 changer transitions 54/117 dead transitions. [2024-06-27 21:50:34,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 117 transitions, 781 flow [2024-06-27 21:50:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:50:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:50:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-06-27 21:50:34,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-06-27 21:50:34,151 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 181 flow. Second operand 10 states and 297 transitions. [2024-06-27 21:50:34,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 117 transitions, 781 flow [2024-06-27 21:50:34,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 117 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:50:34,160 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 251 flow [2024-06-27 21:50:34,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-06-27 21:50:34,161 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2024-06-27 21:50:34,166 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 251 flow [2024-06-27 21:50:34,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:50:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:34,166 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 21:50:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:50:34,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1730390657, now seen corresponding path program 1 times [2024-06-27 21:50:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434007947] [2024-06-27 21:50:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:34,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:34,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434007947] [2024-06-27 21:50:34,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434007947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:34,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:34,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:34,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721656139] [2024-06-27 21:50:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:34,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:34,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:50:34,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:50:34,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:34,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:50:34,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:34,555 INFO L124 PetriNetUnfolderBase]: 903/1821 cut-off events. [2024-06-27 21:50:34,555 INFO L125 PetriNetUnfolderBase]: For 5394/5397 co-relation queries the response was YES. [2024-06-27 21:50:34,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5967 conditions, 1821 events. 903/1821 cut-off events. For 5394/5397 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12106 event pairs, 212 based on Foata normal form. 61/1843 useless extension candidates. Maximal degree in co-relation 5939. Up to 569 conditions per place. [2024-06-27 21:50:34,567 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 49 selfloop transitions, 13 changer transitions 46/124 dead transitions. [2024-06-27 21:50:34,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 124 transitions, 897 flow [2024-06-27 21:50:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:50:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:50:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-06-27 21:50:34,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711111111111111 [2024-06-27 21:50:34,569 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 251 flow. Second operand 10 states and 302 transitions. [2024-06-27 21:50:34,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 124 transitions, 897 flow [2024-06-27 21:50:34,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 850 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:34,580 INFO L231 Difference]: Finished difference. Result has 79 places, 52 transitions, 351 flow [2024-06-27 21:50:34,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=52} [2024-06-27 21:50:34,583 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 30 predicate places. [2024-06-27 21:50:34,583 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 52 transitions, 351 flow [2024-06-27 21:50:34,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:50:34,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:34,583 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] [2024-06-27 21:50:34,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:50:34,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:34,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1427334006, now seen corresponding path program 1 times [2024-06-27 21:50:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:34,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261969482] [2024-06-27 21:50:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:34,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:34,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261969482] [2024-06-27 21:50:34,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261969482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:34,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:34,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628576034] [2024-06-27 21:50:34,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:34,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:34,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:50:34,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 52 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 21:50:34,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:50:34,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:34,968 INFO L124 PetriNetUnfolderBase]: 835/1721 cut-off events. [2024-06-27 21:50:34,968 INFO L125 PetriNetUnfolderBase]: For 6772/6774 co-relation queries the response was YES. [2024-06-27 21:50:34,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 1721 events. 835/1721 cut-off events. For 6772/6774 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11562 event pairs, 163 based on Foata normal form. 52/1729 useless extension candidates. Maximal degree in co-relation 5983. Up to 544 conditions per place. [2024-06-27 21:50:34,980 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 45 selfloop transitions, 16 changer transitions 32/109 dead transitions. [2024-06-27 21:50:34,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 895 flow [2024-06-27 21:50:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:50:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:50:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 288 transitions. [2024-06-27 21:50:34,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-27 21:50:34,982 INFO L175 Difference]: Start difference. First operand has 79 places, 52 transitions, 351 flow. Second operand 10 states and 288 transitions. [2024-06-27 21:50:34,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 895 flow [2024-06-27 21:50:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 816 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 21:50:34,998 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 458 flow [2024-06-27 21:50:34,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2024-06-27 21:50:34,999 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 34 predicate places. [2024-06-27 21:50:34,999 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 458 flow [2024-06-27 21:50:34,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 21:50:34,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:34,999 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] [2024-06-27 21:50:35,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:50:35,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:35,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash 550574205, now seen corresponding path program 1 times [2024-06-27 21:50:35,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:35,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636079990] [2024-06-27 21:50:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:35,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636079990] [2024-06-27 21:50:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636079990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:35,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:35,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822553213] [2024-06-27 21:50:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:35,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:35,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:35,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:35,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:50:35,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 21:50:35,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:35,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:50:35,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:35,331 INFO L124 PetriNetUnfolderBase]: 671/1441 cut-off events. [2024-06-27 21:50:35,331 INFO L125 PetriNetUnfolderBase]: For 5812/5812 co-relation queries the response was YES. [2024-06-27 21:50:35,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5234 conditions, 1441 events. 