/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe030_power.opt_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:49:49,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:49:49,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:49:49,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:49:49,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:49:49,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:49:49,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:49:49,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:49:49,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:49:49,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:49:49,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:49:49,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:49:49,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:49:49,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:49:49,797 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:49:49,797 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:49:49,797 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:49:49,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:49:49,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:49:49,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:49:49,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:49:49,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:49:49,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:49:49,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:49:49,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:49:49,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:49:49,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:49:49,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:49:49,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:49:49,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:49:49,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:49:49,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:49:49,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:49:49,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:49:49,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:49:49,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:49:49,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:49:49,802 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:49:49,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:49:49,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:49:49,803 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:49:49,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:49:49,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:49:49,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:49:49,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:49:49,978 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:49:49,978 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:49:49,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe030_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 18:49:51,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:49:51,246 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:49:51,246 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe030_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 18:49:51,258 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/521963ad4/1c87b3b336214a57a32bc3ee84970656/FLAG74784e258 [2023-08-03 18:49:51,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/521963ad4/1c87b3b336214a57a32bc3ee84970656 [2023-08-03 18:49:51,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:49:51,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:49:51,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:49:51,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:49:51,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:49:51,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314362bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51, skipping insertion in model container [2023-08-03 18:49:51,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,322 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:49:51,425 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe030_power.opt_pso.opt_rmo.opt_bound2.i[967,980] [2023-08-03 18:49:51,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:49:51,620 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:49:51,627 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe030_power.opt_pso.opt_rmo.opt_bound2.i[967,980] [2023-08-03 18:49:51,636 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:49:51,638 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:49:51,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:49:51,707 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:49:51,707 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:49:51,712 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:49:51,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51 WrapperNode [2023-08-03 18:49:51,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:49:51,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:49:51,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:49:51,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:49:51,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,768 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2023-08-03 18:49:51,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:49:51,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:49:51,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:49:51,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:49:51,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:49:51,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:49:51,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:49:51,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:49:51,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (1/1) ... [2023-08-03 18:49:51,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:49:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:49:51,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 18:49:51,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:49:51,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:49:51,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:49:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:49:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:49:51,870 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:49:51,964 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:49:51,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:49:52,174 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:49:52,273 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:49:52,273 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:49:52,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:49:52 BoogieIcfgContainer [2023-08-03 18:49:52,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:49:52,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:49:52,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:49:52,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:49:52,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:49:51" (1/3) ... [2023-08-03 18:49:52,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70159023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:49:52, skipping insertion in model container [2023-08-03 18:49:52,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:49:51" (2/3) ... [2023-08-03 18:49:52,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70159023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:49:52, skipping insertion in model container [2023-08-03 18:49:52,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:49:52" (3/3) ... [2023-08-03 18:49:52,284 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe030_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 18:49:52,290 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:49:52,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:49:52,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:49:52,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:49:52,350 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:49:52,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 