671/1441 cut-off events. For 5812/5812 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9758 event pairs, 122 based on Foata normal form. 30/1428 useless extension candidates. Maximal degree in co-relation 5195. Up to 469 conditions per place. [2024-06-27 21:50:35,341 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 49 selfloop transitions, 18 changer transitions 28/111 dead transitions. [2024-06-27 21:50:35,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 111 transitions, 985 flow [2024-06-27 21:50:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:50:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:50:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 286 transitions. [2024-06-27 21:50:35,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355555555555555 [2024-06-27 21:50:35,343 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 458 flow. Second operand 10 states and 286 transitions. [2024-06-27 21:50:35,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 111 transitions, 985 flow [2024-06-27 21:50:35,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 916 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 21:50:35,353 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 570 flow [2024-06-27 21:50:35,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=570, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2024-06-27 21:50:35,354 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 38 predicate places. [2024-06-27 21:50:35,354 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 570 flow [2024-06-27 21:50:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 21:50:35,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:35,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:50:35,355 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:35,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1961656039, now seen corresponding path program 1 times [2024-06-27 21:50:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121955158] [2024-06-27 21:50:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:35,466 INFO 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 21:50:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:35,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121955158] [2024-06-27 21:50:35,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121955158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:35,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:35,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255957333] [2024-06-27 21:50:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:35,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:35,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-27 21:50:35,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:50:35,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:35,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-27 21:50:35,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:35,653 INFO L124 PetriNetUnfolderBase]: 579/1351 cut-off events. [2024-06-27 21:50:35,654 INFO L125 PetriNetUnfolderBase]: For 4644/4890 co-relation queries the response was YES. [2024-06-27 21:50:35,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 1351 events. 579/1351 cut-off events. For 4644/4890 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9965 event pairs, 125 based on Foata normal form. 60/1317 useless extension candidates. Maximal degree in co-relation 4316. Up to 284 conditions per place. [2024-06-27 21:50:35,660 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 22 selfloop transitions, 4 changer transitions 31/85 dead transitions. [2024-06-27 21:50:35,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 758 flow [2024-06-27 21:50:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:50:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:50:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 21:50:35,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-27 21:50:35,663 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 570 flow. Second operand 8 states and 214 transitions. [2024-06-27 21:50:35,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 758 flow [2024-06-27 21:50:35,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 707 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 21:50:35,671 INFO L231 Difference]: Finished difference. Result has 85 places, 47 transitions, 358 flow [2024-06-27 21:50:35,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=85, PETRI_TRANSITIONS=47} [2024-06-27 21:50:35,672 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 36 predicate places. [2024-06-27 21:50:35,672 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 47 transitions, 358 flow [2024-06-27 21:50:35,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:50:35,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:35,673 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 21:50:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:50:35,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:35,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2135445699, now seen corresponding path program 1 times [2024-06-27 21:50:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84964234] [2024-06-27 21:50:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:35,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:35,729 INFO 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 21:50:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84964234] [2024-06-27 21:50:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84964234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:35,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182981568] [2024-06-27 21:50:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:35,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:50:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:35,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:50:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:50:35,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:50:35,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 47 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:35,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:35,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:50:35,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:35,833 INFO L124 PetriNetUnfolderBase]: 594/1216 cut-off events. [2024-06-27 21:50:35,833 INFO L125 PetriNetUnfolderBase]: For 1403/1428 co-relation queries the response was YES. [2024-06-27 21:50:35,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 1216 events. 