126 transitions, 267 flow [2023-08-03 18:49:52,524 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-03 18:49:52,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:52,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1978 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-08-03 18:49:52,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 126 transitions, 267 flow [2023-08-03 18:49:52,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 126 transitions, 267 flow [2023-08-03 18:49:52,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:49:52,555 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 126 transitions, 267 flow [2023-08-03 18:49:52,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 126 transitions, 267 flow [2023-08-03 18:49:52,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 126 transitions, 267 flow [2023-08-03 18:49:52,604 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-03 18:49:52,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:52,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1978 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-08-03 18:49:52,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 2500 [2023-08-03 18:49:55,761 INFO L134 LiptonReduction]: Checked pairs total: 5634 [2023-08-03 18:49:55,762 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-03 18:49:55,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:49:55,776 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1b9541d6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:49:55,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:49:55,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:49:55,779 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-03 18:49:55,779 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:55,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:55,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:49:55,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:49:55,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1028218420, now seen corresponding path program 1 times [2023-08-03 18:49:55,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:55,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128804988] [2023-08-03 18:49:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:49:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:49:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128804988] [2023-08-03 18:49:56,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128804988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:49:56,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:49:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:49:56,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567216952] [2023-08-03 18:49:56,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:49:56,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:49:56,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:49:56,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:49:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:49:56,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 236 [2023-08-03 18:49:56,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:56,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:49:56,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 236 [2023-08-03 18:49:56,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:49:56,296 INFO L124 PetriNetUnfolderBase]: 1189/1947 cut-off events. [2023-08-03 18:49:56,296 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 18:49:56,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3900 conditions, 1947 events. 1189/1947 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10795 event pairs, 967 based on Foata normal form. 0/1617 useless extension candidates. Maximal degree in co-relation 3883. Up to 1853 conditions per place. [2023-08-03 18:49:56,337 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 26 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-03 18:49:56,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 139 flow [2023-08-03 18:49:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:49:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:49:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-03 18:49:56,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943502824858757 [2023-08-03 18:49:56,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-03 18:49:56,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-03 18:49:56,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:49:56,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-03 18:49:56,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:56,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:56,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:56,366 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 77 flow. Second operand 3 states and 350 transitions. [2023-08-03 18:49:56,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 139 flow [2023-08-03 18:49:56,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:49:56,370 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 85 flow [2023-08-03 18:49:56,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-03 18:49:56,373 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-03 18:49:56,373 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 85 flow [2023-08-03 18:49:56,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:56,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:56,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:49:56,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:49:56,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:49:56,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1014063027, now seen corresponding path program 1 times [2023-08-03 18:49:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429331769] [2023-08-03 18:49:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:49:56,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:49:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:49:56,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:49:56,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:49:56,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:49:56,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:49:56,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:49:56,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:49:56,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:49:56,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:49:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:49:56,452 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:49:56,453 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:49:56,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:49:56,474 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:49:56,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 18:49:56,573 INFO L124 PetriNetUnfolderBase]: 93/1389 cut-off events. [2023-08-03 18:49:56,573 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:49:56,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 1389 events. 93/1389 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9613 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 1003. Up to 54 conditions per place. [2023-08-03 18:49:56,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 18:49:56,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 150 transitions, 336 flow [2023-08-03 18:49:56,580 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:49:56,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 150 transitions, 336 flow [2023-08-03 18:49:56,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 150 transitions, 336 flow [2023-08-03 18:49:56,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 18:49:56,668 INFO L124 PetriNetUnfolderBase]: 93/1389 cut-off events. [2023-08-03 18:49:56,668 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:49:56,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 1389 events. 93/1389 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9613 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 1003. Up to 54 conditions per place. [2023-08-03 18:49:56,688 INFO L119 LiptonReduction]: Number of co-enabled transitions 6000 [2023-08-03 18:49:59,742 INFO L134 LiptonReduction]: Checked pairs total: 15212 [2023-08-03 18:49:59,742 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-03 18:49:59,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:49:59,744 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1b9541d6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:49:59,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:49:59,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:49:59,746 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 18:49:59,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:49:59,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:59,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:49:59,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:49:59,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1004657895, now seen corresponding path program 1 times [2023-08-03 18:49:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:59,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618662107] [2023-08-03 18:49:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:59,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:49:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:49:59,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618662107] [2023-08-03 18:49:59,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618662107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:49:59,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:49:59,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:49:59,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233384895] [2023-08-03 18:49:59,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:49:59,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:49:59,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:49:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:49:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:49:59,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 18:49:59,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:59,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:49:59,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 18:49:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:50:22,457 INFO L124 PetriNetUnfolderBase]: 206750/274512 cut-off events. [2023-08-03 18:50:22,457 INFO L125 PetriNetUnfolderBase]: For 4476/4476 co-relation queries the response was YES. [2023-08-03 18:50:22,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541889 conditions, 274512 events. 206750/274512 cut-off events. For 4476/4476 co-relation queries the response was YES. Maximal size of possible extension queue 7911. Compared 1902047 event pairs, 169944 based on Foata normal form. 0/235473 useless extension candidates. Maximal degree in co-relation 156086. Up to 261960 conditions per place. [2023-08-03 18:50:23,772 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 39 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 18:50:23,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 224 flow [2023-08-03 18:50:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:50:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:50:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-03 18:50:23,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168539325842697 [2023-08-03 18:50:23,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-03 18:50:23,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-03 18:50:23,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:50:23,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-03 18:50:23,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:23,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:23,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:23,777 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 134 flow. Second operand 3 states and 414 transitions. [2023-08-03 18:50:23,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 224 flow [2023-08-03 18:50:23,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 218 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:50:23,784 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 140 flow [2023-08-03 18:50:23,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-08-03 18:50:23,784 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2023-08-03 18:50:23,784 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 140 flow [2023-08-03 18:50:23,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:23,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:50:23,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:50:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:50:23,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:50:23,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:50:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash 207923147, now seen corresponding path program 1 times [2023-08-03 18:50:23,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:50:23,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818975811] [2023-08-03 18:50:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:50:23,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:50:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:50:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:50:23,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:50:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818975811] [2023-08-03 18:50:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818975811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:50:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137152603] [2023-08-03 18:50:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:50:23,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:50:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:50:23,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:50:23,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:50:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:50:23,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:50:23,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:50:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:50:23,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:50:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137152603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:50:23,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:50:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:50:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632534070] [2023-08-03 18:50:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:50:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:50:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:50:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:50:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:50:23,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 18:50:23,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:23,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:50:23,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 18:50:23,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:50:44,199 INFO L124 PetriNetUnfolderBase]: 200318/265043 cut-off events. [2023-08-03 18:50:44,199 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-03 18:50:44,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523291 conditions, 265043 events. 200318/265043 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 7749. Compared 1831089 event pairs, 160850 based on Foata normal form. 0/230327 useless extension candidates. Maximal degree in co-relation 523254. Up to 252785 conditions per place. [2023-08-03 18:50:45,818 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 18:50:45,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 252 flow [2023-08-03 18:50:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:50:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:50:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-08-03 18:50:45,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230961298377028 [2023-08-03 18:50:45,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-08-03 18:50:45,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-08-03 18:50:45,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:50:45,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-08-03 18:50:45,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:45,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:45,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:45,824 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 140 flow. Second operand 3 states and 419 transitions. [2023-08-03 18:50:45,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 252 flow [2023-08-03 18:50:45,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:50:45,826 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 150 flow [2023-08-03 18:50:45,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-03 18:50:45,827 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2023-08-03 18:50:45,827 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 150 flow [2023-08-03 18:50:45,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:45,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:50:45,828 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:50:45,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 18:50:46,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:50:46,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:50:46,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:50:46,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1893604906, now seen corresponding path program 1 times [2023-08-03 18:50:46,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:50:46,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494258746] [2023-08-03 18:50:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:50:46,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:50:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:50:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:50:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:50:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494258746] [2023-08-03 18:50:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494258746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:50:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329417509] [2023-08-03 18:50:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:50:46,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:50:46,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:50:46,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:50:46,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:50:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:50:46,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:50:46,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:50:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:50:46,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:50:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329417509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:50:46,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:50:46,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:50:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866491043] [2023-08-03 18:50:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:50:46,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:50:46,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:50:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:50:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:50:46,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 267 [2023-08-03 18:50:46,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:46,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:50:46,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 267 [2023-08-03 18:50:46,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:06,189 INFO L124 PetriNetUnfolderBase]: 200306/264807 cut-off events. [2023-08-03 18:51:06,190 INFO L125 PetriNetUnfolderBase]: For 3963/3963 co-relation queries the response was YES. [2023-08-03 18:51:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523557 conditions, 264807 events. 200306/264807 cut-off events. For 3963/3963 co-relation queries the response was YES. Maximal size of possible extension queue 7799. Compared 1816160 event pairs, 138936 based on Foata normal form. 9/230976 useless extension candidates. Maximal degree in co-relation 151130. Up to 252889 conditions per place. [2023-08-03 18:51:07,848 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 43 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-08-03 18:51:07,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 261 flow [2023-08-03 18:51:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:51:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:51:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-08-03 18:51:07,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958801498127341 [2023-08-03 18:51:07,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-08-03 18:51:07,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-08-03 18:51:07,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:07,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-08-03 18:51:07,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:07,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:07,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:07,871 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 150 flow. Second operand 5 states and 662 transitions. [2023-08-03 18:51:07,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 261 flow [2023-08-03 18:51:07,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:51:07,875 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 166 flow [2023-08-03 18:51:07,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-03 18:51:07,877 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2023-08-03 18:51:07,877 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 166 flow [2023-08-03 18:51:07,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:07,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:07,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:51:07,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 18:51:08,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:08,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:51:08,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1352764396, now seen corresponding path program 1 times [2023-08-03 18:51:08,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:08,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556954323] [2023-08-03 18:51:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:51:08,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:08,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556954323] [2023-08-03 18:51:08,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556954323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:51:08,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192129332] [2023-08-03 18:51:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:08,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:08,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:51:08,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:51:08,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:51:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:08,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:51:08,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:51:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:51:08,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:51:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:51:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192129332] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:51:08,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:51:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:51:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816041487] [2023-08-03 18:51:08,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:51:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:51:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:51:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:51:08,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 267 [2023-08-03 18:51:08,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:08,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:08,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 267 [2023-08-03 18:51:08,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:23,497 INFO L124 PetriNetUnfolderBase]: 156808/205193 cut-off events. [2023-08-03 18:51:23,497 INFO L125 PetriNetUnfolderBase]: For 3027/3027 co-relation queries the response was YES. [2023-08-03 18:51:24,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405850 conditions, 205193 events. 156808/205193 cut-off events. For 3027/3027 co-relation queries the response was YES. Maximal size of possible extension queue 6301. Compared 1341841 event pairs, 104202 based on Foata normal form. 3/179816 useless extension candidates. Maximal degree in co-relation 144028. Up to 196246 conditions per place. [2023-08-03 18:51:24,835 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 43 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-03 18:51:24,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 57 transitions, 264 flow [2023-08-03 18:51:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:51:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:51:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 538 transitions. [2023-08-03 18:51:24,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037453183520599 [2023-08-03 18:51:24,837 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 538 transitions. [2023-08-03 18:51:24,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 538 transitions. [2023-08-03 18:51:24,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:24,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 538 transitions. [2023-08-03 18:51:24,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:24,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:24,841 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:24,841 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 166 flow. Second operand 4 states and 538 transitions. [2023-08-03 18:51:24,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 57 transitions, 264 flow [2023-08-03 18:51:24,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 259 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:51:24,842 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 157 flow [2023-08-03 18:51:24,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-08-03 18:51:24,843 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-08-03 18:51:24,843 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 157 flow [2023-08-03 18:51:24,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:24,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:24,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:51:24,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:51:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:25,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:51:25,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1533731837, now seen corresponding path program 1 times [2023-08-03 18:51:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055222996] [2023-08-03 18:51:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055222996] [2023-08-03 18:51:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055222996] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:51:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762231924] [2023-08-03 18:51:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:25,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:51:25,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:51:25,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:51:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:25,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:51:25,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:51:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:25,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:51:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762231924] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:51:25,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:51:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:51:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667359544] [2023-08-03 18:51:25,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:51:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:51:25,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:51:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:51:25,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 267 [2023-08-03 18:51:25,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:25,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:25,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 267 [2023-08-03 18:51:25,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:38,240 INFO L124 PetriNetUnfolderBase]: 130384/169306 cut-off events. [2023-08-03 18:51:38,240 INFO L125 PetriNetUnfolderBase]: For 2203/2203 co-relation queries the response was YES. [2023-08-03 18:51:38,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334983 conditions, 169306 events. 130384/169306 cut-off events. For 2203/2203 co-relation queries the response was YES. Maximal size of possible extension queue 5761. Compared 1080349 event pairs, 82690 based on Foata normal form. 36/149038 useless extension candidates. Maximal degree in co-relation 118676. Up to 160732 conditions per place. [2023-08-03 18:51:39,287 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 54 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-03 18:51:39,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 311 flow [2023-08-03 18:51:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:51:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:51:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-08-03 18:51:39,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149812734082397 [2023-08-03 18:51:39,289 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-08-03 18:51:39,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-08-03 18:51:39,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:39,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-08-03 18:51:39,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:39,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:39,292 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:39,292 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 157 flow. Second operand 4 states and 550 transitions. [2023-08-03 18:51:39,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 311 flow [2023-08-03 18:51:39,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 305 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:51:39,294 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 171 flow [2023-08-03 18:51:39,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-08-03 18:51:39,295 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-08-03 18:51:39,295 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 171 flow [2023-08-03 18:51:39,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:39,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:39,295 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:51:39,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 18:51:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:39,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:51:39,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 903662117, now seen corresponding path program 1 times [2023-08-03 18:51:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:39,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585351012] [2023-08-03 18:51:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:39,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585351012] [2023-08-03 18:51:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585351012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:51:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449506945] [2023-08-03 18:51:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:51:39,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:51:39,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:51:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:39,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:51:39,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:51:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:39,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:51:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449506945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:51:39,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:51:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:51:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248524626] [2023-08-03 18:51:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:51:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:51:39,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:51:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:51:39,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 267 [2023-08-03 18:51:39,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:39,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:39,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 267 [2023-08-03 18:51:39,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:51,722 INFO L124 PetriNetUnfolderBase]: 129976/168682 cut-off events. [2023-08-03 18:51:51,722 INFO L125 PetriNetUnfolderBase]: For 3097/3097 co-relation queries the response was YES. [2023-08-03 18:51:52,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334290 conditions, 168682 events. 129976/168682 cut-off events. For 3097/3097 co-relation queries the response was YES. Maximal size of possible extension queue 5761. Compared 1064167 event pairs, 40918 based on Foata normal form. 144/148522 useless extension candidates. Maximal degree in co-relation 118414. Up to 160680 conditions per place. [2023-08-03 18:51:52,618 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 58 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-08-03 18:51:52,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 329 flow [2023-08-03 18:51:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:51:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:51:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2023-08-03 18:51:52,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063670411985018 [2023-08-03 18:51:52,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2023-08-03 18:51:52,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2023-08-03 18:51:52,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:52,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2023-08-03 18:51:52,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:52,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:52,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:52,623 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 171 flow. Second operand 5 states and 676 transitions. [2023-08-03 18:51:52,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 329 flow [2023-08-03 18:51:52,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 322 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:51:52,626 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 160 flow [2023-08-03 18:51:52,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-08-03 18:51:52,626 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-08-03 18:51:52,626 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 160 flow [2023-08-03 18:51:52,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:52,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:52,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:51:52,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 18:51:52,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:52,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:51:52,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash 835754591, now seen corresponding path program 1 times [2023-08-03 18:51:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697419153] [2023-08-03 18:51:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:51:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697419153] [2023-08-03 18:51:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697419153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:51:52,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:51:52,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:51:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621692687] [2023-08-03 18:51:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:51:52,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:51:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:51:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:51:52,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 267 [2023-08-03 18:51:52,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:52,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:52,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 267 [2023-08-03 18:51:52,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:03,623 INFO L124 PetriNetUnfolderBase]: 111928/146071 cut-off events. [2023-08-03 18:52:03,623 INFO L125 PetriNetUnfolderBase]: For 3070/3070 co-relation queries the response was YES. [2023-08-03 18:52:04,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288626 conditions, 146071 events. 111928/146071 cut-off events. For 3070/3070 co-relation queries the response was YES. Maximal size of possible extension queue 5065. Compared 919665 event pairs, 19192 based on Foata normal form. 0/132247 useless extension candidates. Maximal degree in co-relation 102297. Up to 127009 conditions per place. [2023-08-03 18:52:04,472 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 55 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 18:52:04,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 319 flow [2023-08-03 18:52:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-03 18:52:04,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480649188514357 [2023-08-03 18:52:04,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-03 18:52:04,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-03 18:52:04,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:04,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-03 18:52:04,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:04,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:04,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:04,476 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 160 flow. Second operand 3 states and 439 transitions. [2023-08-03 18:52:04,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 319 flow [2023-08-03 18:52:04,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:52:04,479 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 176 flow [2023-08-03 18:52:04,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-08-03 18:52:04,480 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-08-03 18:52:04,480 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 176 flow [2023-08-03 18:52:04,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:04,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:04,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:04,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 18:52:04,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:52:04,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 835755031, now seen corresponding path program 1 times [2023-08-03 18:52:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:04,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086958308] [2023-08-03 18:52:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086958308] [2023-08-03 18:52:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086958308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:52:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 18:52:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888449291] [2023-08-03 18:52:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:52:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:52:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:52:04,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 18:52:04,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:04,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:04,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 18:52:04,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:15,687 INFO L124 PetriNetUnfolderBase]: 110296/142567 cut-off events. [2023-08-03 18:52:15,687 INFO L125 PetriNetUnfolderBase]: For 9232/9232 co-relation queries the response was YES. [2023-08-03 18:52:16,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301447 conditions, 142567 events. 110296/142567 cut-off events. For 9232/9232 co-relation queries the response was YES. Maximal size of possible extension queue 5014. Compared 886438 event pairs, 91144 based on Foata normal form. 0/128023 useless extension candidates. Maximal degree in co-relation 106442. Up to 133924 conditions per place. [2023-08-03 18:52:16,552 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 54 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-03 18:52:16,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 321 flow [2023-08-03 18:52:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-03 18:52:16,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305867665418227 [2023-08-03 18:52:16,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-03 18:52:16,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-03 18:52:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:16,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-03 18:52:16,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:16,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:16,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:16,555 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 176 flow. Second operand 3 states and 425 transitions. [2023-08-03 18:52:16,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 321 flow [2023-08-03 18:52:16,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:52:16,558 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 185 flow [2023-08-03 18:52:16,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-08-03 18:52:16,559 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2023-08-03 18:52:16,559 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 185 flow [2023-08-03 18:52:16,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:16,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:16,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:16,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 18:52:16,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:52:16,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:16,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1055975127, now seen corresponding path program 1 times [2023-08-03 18:52:16,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:16,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182585022] [2023-08-03 18:52:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182585022] [2023-08-03 18:52:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182585022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022528255] [2023-08-03 18:52:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:16,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:16,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:16,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:52:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:16,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:52:16,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:16,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:52:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022528255] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:52:16,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:52:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:52:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656255481] [2023-08-03 18:52:16,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:52:16,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:16,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:52:16,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 267 [2023-08-03 18:52:16,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:16,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:16,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 267 [2023-08-03 18:52:16,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:26,845 INFO L124 PetriNetUnfolderBase]: 102040/129415 cut-off events. [2023-08-03 18:52:26,846 INFO L125 PetriNetUnfolderBase]: For 14524/14524 co-relation queries the response was YES. [2023-08-03 18:52:27,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281768 conditions, 129415 events. 102040/129415 cut-off events. For 14524/14524 co-relation queries the response was YES. Maximal size of possible extension queue 4601. Compared 757949 event pairs, 49000 based on Foata normal form. 576/120343 useless extension candidates. Maximal degree in co-relation 99370. Up to 86596 conditions per place. [2023-08-03 18:52:27,577 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 73 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-03 18:52:27,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 423 flow [2023-08-03 18:52:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:52:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:52:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-08-03 18:52:27,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2023-08-03 18:52:27,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-08-03 18:52:27,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-08-03 18:52:27,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:27,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-08-03 18:52:27,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,582 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 185 flow. Second operand 4 states and 564 transitions. [2023-08-03 18:52:27,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 423 flow [2023-08-03 18:52:27,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 87 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:52:27,586 INFO L231 Difference]: Finished difference. Result has 79 places, 53 transitions, 203 flow [2023-08-03 18:52:27,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=79, PETRI_TRANSITIONS=53} [2023-08-03 18:52:27,587 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2023-08-03 18:52:27,587 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 53 transitions, 203 flow [2023-08-03 18:52:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:27,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:27,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 18:52:27,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:27,791 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:52:27,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash -61828766, now seen corresponding path program 1 times [2023-08-03 18:52:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:27,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645753067] [2023-08-03 18:52:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:52:27,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:52:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:52:27,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:52:27,839 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:52:27,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 18:52:27,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 18:52:27,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 18:52:27,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 18:52:27,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 18:52:27,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 18:52:27,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 18:52:27,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 18:52:27,840 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:27,843 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:52:27,843 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:52:27,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:52:27 BasicIcfg [2023-08-03 18:52:27,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:52:27,906 INFO L158 Benchmark]: Toolchain (without parser) took 156635.02ms. Allocated memory was 432.0MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 395.9MB in the beginning and 10.1GB in the end (delta: -9.7GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-03 18:52:27,906 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 341.8MB. Free memory is still 298.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:52:27,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.44ms. Allocated memory is still 432.0MB. Free memory was 395.9MB in the beginning and 372.4MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 18:52:27,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.33ms. Allocated memory is still 432.0MB. Free memory was 372.4MB in the beginning and 369.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:52:27,906 INFO L158 Benchmark]: Boogie Preprocessor took 45.28ms. Allocated memory is still 432.0MB. Free memory was 369.7MB in the beginning and 367.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:52:27,907 INFO L158 Benchmark]: RCFGBuilder took 461.16ms. Allocated memory is still 432.0MB. Free memory was 367.7MB in the beginning and 332.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-03 18:52:27,907 INFO L158 Benchmark]: TraceAbstraction took 155628.89ms. Allocated memory was 432.0MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 331.5MB in the beginning and 10.1GB in the end (delta: -9.8GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-08-03 18:52:27,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 341.8MB. Free memory is still 298.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 433.44ms. Allocated memory is still 432.0MB. Free memory was 395.9MB in the beginning and 372.4MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.33ms. Allocated memory is still 432.0MB. Free memory was 372.4MB in the beginning and 369.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.28ms. Allocated memory is still 432.0MB. Free memory was 369.7MB in the beginning and 367.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 461.16ms. Allocated memory is still 432.0MB. Free memory was 367.7MB in the beginning and 332.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 155628.89ms. Allocated memory was 432.0MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 331.5MB in the beginning and 10.1GB in the end (delta: -9.8GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 128 PlacesBefore, 38 PlacesAfterwards, 126 TransitionsBefore, 31 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 5 ChoiceCompositions, 110 TotalNumberOfCompositions, 5634 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2651, independent: 2508, independent conditional: 0, independent unconditional: 2508, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1313, independent: 1274, independent conditional: 0, independent unconditional: 1274, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2651, independent: 1234, independent conditional: 0, independent unconditional: 1234, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 1313, unknown conditional: 0, unknown unconditional: 1313] , Statistics on independence cache: Total cache size (in pairs): 109, Positive cache size: 91, Positive conditional cache size: 0, Positive unconditional cache size: 91, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 158 PlacesBefore, 62 PlacesAfterwards, 150 TransitionsBefore, 49 TransitionsAfterwards, 6000 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 5 ChoiceCompositions, 117 TotalNumberOfCompositions, 15212 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6352, independent: 6109, independent conditional: 0, independent unconditional: 6109, dependent: 243, dependent conditional: 0, dependent unconditional: 243, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3018, independent: 2941, independent conditional: 0, independent unconditional: 2941, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6352, independent: 3168, independent conditional: 0, independent unconditional: 3168, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 3018, unknown conditional: 0, unknown unconditional: 3018] , Statistics on independence cache: Total cache size (in pairs): 276, Positive cache size: 252, Positive conditional cache size: 0, Positive unconditional cache size: 252, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L710] 0 _Bool main$tmp_guard0; [L711] 0 _Bool main$tmp_guard1; [L713] 0 int x = 0; [L715] 0 int y = 0; [L716] 0 _Bool y$flush_delayed; [L717] 0 int y$mem_tmp; [L718] 0 _Bool y$r_buff0_thd0; [L719] 0 _Bool y$r_buff0_thd1; [L720] 0 _Bool y$r_buff0_thd2; [L721] 0 _Bool y$r_buff0_thd3; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$r_buff1_thd3; [L726] 0 _Bool y$read_delayed; [L727] 0 int *y$read_delayed_var; [L728] 0 int y$w_buff0; [L729] 0 _Bool y$w_buff0_used; [L730] 0 int y$w_buff1; [L731] 0 _Bool y$w_buff1_used; [L733] 0 int z = 0; [L734] 0 _Bool weak$$choice0; [L735] 0 _Bool weak$$choice2; [L811] 0 pthread_t t2492[2]; [L812] 0 int asdf=0; VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L812] COND TRUE 0 asdf<2 [L812] FCALL, FORK 0 pthread_create(&t2492[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2492[asdf], ((void *)0), P0, ((void *)0))=-5, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L812] 0 asdf++ VAL [__unbuffered_cnt=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L812] COND TRUE 0 asdf<2 [L812] FCALL, FORK 0 pthread_create(&t2492[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2492[asdf], ((void *)0), P0, ((void *)0))=-4, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L812] 0 asdf++ VAL [__unbuffered_cnt=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L812] COND FALSE 0 !(asdf<2) [L813] 0 pthread_t t2493[2]; [L814] 0 int asdf=0; VAL [__unbuffered_cnt=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L814] COND TRUE 0 asdf<2 [L814] FCALL, FORK 0 pthread_create(&t2493[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2493[asdf], ((void *)0), P1, ((void *)0))=-3, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L814] 0 asdf++ VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L814] COND TRUE 0 asdf<2 [L814] FCALL, FORK 0 pthread_create(&t2493[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2493[asdf], ((void *)0), P1, ((void *)0))=-2, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L814] 0 asdf++ VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L814] COND FALSE 0 !(asdf<2) [L815] 0 pthread_t t2494[2]; [L816] 0 int asdf=0; VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t2494[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2494[asdf], ((void *)0), P2, ((void *)0))=-1, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L774] 5 y$w_buff1 = y$w_buff0 [L775] 5 y$w_buff0 = 2 [L776] 5 y$w_buff1_used = y$w_buff0_used [L777] 5 y$w_buff0_used = (_Bool)1 [L778] CALL 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L778] RET 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L779] 5 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 5 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 5 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 5 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 5 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t2494[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2494[asdf], ((void *)0), P2, ((void *)0))=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L774] 6 y$w_buff1 = y$w_buff0 [L775] 6 y$w_buff0 = 2 [L776] 6 y$w_buff1_used = y$w_buff0_used [L777] 6 y$w_buff0_used = (_Bool)1 [L778] CALL 6 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, arg={0:0}, arg={0:0}, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=2, y$w_buff1_used=1, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 146 locations, 6 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: 4.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 170 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: 151.4s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 145.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 381 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 313 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 920 IncrementalHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 12 mSDtfsCounter, 920 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=9, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1108 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 116/136 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 18:52:27,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...