594/1216 cut-off events. For 1403/1428 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7694 event pairs, 130 based on Foata normal form. 63/1233 useless extension candidates. Maximal degree in co-relation 2850. Up to 528 conditions per place. [2024-06-27 21:50:35,840 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 27 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-27 21:50:35,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 61 transitions, 452 flow [2024-06-27 21:50:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 21:50:35,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2024-06-27 21:50:35,841 INFO L175 Difference]: Start difference. First operand has 85 places, 47 transitions, 358 flow. Second operand 4 states and 134 transitions. [2024-06-27 21:50:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 61 transitions, 452 flow [2024-06-27 21:50:35,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 384 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-27 21:50:35,848 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 328 flow [2024-06-27 21:50:35,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2024-06-27 21:50:35,850 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-06-27 21:50:35,850 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 328 flow [2024-06-27 21:50:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:35,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:35,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:35,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:50:35,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:35,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash -258029782, now seen corresponding path program 1 times [2024-06-27 21:50:35,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:35,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455253673] [2024-06-27 21:50:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:35,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455253673] [2024-06-27 21:50:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455253673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:35,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:35,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063173950] [2024-06-27 21:50:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:35,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:35,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:35,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:35,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:50:35,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 21:50:35,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:35,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:50:35,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:36,037 INFO L124 PetriNetUnfolderBase]: 506/1023 cut-off events. [2024-06-27 21:50:36,037 INFO L125 PetriNetUnfolderBase]: For 767/1047 co-relation queries the response was YES. [2024-06-27 21:50:36,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 1023 events. 506/1023 cut-off events. For 767/1047 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6048 event pairs, 47 based on Foata normal form. 62/1040 useless extension candidates. Maximal degree in co-relation 2612. Up to 424 conditions per place. [2024-06-27 21:50:36,042 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 32 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2024-06-27 21:50:36,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 461 flow [2024-06-27 21:50:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-06-27 21:50:36,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7422222222222222 [2024-06-27 21:50:36,044 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 328 flow. Second operand 5 states and 167 transitions. [2024-06-27 21:50:36,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 461 flow [2024-06-27 21:50:36,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:50:36,046 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 380 flow [2024-06-27 21:50:36,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-06-27 21:50:36,047 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 24 predicate places. [2024-06-27 21:50:36,047 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 380 flow [2024-06-27 21:50:36,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 21:50:36,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:36,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:36,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:50:36,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:36,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash -843942267, now seen corresponding path program 1 times [2024-06-27 21:50:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775796373] [2024-06-27 21:50:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:36,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775796373] [2024-06-27 21:50:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775796373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:36,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247512900] [2024-06-27 21:50:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:36,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:36,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2024-06-27 21:50:36,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 21:50:36,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:36,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2024-06-27 21:50:36,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:36,225 INFO L124 PetriNetUnfolderBase]: 414/795 cut-off events. [2024-06-27 21:50:36,226 INFO L125 PetriNetUnfolderBase]: For 1349/1926 co-relation queries the response was YES. [2024-06-27 21:50:36,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 795 events. 414/795 cut-off events. For 1349/1926 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4205 event pairs, 19 based on Foata normal form. 56/810 useless extension candidates. Maximal degree in co-relation 2472. Up to 264 conditions per place. [2024-06-27 21:50:36,230 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 27 selfloop transitions, 11 changer transitions 7/71 dead transitions. [2024-06-27 21:50:36,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 503 flow [2024-06-27 21:50:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-27 21:50:36,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2024-06-27 21:50:36,231 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 380 flow. Second operand 6 states and 194 transitions. [2024-06-27 21:50:36,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 503 flow [2024-06-27 21:50:36,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 470 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:36,235 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 347 flow [2024-06-27 21:50:36,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2024-06-27 21:50:36,235 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2024-06-27 21:50:36,235 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 347 flow [2024-06-27 21:50:36,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 21:50:36,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:36,236 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, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:50:36,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:36,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1030336600, now seen corresponding path program 1 times [2024-06-27 21:50:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523280432] [2024-06-27 21:50:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:36,334 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 21:50:36,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:36,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523280432] [2024-06-27 21:50:36,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523280432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:36,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:36,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250407220] [2024-06-27 21:50:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:36,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:50:36,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 347 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 21:50:36,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:50:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:36,458 INFO L124 PetriNetUnfolderBase]: 385/860 cut-off events. [2024-06-27 21:50:36,459 INFO L125 PetriNetUnfolderBase]: For 2525/2603 co-relation queries the response was YES. [2024-06-27 21:50:36,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 860 events. 385/860 cut-off events. For 2525/2603 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5294 event pairs, 183 based on Foata normal form. 20/772 useless extension candidates. Maximal degree in co-relation 2730. Up to 264 conditions per place. [2024-06-27 21:50:36,465 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 21 selfloop transitions, 3 changer transitions 25/73 dead transitions. [2024-06-27 21:50:36,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 514 flow [2024-06-27 21:50:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-27 21:50:36,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.662962962962963 [2024-06-27 21:50:36,467 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 347 flow. Second operand 6 states and 179 transitions. [2024-06-27 21:50:36,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 514 flow [2024-06-27 21:50:36,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 430 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 21:50:36,471 INFO L231 Difference]: Finished difference. Result has 74 places, 43 transitions, 206 flow [2024-06-27 21:50:36,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=74, PETRI_TRANSITIONS=43} [2024-06-27 21:50:36,472 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2024-06-27 21:50:36,473 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 43 transitions, 206 flow [2024-06-27 21:50:36,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 21:50:36,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:36,473 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, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:36,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:50:36,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:36,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash -567495002, now seen corresponding path program 2 times [2024-06-27 21:50:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502072267] [2024-06-27 21:50:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502072267] [2024-06-27 21:50:36,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502072267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:36,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:36,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148386440] [2024-06-27 21:50:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:36,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:36,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-06-27 21:50:36,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 43 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 21:50:36,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:36,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-06-27 21:50:36,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:36,632 INFO L124 PetriNetUnfolderBase]: 111/249 cut-off events. [2024-06-27 21:50:36,633 INFO L125 PetriNetUnfolderBase]: For 420/425 co-relation queries the response was YES. [2024-06-27 21:50:36,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 249 events. 111/249 cut-off events. For 420/425 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 889 event pairs, 20 based on Foata normal form. 8/230 useless extension candidates. Maximal degree in co-relation 676. Up to 103 conditions per place. [2024-06-27 21:50:36,634 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2024-06-27 21:50:36,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 55 transitions, 294 flow [2024-06-27 21:50:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 21:50:36,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158730158730159 [2024-06-27 21:50:36,635 INFO L175 Difference]: Start difference. First operand has 74 places, 43 transitions, 206 flow. Second operand 7 states and 194 transitions. [2024-06-27 21:50:36,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 55 transitions, 294 flow [2024-06-27 21:50:36,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 227 flow, removed 6 selfloop flow, removed 19 redundant places. [2024-06-27 21:50:36,636 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-06-27 21:50:36,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-06-27 21:50:36,637 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2024-06-27 21:50:36,637 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-06-27 21:50:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 21:50:36,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 21:50:36,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 21:50:36,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 21:50:36,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 21:50:36,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 21:50:36,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 21:50:36,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 21:50:36,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:50:36,641 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:36,644 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:50:36,644 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:50:36,647 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 21:50:36,647 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 21:50:36,648 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:50:36 BasicIcfg [2024-06-27 21:50:36,648 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:50:36,649 INFO L158 Benchmark]: Toolchain (without parser) took 5501.23ms. Allocated memory was 195.0MB in the beginning and 404.8MB in the end (delta: 209.7MB). Free memory was 166.6MB in the beginning and 143.6MB in the end (delta: 22.9MB). Peak memory consumption was 233.6MB. Max. memory is 16.1GB. [2024-06-27 21:50:36,649 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:50:36,649 INFO L158 Benchmark]: Witness Parser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:50:36,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.48ms. Allocated memory is still 195.0MB. Free memory was 166.3MB in the beginning and 142.1MB in the end (delta: 24.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2024-06-27 21:50:36,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.21ms. Allocated memory is still 195.0MB. Free memory was 142.1MB in the beginning and 140.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:50:36,650 INFO L158 Benchmark]: Boogie Preprocessor took 53.52ms. Allocated memory is still 195.0MB. Free memory was 140.0MB in the beginning and 137.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:50:36,650 INFO L158 Benchmark]: RCFGBuilder took 405.11ms. Allocated memory is still 195.0MB. Free memory was 137.9MB in the beginning and 116.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 21:50:36,650 INFO L158 Benchmark]: TraceAbstraction took 4486.42ms. Allocated memory was 195.0MB in the beginning and 404.8MB in the end (delta: 209.7MB). Free memory was 116.9MB in the beginning and 143.6MB in the end (delta: -26.7MB). Peak memory consumption was 185.1MB. Max. memory is 16.1GB. [2024-06-27 21:50:36,651 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.48ms. Allocated memory is still 195.0MB. Free memory was 166.3MB in the beginning and 142.1MB in the end (delta: 24.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.21ms. Allocated memory is still 195.0MB. Free memory was 142.1MB in the beginning and 140.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.52ms. Allocated memory is still 195.0MB. Free memory was 140.0MB in the beginning and 137.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 405.11ms. Allocated memory is still 195.0MB. Free memory was 137.9MB in the beginning and 116.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4486.42ms. Allocated memory was 195.0MB in the beginning and 404.8MB in the end (delta: 209.7MB). Free memory was 116.9MB in the beginning and 143.6MB in the end (delta: -26.7MB). Peak memory consumption was 185.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 781]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 783]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 784]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 69 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: 4.4s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 700 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 596 mSDsluCounter, 377 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 283 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1381 IncrementalHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 94 mSDtfsCounter, 1381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=8, InterpolantAutomatonStates: 94, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 1276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:50:36,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE