/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:43:54,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:43:54,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:43:54,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:43:54,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:43:54,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:43:54,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:43:54,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:43:54,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:43:54,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:43:54,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:43:54,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:43:54,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:43:54,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:43:54,522 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:43:54,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:43:54,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:43:54,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:43:54,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:43:54,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:43:54,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:43:54,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:43:54,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:43:54,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:43:54,525 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:43:54,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:43:54,525 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:43:54,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:43:54,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:43:54,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:43:54,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:43:54,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:43:54,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:43:54,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:43:54,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:43:54,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:43:54,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:43:54,529 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:43:54,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:43:54,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:43:54,530 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:43:54,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:43:54,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:43:54,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:43:54,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:43:54,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:43:54,794 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:43:54,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-1_bound2.i [2023-08-04 01:43:55,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:43:56,220 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:43:56,221 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_triangular-1_bound2.i [2023-08-04 01:43:56,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69fcd7b7/7bf5b0c649d34866b29ebe83ab111e1c/FLAG531ced10b [2023-08-04 01:43:56,243 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69fcd7b7/7bf5b0c649d34866b29ebe83ab111e1c [2023-08-04 01:43:56,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:43:56,246 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:43:56,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:43:56,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:43:56,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:43:56,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44574dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56, skipping insertion in model container [2023-08-04 01:43:56,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,285 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:43:56,577 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_triangular-1_bound2.i[31034,31047] [2023-08-04 01:43:56,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:43:56,588 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:43:56,615 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-04 01:43:56,621 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-04 01:43:56,646 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_triangular-1_bound2.i[31034,31047] [2023-08-04 01:43:56,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:43:56,678 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:43:56,678 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:43:56,683 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:43:56,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56 WrapperNode [2023-08-04 01:43:56,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:43:56,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:43:56,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:43:56,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:43:56,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,717 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-04 01:43:56,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:43:56,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:43:56,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:43:56,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:43:56,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:43:56,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:43:56,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:43:56,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:43:56,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (1/1) ... [2023-08-04 01:43:56,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:43:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:43:56,780 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) [2023-08-04 01:43:56,796 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 [2023-08-04 01:43:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-04 01:43:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-04 01:43:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:43:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:43:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 01:43:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:43:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:43:56,819 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:43:56,928 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:43:56,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:43:57,072 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:43:57,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:43:57,078 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 01:43:57,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:43:57 BoogieIcfgContainer [2023-08-04 01:43:57,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:43:57,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:43:57,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:43:57,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:43:57,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:43:56" (1/3) ... [2023-08-04 01:43:57,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6288c049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:43:57, skipping insertion in model container [2023-08-04 01:43:57,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:43:56" (2/3) ... [2023-08-04 01:43:57,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6288c049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:43:57, skipping insertion in model container [2023-08-04 01:43:57,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:43:57" (3/3) ... [2023-08-04 01:43:57,088 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_triangular-1_bound2.i [2023-08-04 01:43:57,096 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:43:57,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:43:57,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:43:57,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:43:57,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:43:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 01:43:57,245 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-04 01:43:57,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:43:57,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-04 01:43:57,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 01:43:57,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 170 flow [2023-08-04 01:43:57,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:43:57,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-04 01:43:57,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 80 transitions, 170 flow [2023-08-04 01:43:57,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 80 transitions, 170 flow [2023-08-04 01:43:57,304 INFO L124 PetriNetUnfolderBase]: 16/165 cut-off events. [2023-08-04 01:43:57,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:43:57,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 92. Up to 8 conditions per place. [2023-08-04 01:43:57,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 1694 [2023-08-04 01:43:59,137 INFO L134 LiptonReduction]: Checked pairs total: 1481 [2023-08-04 01:43:59,138 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-04 01:43:59,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:43:59,164 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;@1f76d3c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:43:59,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 01:43:59,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:43:59,173 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2023-08-04 01:43:59,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:43:59,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:43:59,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:43:59,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:43:59,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:43:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash 958838678, now seen corresponding path program 1 times [2023-08-04 01:43:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:43:59,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39284040] [2023-08-04 01:43:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:43:59,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:43:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:43:59,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:43:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:43:59,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:43:59,384 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:43:59,385 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 01:43:59,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 01:43:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:43:59,388 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:43:59,395 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-04 01:43:59,396 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:43:59,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:43:59,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:43:59,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 01:43:59,492 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-04 01:43:59,492 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:43:59,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-04 01:43:59,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 01:43:59,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 232 flow [2023-08-04 01:43:59,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:43:59,501 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-04 01:43:59,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-04 01:43:59,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 01:43:59,533 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-04 01:43:59,533 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:43:59,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-04 01:43:59,541 INFO L119 LiptonReduction]: Number of co-enabled transitions 4444 [2023-08-04 01:44:01,329 INFO L134 LiptonReduction]: Checked pairs total: 4064 [2023-08-04 01:44:01,330 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 01:44:01,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:44:01,333 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;@1f76d3c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:44:01,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 01:44:01,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:44:01,339 INFO L124 PetriNetUnfolderBase]: 11/64 cut-off events. [2023-08-04 01:44:01,339 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 01:44:01,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:01,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:44:01,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:44:01,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash 874904513, now seen corresponding path program 1 times [2023-08-04 01:44:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651290754] [2023-08-04 01:44:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:44:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651290754] [2023-08-04 01:44:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651290754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040791458] [2023-08-04 01:44:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:01,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:01,481 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) [2023-08-04 01:44:01,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:44:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:01,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:44:01,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:44:01,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040791458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:44:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960189716] [2023-08-04 01:44:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:01,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:44:01,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 01:44:01,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:01,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:01,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 01:44:01,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:02,082 INFO L124 PetriNetUnfolderBase]: 3188/4313 cut-off events. [2023-08-04 01:44:02,083 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-04 01:44:02,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8769 conditions, 4313 events. 3188/4313 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17030 event pairs, 988 based on Foata normal form. 0/2857 useless extension candidates. Maximal degree in co-relation 2671. Up to 4179 conditions per place. [2023-08-04 01:44:02,105 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 30 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-08-04 01:44:02,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 178 flow [2023-08-04 01:44:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:44:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:44:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2023-08-04 01:44:02,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-04 01:44:02,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2023-08-04 01:44:02,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2023-08-04 01:44:02,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:02,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2023-08-04 01:44:02,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,149 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,155 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 84 flow. Second operand 5 states and 475 transitions. [2023-08-04 01:44:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 178 flow [2023-08-04 01:44:02,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:02,163 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 90 flow [2023-08-04 01:44:02,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-04 01:44:02,169 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 01:44:02,169 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 90 flow [2023-08-04 01:44:02,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:02,169 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:44:02,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 01:44:02,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:02,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:44:02,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1616502145, now seen corresponding path program 1 times [2023-08-04 01:44:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:02,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10294876] [2023-08-04 01:44:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:02,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:02,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:02,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10294876] [2023-08-04 01:44:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10294876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:02,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:44:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:44:02,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350823302] [2023-08-04 01:44:02,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:02,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:44:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:44:02,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:44:02,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 01:44:02,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:02,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 01:44:02,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:02,611 INFO L124 PetriNetUnfolderBase]: 1495/2068 cut-off events. [2023-08-04 01:44:02,611 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-04 01:44:02,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4263 conditions, 2068 events. 1495/2068 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7391 event pairs, 642 based on Foata normal form. 1/1523 useless extension candidates. Maximal degree in co-relation 1354. Up to 1975 conditions per place. [2023-08-04 01:44:02,624 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 26 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-04 01:44:02,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 151 flow [2023-08-04 01:44:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:44:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:44:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-04 01:44:02,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2023-08-04 01:44:02,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-04 01:44:02,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-04 01:44:02,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:02,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-04 01:44:02,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,628 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 90 flow. Second operand 3 states and 292 transitions. [2023-08-04 01:44:02,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 151 flow [2023-08-04 01:44:02,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:02,629 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 88 flow [2023-08-04 01:44:02,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-04 01:44:02,630 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-04 01:44:02,630 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 88 flow [2023-08-04 01:44:02,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:02,631 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:44:02,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:44:02,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1749329125, now seen corresponding path program 1 times [2023-08-04 01:44:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094875629] [2023-08-04 01:44:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094875629] [2023-08-04 01:44:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094875629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042414990] [2023-08-04 01:44:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:02,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:02,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:02,723 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) [2023-08-04 01:44:02,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:44:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:02,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:44:02,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:02,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:44:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042414990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:02,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:02,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:44:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363994281] [2023-08-04 01:44:02,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:02,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:02,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 01:44:02,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:02,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:02,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 01:44:02,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:03,034 INFO L124 PetriNetUnfolderBase]: 1216/1654 cut-off events. [2023-08-04 01:44:03,034 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-04 01:44:03,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 1654 events. 1216/1654 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5402 event pairs, 306 based on Foata normal form. 3/1215 useless extension candidates. Maximal degree in co-relation 1370. Up to 1549 conditions per place. [2023-08-04 01:44:03,044 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 30 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-04 01:44:03,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 171 flow [2023-08-04 01:44:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2023-08-04 01:44:03,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2023-08-04 01:44:03,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2023-08-04 01:44:03,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2023-08-04 01:44:03,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:03,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2023-08-04 01:44:03,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,049 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,049 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 88 flow. Second operand 4 states and 382 transitions. [2023-08-04 01:44:03,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 171 flow [2023-08-04 01:44:03,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:44:03,050 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 85 flow [2023-08-04 01:44:03,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-04 01:44:03,051 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-04 01:44:03,051 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 85 flow [2023-08-04 01:44:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:03,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:03,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:03,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 01:44:03,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:44:03,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1188226024, now seen corresponding path program 1 times [2023-08-04 01:44:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262131703] [2023-08-04 01:44:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:03,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:44:03,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262131703] [2023-08-04 01:44:03,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262131703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254147903] [2023-08-04 01:44:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:03,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:03,336 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) [2023-08-04 01:44:03,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:44:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:03,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:44:03,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:44:03,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254147903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:03,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:44:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868756890] [2023-08-04 01:44:03,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:03,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:44:03,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 01:44:03,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:03,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 01:44:03,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:03,604 INFO L124 PetriNetUnfolderBase]: 892/1222 cut-off events. [2023-08-04 01:44:03,604 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-08-04 01:44:03,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1222 events. 892/1222 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3698 event pairs, 22 based on Foata normal form. 81/969 useless extension candidates. Maximal degree in co-relation 1015. Up to 567 conditions per place. [2023-08-04 01:44:03,607 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-08-04 01:44:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 243 flow [2023-08-04 01:44:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:44:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:44:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2023-08-04 01:44:03,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126315789473684 [2023-08-04 01:44:03,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2023-08-04 01:44:03,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2023-08-04 01:44:03,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:03,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2023-08-04 01:44:03,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,613 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 85 flow. Second operand 5 states and 487 transitions. [2023-08-04 01:44:03,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 243 flow [2023-08-04 01:44:03,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:44:03,617 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-04 01:44:03,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-04 01:44:03,619 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-04 01:44:03,619 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-04 01:44:03,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:03,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 01:44:03,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 01:44:03,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:03,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:03,826 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 01:44:03,826 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-04 01:44:03,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 01:44:03,851 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-04 01:44:03,851 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:44:03,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-04 01:44:03,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 01:44:03,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 104 transitions, 232 flow [2023-08-04 01:44:03,854 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:44:03,854 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-04 01:44:03,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 104 transitions, 232 flow [2023-08-04 01:44:03,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 104 transitions, 232 flow [2023-08-04 01:44:03,876 INFO L124 PetriNetUnfolderBase]: 37/358 cut-off events. [2023-08-04 01:44:03,876 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:44:03,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 358 events. 37/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1423 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 257. Up to 18 conditions per place. [2023-08-04 01:44:03,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 4444 [2023-08-04 01:44:05,597 INFO L134 LiptonReduction]: Checked pairs total: 4064 [2023-08-04 01:44:05,597 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 01:44:05,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:44:05,599 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;@1f76d3c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:44:05,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:44:05,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:44:05,601 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-04 01:44:05,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:44:05,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:05,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 01:44:05,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:05,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash 19142671, now seen corresponding path program 1 times [2023-08-04 01:44:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233893886] [2023-08-04 01:44:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:44:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233893886] [2023-08-04 01:44:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233893886] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:05,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:44:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:44:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232049112] [2023-08-04 01:44:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:44:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:44:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:44:05,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 01:44:05,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:05,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:05,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 01:44:05,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:05,935 INFO L124 PetriNetUnfolderBase]: 3088/4138 cut-off events. [2023-08-04 01:44:05,935 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-04 01:44:05,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 4138 events. 3088/4138 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15465 event pairs, 1386 based on Foata normal form. 0/2737 useless extension candidates. Maximal degree in co-relation 2694. Up to 4045 conditions per place. [2023-08-04 01:44:05,956 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 27 selfloop transitions, 2 changer transitions 3/34 dead transitions. [2023-08-04 01:44:05,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 152 flow [2023-08-04 01:44:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:44:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:44:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-04 01:44:05,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519298245614035 [2023-08-04 01:44:05,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-04 01:44:05,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-04 01:44:05,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:05,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-04 01:44:05,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:05,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:05,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:05,961 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 84 flow. Second operand 3 states and 296 transitions. [2023-08-04 01:44:05,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 152 flow [2023-08-04 01:44:05,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 148 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 01:44:05,963 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 80 flow [2023-08-04 01:44:05,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-04 01:44:05,964 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 01:44:05,964 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 80 flow [2023-08-04 01:44:05,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:05,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:05,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:44:05,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:05,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1535574891, now seen corresponding path program 1 times [2023-08-04 01:44:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762594414] [2023-08-04 01:44:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:44:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762594414] [2023-08-04 01:44:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762594414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695980691] [2023-08-04 01:44:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:05,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:05,995 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) [2023-08-04 01:44:06,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:44:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:06,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:44:06,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:44:06,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695980691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:06,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:44:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544685118] [2023-08-04 01:44:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:44:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:44:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:06,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 01:44:06,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:06,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 01:44:06,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:06,272 INFO L124 PetriNetUnfolderBase]: 2521/3355 cut-off events. [2023-08-04 01:44:06,273 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-04 01:44:06,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 3355 events. 2521/3355 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11663 event pairs, 1120 based on Foata normal form. 0/2323 useless extension candidates. Maximal degree in co-relation 6801. Up to 3127 conditions per place. [2023-08-04 01:44:06,289 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 34 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-04 01:44:06,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 174 flow [2023-08-04 01:44:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:44:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:44:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-04 01:44:06,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2023-08-04 01:44:06,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-04 01:44:06,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-04 01:44:06,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:06,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-04 01:44:06,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,294 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 80 flow. Second operand 3 states and 300 transitions. [2023-08-04 01:44:06,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 174 flow [2023-08-04 01:44:06,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:06,295 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 90 flow [2023-08-04 01:44:06,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-04 01:44:06,296 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-04 01:44:06,296 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 90 flow [2023-08-04 01:44:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:06,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:06,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:06,497 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 [2023-08-04 01:44:06,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:06,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2121831394, now seen corresponding path program 1 times [2023-08-04 01:44:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027735713] [2023-08-04 01:44:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:06,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:44:06,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027735713] [2023-08-04 01:44:06,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027735713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453983916] [2023-08-04 01:44:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:06,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:06,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:06,532 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) [2023-08-04 01:44:06,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:44:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:06,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:44:06,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:44:06,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:44:06,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453983916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:06,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:06,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:44:06,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762126626] [2023-08-04 01:44:06,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:06,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:06,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 01:44:06,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:06,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 01:44:06,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:06,847 INFO L124 PetriNetUnfolderBase]: 2044/2680 cut-off events. [2023-08-04 01:44:06,848 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-08-04 01:44:06,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 2680 events. 2044/2680 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8666 event pairs, 564 based on Foata normal form. 3/1965 useless extension candidates. Maximal degree in co-relation 2272. Up to 2575 conditions per place. [2023-08-04 01:44:06,861 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 33 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-08-04 01:44:06,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 186 flow [2023-08-04 01:44:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2023-08-04 01:44:06,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2023-08-04 01:44:06,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2023-08-04 01:44:06,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2023-08-04 01:44:06,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:06,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2023-08-04 01:44:06,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,867 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 90 flow. Second operand 4 states and 385 transitions. [2023-08-04 01:44:06,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 186 flow [2023-08-04 01:44:06,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:06,868 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 102 flow [2023-08-04 01:44:06,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-04 01:44:06,869 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-04 01:44:06,869 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 102 flow [2023-08-04 01:44:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:06,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:06,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:06,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:07,076 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 [2023-08-04 01:44:07,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:07,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1705104477, now seen corresponding path program 1 times [2023-08-04 01:44:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134361290] [2023-08-04 01:44:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:44:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134361290] [2023-08-04 01:44:07,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134361290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:07,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067658330] [2023-08-04 01:44:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:07,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:07,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:07,121 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) [2023-08-04 01:44:07,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:44:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:07,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:44:07,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:44:07,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:44:07,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067658330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:07,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:07,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:44:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471224347] [2023-08-04 01:44:07,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:07,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:07,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-04 01:44:07,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:07,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-04 01:44:07,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:07,431 INFO L124 PetriNetUnfolderBase]: 1864/2437 cut-off events. [2023-08-04 01:44:07,431 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-04 01:44:07,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 2437 events. 1864/2437 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7598 event pairs, 400 based on Foata normal form. 27/1806 useless extension candidates. Maximal degree in co-relation 2059. Up to 1282 conditions per place. [2023-08-04 01:44:07,441 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 45 selfloop transitions, 3 changer transitions 1/51 dead transitions. [2023-08-04 01:44:07,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 246 flow [2023-08-04 01:44:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-04 01:44:07,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223684210526316 [2023-08-04 01:44:07,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-04 01:44:07,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-04 01:44:07,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:07,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-04 01:44:07,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,446 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,446 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 102 flow. Second operand 4 states and 397 transitions. [2023-08-04 01:44:07,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 246 flow [2023-08-04 01:44:07,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 239 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 01:44:07,448 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 109 flow [2023-08-04 01:44:07,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-08-04 01:44:07,449 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-04 01:44:07,449 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 109 flow [2023-08-04 01:44:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:07,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:07,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:07,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:07,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1812706133, now seen corresponding path program 1 times [2023-08-04 01:44:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405628103] [2023-08-04 01:44:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:07,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:44:07,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:07,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405628103] [2023-08-04 01:44:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405628103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:07,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:44:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:44:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816289367] [2023-08-04 01:44:07,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:07,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 01:44:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 01:44:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 01:44:07,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 190 [2023-08-04 01:44:07,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:07,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:07,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 190 [2023-08-04 01:44:07,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:08,146 INFO L124 PetriNetUnfolderBase]: 2936/3855 cut-off events. [2023-08-04 01:44:08,147 INFO L125 PetriNetUnfolderBase]: For 2110/2110 co-relation queries the response was YES. [2023-08-04 01:44:08,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8991 conditions, 3855 events. 2936/3855 cut-off events. For 2110/2110 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14039 event pairs, 598 based on Foata normal form. 153/2924 useless extension candidates. Maximal degree in co-relation 3745. Up to 2367 conditions per place. [2023-08-04 01:44:08,162 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 61 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-08-04 01:44:08,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 396 flow [2023-08-04 01:44:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:44:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:44:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2023-08-04 01:44:08,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168421052631579 [2023-08-04 01:44:08,165 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2023-08-04 01:44:08,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2023-08-04 01:44:08,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:08,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2023-08-04 01:44:08,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,168 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,168 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 109 flow. Second operand 5 states and 491 transitions. [2023-08-04 01:44:08,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 396 flow [2023-08-04 01:44:08,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 382 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 01:44:08,171 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 185 flow [2023-08-04 01:44:08,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-04 01:44:08,172 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-04 01:44:08,172 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 185 flow [2023-08-04 01:44:08,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:08,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 01:44:08,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:08,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 869720040, now seen corresponding path program 1 times [2023-08-04 01:44:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:08,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827265913] [2023-08-04 01:44:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827265913] [2023-08-04 01:44:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827265913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013421876] [2023-08-04 01:44:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:08,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:08,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:44:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:08,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-04 01:44:08,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:08,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013421876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:08,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:08,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:44:08,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193223105] [2023-08-04 01:44:08,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:08,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:08,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-04 01:44:08,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:08,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:08,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:08,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:08,800 INFO L124 PetriNetUnfolderBase]: 3752/4937 cut-off events. [2023-08-04 01:44:08,800 INFO L125 PetriNetUnfolderBase]: For 4033/4033 co-relation queries the response was YES. [2023-08-04 01:44:08,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13944 conditions, 4937 events. 3752/4937 cut-off events. For 4033/4033 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18874 event pairs, 1186 based on Foata normal form. 72/4991 useless extension candidates. Maximal degree in co-relation 11922. Up to 1990 conditions per place. [2023-08-04 01:44:08,828 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 53 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2023-08-04 01:44:08,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 418 flow [2023-08-04 01:44:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:44:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:44:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2023-08-04 01:44:08,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2023-08-04 01:44:08,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2023-08-04 01:44:08,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2023-08-04 01:44:08,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:08,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2023-08-04 01:44:08,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,832 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 185 flow. Second operand 4 states and 385 transitions. [2023-08-04 01:44:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 418 flow [2023-08-04 01:44:08,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:44:08,843 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 258 flow [2023-08-04 01:44:08,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-04 01:44:08,843 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-04 01:44:08,843 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 258 flow [2023-08-04 01:44:08,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:08,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:08,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:08,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:09,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:09,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:09,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1573594210, now seen corresponding path program 1 times [2023-08-04 01:44:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:09,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112369163] [2023-08-04 01:44:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:09,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:09,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112369163] [2023-08-04 01:44:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112369163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904751406] [2023-08-04 01:44:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:09,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:09,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:09,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:09,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:44:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:09,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-04 01:44:09,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:09,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904751406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:09,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:09,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-04 01:44:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441918231] [2023-08-04 01:44:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:44:09,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:09,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:09,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:09,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:09,790 INFO L124 PetriNetUnfolderBase]: 5264/6855 cut-off events. [2023-08-04 01:44:09,790 INFO L125 PetriNetUnfolderBase]: For 8364/8364 co-relation queries the response was YES. [2023-08-04 01:44:09,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21213 conditions, 6855 events. 5264/6855 cut-off events. For 8364/8364 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 27743 event pairs, 1047 based on Foata normal form. 136/6981 useless extension candidates. Maximal degree in co-relation 17942. Up to 3620 conditions per place. [2023-08-04 01:44:09,830 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 86 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2023-08-04 01:44:09,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 104 transitions, 693 flow [2023-08-04 01:44:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 01:44:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 01:44:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2023-08-04 01:44:09,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140350877192983 [2023-08-04 01:44:09,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2023-08-04 01:44:09,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2023-08-04 01:44:09,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:09,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2023-08-04 01:44:09,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,836 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,836 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 258 flow. Second operand 6 states and 586 transitions. [2023-08-04 01:44:09,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 104 transitions, 693 flow [2023-08-04 01:44:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 104 transitions, 669 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:09,858 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 354 flow [2023-08-04 01:44:09,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-04 01:44:09,859 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-08-04 01:44:09,859 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 354 flow [2023-08-04 01:44:09,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:09,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:09,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:09,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:10,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 01:44:10,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:10,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1573567240, now seen corresponding path program 2 times [2023-08-04 01:44:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916377831] [2023-08-04 01:44:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:44:10,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:10,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916377831] [2023-08-04 01:44:10,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916377831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:10,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:44:10,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:44:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673987429] [2023-08-04 01:44:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:10,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:44:10,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:10,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:44:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:44:10,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:10,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 354 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:10,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:10,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:10,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:10,745 INFO L124 PetriNetUnfolderBase]: 5576/7313 cut-off events. [2023-08-04 01:44:10,745 INFO L125 PetriNetUnfolderBase]: For 14029/14029 co-relation queries the response was YES. [2023-08-04 01:44:10,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24925 conditions, 7313 events. 5576/7313 cut-off events. For 14029/14029 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30071 event pairs, 1219 based on Foata normal form. 136/7439 useless extension candidates. Maximal degree in co-relation 19027. Up to 3876 conditions per place. [2023-08-04 01:44:10,794 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 84 selfloop transitions, 23 changer transitions 0/109 dead transitions. [2023-08-04 01:44:10,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 808 flow [2023-08-04 01:44:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 01:44:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 01:44:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2023-08-04 01:44:10,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096491228070176 [2023-08-04 01:44:10,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2023-08-04 01:44:10,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2023-08-04 01:44:10,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:10,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2023-08-04 01:44:10,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:10,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:10,800 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:10,800 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 354 flow. Second operand 6 states and 581 transitions. [2023-08-04 01:44:10,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 808 flow [2023-08-04 01:44:10,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 742 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-04 01:44:10,896 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 452 flow [2023-08-04 01:44:10,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-04 01:44:10,897 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-08-04 01:44:10,897 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 452 flow [2023-08-04 01:44:10,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:10,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:10,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:10,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 01:44:10,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:10,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1913142951, now seen corresponding path program 1 times [2023-08-04 01:44:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:10,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598987839] [2023-08-04 01:44:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:11,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598987839] [2023-08-04 01:44:11,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598987839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:11,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099961911] [2023-08-04 01:44:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:11,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:11,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:11,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 01:44:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:11,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 01:44:11,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:11,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099961911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:11,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-04 01:44:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054357587] [2023-08-04 01:44:11,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:11,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-04 01:44:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-04 01:44:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-04 01:44:11,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:11,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 452 flow. Second operand has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:11,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:11,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:11,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:12,932 INFO L124 PetriNetUnfolderBase]: 8312/10815 cut-off events. [2023-08-04 01:44:12,932 INFO L125 PetriNetUnfolderBase]: For 29562/29562 co-relation queries the response was YES. [2023-08-04 01:44:12,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39011 conditions, 10815 events. 8312/10815 cut-off events. For 29562/29562 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 46912 event pairs, 616 based on Foata normal form. 256/11061 useless extension candidates. Maximal degree in co-relation 33108. Up to 1991 conditions per place. [2023-08-04 01:44:12,990 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 159 selfloop transitions, 49 changer transitions 0/210 dead transitions. [2023-08-04 01:44:12,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 210 transitions, 1540 flow [2023-08-04 01:44:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-04 01:44:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-04 01:44:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1264 transitions. [2023-08-04 01:44:12,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117408906882591 [2023-08-04 01:44:12,995 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1264 transitions. [2023-08-04 01:44:12,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1264 transitions. [2023-08-04 01:44:12,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:12,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1264 transitions. [2023-08-04 01:44:12,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.23076923076923) internal successors, (1264), 13 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:13,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 190.0) internal successors, (2660), 14 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:13,002 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 190.0) internal successors, (2660), 14 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:13,002 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 452 flow. Second operand 13 states and 1264 transitions. [2023-08-04 01:44:13,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 210 transitions, 1540 flow [2023-08-04 01:44:13,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 210 transitions, 1519 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-04 01:44:13,247 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 813 flow [2023-08-04 01:44:13,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=813, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-04 01:44:13,249 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-08-04 01:44:13,249 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 813 flow [2023-08-04 01:44:13,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:13,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:13,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:13,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 01:44:13,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:13,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash -311185572, now seen corresponding path program 2 times [2023-08-04 01:44:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676619581] [2023-08-04 01:44:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676619581] [2023-08-04 01:44:13,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676619581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068702798] [2023-08-04 01:44:13,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 01:44:13,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:13,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:13,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:13,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 01:44:13,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 01:44:13,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 01:44:13,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-04 01:44:13,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:13,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068702798] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:13,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-04 01:44:13,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332853379] [2023-08-04 01:44:13,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:13,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-04 01:44:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-04 01:44:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-04 01:44:13,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:13,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 813 flow. Second operand has 15 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:13,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:13,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:13,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:15,903 INFO L124 PetriNetUnfolderBase]: 14440/18687 cut-off events. [2023-08-04 01:44:15,903 INFO L125 PetriNetUnfolderBase]: For 127094/127094 co-relation queries the response was YES. [2023-08-04 01:44:15,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86148 conditions, 18687 events. 14440/18687 cut-off events. For 127094/127094 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 86254 event pairs, 643 based on Foata normal form. 320/18997 useless extension candidates. Maximal degree in co-relation 78698. Up to 3747 conditions per place. [2023-08-04 01:44:16,017 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 245 selfloop transitions, 86 changer transitions 0/333 dead transitions. [2023-08-04 01:44:16,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 333 transitions, 3105 flow [2023-08-04 01:44:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-04 01:44:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-04 01:44:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1946 transitions. [2023-08-04 01:44:16,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121052631578947 [2023-08-04 01:44:16,022 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1946 transitions. [2023-08-04 01:44:16,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1946 transitions. [2023-08-04 01:44:16,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:16,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1946 transitions. [2023-08-04 01:44:16,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:16,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:16,102 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:16,102 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 813 flow. Second operand 20 states and 1946 transitions. [2023-08-04 01:44:16,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 333 transitions, 3105 flow [2023-08-04 01:44:16,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 333 transitions, 2862 flow, removed 101 selfloop flow, removed 6 redundant places. [2023-08-04 01:44:16,847 INFO L231 Difference]: Finished difference. Result has 105 places, 115 transitions, 1472 flow [2023-08-04 01:44:16,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1472, PETRI_PLACES=105, PETRI_TRANSITIONS=115} [2023-08-04 01:44:16,848 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 71 predicate places. [2023-08-04 01:44:16,848 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 115 transitions, 1472 flow [2023-08-04 01:44:16,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:16,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:16,849 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:16,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-04 01:44:17,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 01:44:17,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:17,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1812656873, now seen corresponding path program 3 times [2023-08-04 01:44:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745071069] [2023-08-04 01:44:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:17,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745071069] [2023-08-04 01:44:17,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745071069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110319151] [2023-08-04 01:44:17,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 01:44:17,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:17,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:17,234 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:17,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 01:44:17,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-04 01:44:17,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 01:44:17,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-04 01:44:17,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:17,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110319151] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:17,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-08-04 01:44:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142225783] [2023-08-04 01:44:17,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-04 01:44:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-04 01:44:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-04 01:44:17,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:17,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 115 transitions, 1472 flow. Second operand has 17 states, 17 states have (on average 85.41176470588235) internal successors, (1452), 17 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:17,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:17,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:20,543 INFO L124 PetriNetUnfolderBase]: 19720/25471 cut-off events. [2023-08-04 01:44:20,543 INFO L125 PetriNetUnfolderBase]: For 369826/369826 co-relation queries the response was YES. [2023-08-04 01:44:20,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145125 conditions, 25471 events. 19720/25471 cut-off events. For 369826/369826 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 119845 event pairs, 616 based on Foata normal form. 384/25845 useless extension candidates. Maximal degree in co-relation 133854. Up to 4546 conditions per place. [2023-08-04 01:44:20,706 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 303 selfloop transitions, 118 changer transitions 0/423 dead transitions. [2023-08-04 01:44:20,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 423 transitions, 4834 flow [2023-08-04 01:44:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-04 01:44:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-04 01:44:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2430 transitions. [2023-08-04 01:44:20,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511578947368421 [2023-08-04 01:44:20,712 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2430 transitions. [2023-08-04 01:44:20,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2430 transitions. [2023-08-04 01:44:20,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:20,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2430 transitions. [2023-08-04 01:44:20,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 97.2) internal successors, (2430), 25 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:20,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:20,725 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:20,725 INFO L175 Difference]: Start difference. First operand has 105 places, 115 transitions, 1472 flow. Second operand 25 states and 2430 transitions. [2023-08-04 01:44:20,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 423 transitions, 4834 flow [2023-08-04 01:44:23,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 423 transitions, 4242 flow, removed 280 selfloop flow, removed 5 redundant places. [2023-08-04 01:44:23,842 INFO L231 Difference]: Finished difference. Result has 135 places, 147 transitions, 2154 flow [2023-08-04 01:44:23,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2154, PETRI_PLACES=135, PETRI_TRANSITIONS=147} [2023-08-04 01:44:23,842 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2023-08-04 01:44:23,843 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 147 transitions, 2154 flow [2023-08-04 01:44:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.41176470588235) internal successors, (1452), 17 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:23,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:23,843 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:23,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:24,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 01:44:24,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:24,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2002137535, now seen corresponding path program 4 times [2023-08-04 01:44:24,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:24,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14568015] [2023-08-04 01:44:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14568015] [2023-08-04 01:44:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14568015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328890101] [2023-08-04 01:44:24,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 01:44:24,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:24,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:24,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 01:44:24,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 01:44:24,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 01:44:24,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 01:44:24,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:24,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:44:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 01:44:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328890101] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:44:24,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:44:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-04 01:44:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201390697] [2023-08-04 01:44:24,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:44:24,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-04 01:44:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-04 01:44:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-08-04 01:44:24,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2023-08-04 01:44:24,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 147 transitions, 2154 flow. Second operand has 26 states, 26 states have (on average 84.88461538461539) internal successors, (2207), 26 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:24,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:24,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2023-08-04 01:44:24,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:28,637 INFO L124 PetriNetUnfolderBase]: 23304/30079 cut-off events. [2023-08-04 01:44:28,637 INFO L125 PetriNetUnfolderBase]: For 673608/673608 co-relation queries the response was YES. [2023-08-04 01:44:28,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195163 conditions, 30079 events. 23304/30079 cut-off events. For 673608/673608 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 143040 event pairs, 811 based on Foata normal form. 192/30261 useless extension candidates. Maximal degree in co-relation 190347. Up to 5063 conditions per place. [2023-08-04 01:44:28,901 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 348 selfloop transitions, 133 changer transitions 0/483 dead transitions. [2023-08-04 01:44:28,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 483 transitions, 6158 flow [2023-08-04 01:44:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-04 01:44:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-04 01:44:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2720 transitions. [2023-08-04 01:44:28,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2023-08-04 01:44:28,905 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2720 transitions. [2023-08-04 01:44:28,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2720 transitions. [2023-08-04 01:44:28,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:28,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2720 transitions. [2023-08-04 01:44:28,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:28,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:28,917 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:28,917 INFO L175 Difference]: Start difference. First operand has 135 places, 147 transitions, 2154 flow. Second operand 28 states and 2720 transitions. [2023-08-04 01:44:28,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 483 transitions, 6158 flow [2023-08-04 01:44:34,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 483 transitions, 5388 flow, removed 328 selfloop flow, removed 11 redundant places. [2023-08-04 01:44:34,857 INFO L231 Difference]: Finished difference. Result has 159 places, 169 transitions, 2420 flow [2023-08-04 01:44:34,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2420, PETRI_PLACES=159, PETRI_TRANSITIONS=169} [2023-08-04 01:44:34,857 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2023-08-04 01:44:34,857 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 169 transitions, 2420 flow [2023-08-04 01:44:34,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 84.88461538461539) internal successors, (2207), 26 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:34,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:44:34,859 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:44:34,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-04 01:44:35,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 01:44:35,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:44:35,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:44:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1518297465, now seen corresponding path program 5 times [2023-08-04 01:44:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:44:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596169654] [2023-08-04 01:44:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:44:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:44:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:44:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:44:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:44:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596169654] [2023-08-04 01:44:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596169654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:44:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223209658] [2023-08-04 01:44:35,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-04 01:44:35,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:44:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:44:35,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:44:35,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-04 01:44:35,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-04 01:44:35,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 01:44:35,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-04 01:44:35,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:44:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:44:35,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:44:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223209658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:44:35,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:44:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-04 01:44:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837037043] [2023-08-04 01:44:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:44:35,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 01:44:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:44:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 01:44:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-04 01:44:35,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 01:44:35,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 169 transitions, 2420 flow. Second operand has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:35,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:44:35,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 01:44:35,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:44:44,657 INFO L124 PetriNetUnfolderBase]: 60216/75689 cut-off events. [2023-08-04 01:44:44,657 INFO L125 PetriNetUnfolderBase]: For 2540719/2540719 co-relation queries the response was YES. [2023-08-04 01:44:45,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531509 conditions, 75689 events. 60216/75689 cut-off events. For 2540719/2540719 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 386600 event pairs, 3647 based on Foata normal form. 2156/77840 useless extension candidates. Maximal degree in co-relation 531016. Up to 29158 conditions per place. [2023-08-04 01:44:45,567 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 899 selfloop transitions, 117 changer transitions 0/1018 dead transitions. [2023-08-04 01:44:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1018 transitions, 16996 flow [2023-08-04 01:44:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 01:44:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 01:44:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 852 transitions. [2023-08-04 01:44:45,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5605263157894737 [2023-08-04 01:44:45,569 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 852 transitions. [2023-08-04 01:44:45,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 852 transitions. [2023-08-04 01:44:45,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:44:45,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 852 transitions. [2023-08-04 01:44:45,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.5) internal successors, (852), 8 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:45,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:45,572 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:44:45,572 INFO L175 Difference]: Start difference. First operand has 159 places, 169 transitions, 2420 flow. Second operand 8 states and 852 transitions. [2023-08-04 01:44:45,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1018 transitions, 16996 flow [2023-08-04 01:45:31,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 1018 transitions, 13230 flow, removed 1356 selfloop flow, removed 19 redundant places. [2023-08-04 01:45:31,173 INFO L231 Difference]: Finished difference. Result has 147 places, 258 transitions, 2988 flow [2023-08-04 01:45:31,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2988, PETRI_PLACES=147, PETRI_TRANSITIONS=258} [2023-08-04 01:45:31,173 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 113 predicate places. [2023-08-04 01:45:31,173 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 258 transitions, 2988 flow [2023-08-04 01:45:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:45:31,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:45:31,174 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:45:31,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-04 01:45:31,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-04 01:45:31,375 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:45:31,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:45:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1067178076, now seen corresponding path program 1 times [2023-08-04 01:45:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:45:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405700669] [2023-08-04 01:45:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:45:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:45:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:45:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:45:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:45:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405700669] [2023-08-04 01:45:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405700669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:45:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486743356] [2023-08-04 01:45:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:45:31,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:45:31,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:45:31,452 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:45:31,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-04 01:45:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:45:31,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-04 01:45:31,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:45:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:45:31,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:45:31,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486743356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:45:31,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:45:31,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-04 01:45:31,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983376908] [2023-08-04 01:45:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:45:31,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 01:45:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:45:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 01:45:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-04 01:45:31,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2023-08-04 01:45:31,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 258 transitions, 2988 flow. Second operand has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:45:31,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:45:31,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2023-08-04 01:45:31,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:45:55,796 INFO L124 PetriNetUnfolderBase]: 157885/194477 cut-off events. [2023-08-04 01:45:55,796 INFO L125 PetriNetUnfolderBase]: For 6135852/6135852 co-relation queries the response was YES. [2023-08-04 01:45:57,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349110 conditions, 194477 events. 157885/194477 cut-off events. For 6135852/6135852 co-relation queries the response was YES. Maximal size of possible extension queue 4663. Compared 1006863 event pairs, 5821 based on Foata normal form. 5792/200259 useless extension candidates. Maximal degree in co-relation 1303906. Up to 79872 conditions per place. [2023-08-04 01:45:58,309 INFO L140 encePairwiseOnDemand]: 187/190 looper letters, 1183 selfloop transitions, 116 changer transitions 102/1403 dead transitions. [2023-08-04 01:45:58,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1403 transitions, 19448 flow [2023-08-04 01:45:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 01:45:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 01:45:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 838 transitions. [2023-08-04 01:45:58,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513157894736842 [2023-08-04 01:45:58,310 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 838 transitions. [2023-08-04 01:45:58,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 838 transitions. [2023-08-04 01:45:58,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:45:58,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 838 transitions. [2023-08-04 01:45:58,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.75) internal successors, (838), 8 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:45:58,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:45:58,314 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:45:58,314 INFO L175 Difference]: Start difference. First operand has 147 places, 258 transitions, 2988 flow. Second operand 8 states and 838 transitions. [2023-08-04 01:45:58,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1403 transitions, 19448 flow [2023-08-04 01:48:34,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 1403 transitions, 18339 flow, removed 551 selfloop flow, removed 1 redundant places. [2023-08-04 01:48:34,049 INFO L231 Difference]: Finished difference. Result has 153 places, 345 transitions, 3915 flow [2023-08-04 01:48:34,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3915, PETRI_PLACES=153, PETRI_TRANSITIONS=345} [2023-08-04 01:48:34,050 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 119 predicate places. [2023-08-04 01:48:34,050 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 345 transitions, 3915 flow [2023-08-04 01:48:34,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:48:34,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:48:34,050 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:48:34,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-04 01:48:34,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:48:34,251 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:48:34,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:48:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1584042995, now seen corresponding path program 1 times [2023-08-04 01:48:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:48:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019711389] [2023-08-04 01:48:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:48:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:48:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:48:34,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:48:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:48:34,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:48:34,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:48:34,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 01:48:34,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-04 01:48:34,292 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:48:34,293 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-04 01:48:34,295 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:48:34,295 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:48:34,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:48:34 BasicIcfg [2023-08-04 01:48:34,351 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:48:34,352 INFO L158 Benchmark]: Toolchain (without parser) took 278105.50ms. Allocated memory was 478.2MB in the beginning and 14.2GB in the end (delta: 13.7GB). Free memory was 432.7MB in the beginning and 9.6GB in the end (delta: -9.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-08-04 01:48:34,352 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory was 307.5MB in the beginning and 307.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:48:34,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.04ms. Allocated memory is still 478.2MB. Free memory was 432.7MB in the beginning and 413.1MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 01:48:34,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.32ms. Allocated memory is still 478.2MB. Free memory was 413.1MB in the beginning and 411.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:48:34,352 INFO L158 Benchmark]: Boogie Preprocessor took 22.74ms. Allocated memory is still 478.2MB. Free memory was 411.0MB in the beginning and 409.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:48:34,353 INFO L158 Benchmark]: RCFGBuilder took 338.89ms. Allocated memory is still 478.2MB. Free memory was 409.6MB in the beginning and 395.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 01:48:34,353 INFO L158 Benchmark]: TraceAbstraction took 277268.43ms. Allocated memory was 478.2MB in the beginning and 14.2GB in the end (delta: 13.7GB). Free memory was 394.9MB in the beginning and 9.6GB in the end (delta: -9.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-08-04 01:48:34,354 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory was 307.5MB in the beginning and 307.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 437.04ms. Allocated memory is still 478.2MB. Free memory was 432.7MB in the beginning and 413.1MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.32ms. Allocated memory is still 478.2MB. Free memory was 413.1MB in the beginning and 411.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.74ms. Allocated memory is still 478.2MB. Free memory was 411.0MB in the beginning and 409.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 338.89ms. Allocated memory is still 478.2MB. Free memory was 409.6MB in the beginning and 395.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 277268.43ms. Allocated memory was 478.2MB in the beginning and 14.2GB in the end (delta: 13.7GB). Free memory was 394.9MB in the beginning and 9.6GB in the end (delta: -9.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 78 PlacesBefore, 22 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1694 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 1481 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1302, independent: 1275, independent conditional: 0, independent unconditional: 1275, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 895, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1302, independent: 394, independent conditional: 0, independent unconditional: 394, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 895, unknown conditional: 0, unknown unconditional: 895] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 102 PlacesBefore, 34 PlacesAfterwards, 104 TransitionsBefore, 30 TransitionsAfterwards, 4444 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 4064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3532, independent: 3496, independent conditional: 0, independent unconditional: 3496, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2267, independent: 2249, independent conditional: 0, independent unconditional: 2249, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3532, independent: 1247, independent conditional: 0, independent unconditional: 1247, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 2267, unknown conditional: 0, unknown unconditional: 2267] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 102 PlacesBefore, 34 PlacesAfterwards, 104 TransitionsBefore, 30 TransitionsAfterwards, 4444 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 4064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3526, independent: 3490, independent conditional: 0, independent unconditional: 3490, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2267, independent: 2250, independent conditional: 0, independent unconditional: 2250, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3526, independent: 1240, independent conditional: 0, independent unconditional: 1240, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 2267, unknown conditional: 0, unknown unconditional: 2267] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1[2], id2[2]; [L713] 0 int asdf=0; VAL [\old(argc)=51, argc=51, argv={50:49}, argv={50:49}, asdf=0, i=3, id1={5:0}, id2={3:0}, j=6] [L713] COND TRUE 0 asdf<2 [L713] FCALL, FORK 0 pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0))=9] [L713] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, i=3, id1={5:0}, id2={3:0}, j=6] [L713] COND TRUE 0 asdf<2 [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L713] FCALL, FORK 0 pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, i=7, id1={5:0}, id2={3:0}, j=6, k=1, pthread_create(&id1[asdf], ((void *)0), t1, ((void *)0))=10] [L713] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L713] COND FALSE 0 !(asdf<2) [L714] 0 int asdf=0; VAL [\old(argc)=51, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L714] COND TRUE 0 asdf<2 [L714] FCALL, FORK 0 pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=0, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1, pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0))=11] [L714] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, asdf=2, i=7, id1={5:0}, id2={3:0}, j=6, k=1] [L714] COND TRUE 0 asdf<2 [L704] 3 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L714] FCALL, FORK 0 pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=1, asdf=2, i=7, id1={5:0}, id2={3:0}, j=8, k=1, k=1, pthread_create(&id2[asdf], ((void *)0), t2, ((void *)0))=12] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 3 k < 5 [L706] 3 j = i + 1 [L704] 3 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=0, k=5] [L714] 0 asdf++ VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, i=15, id1={5:0}, id2={3:0}, j=16, k=0, k=5] [L696] COND TRUE 2 k < 5 [L698] 2 i = j + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=1, k=5] [L714] COND FALSE 0 !(asdf<2) [L716] 0 int condI = i > (2*5 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, condI=1, i=17, id1={5:0}, id2={3:0}, j=16, k=1, k=5] [L719] 0 int condJ = j > (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={50:49}, argv={50:49}, asdf=2, asdf=2, condI=1, condJ=0, i=17, id1={5:0}, id2={3:0}, j=16, k=1, k=5] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 94 locations, 3 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: 2.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 326 IncrementalHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 1 mSDtfsCounter, 326 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=1, InterpolantAutomatonStates: 17, 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, 0.4s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 381 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 66/79 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 1 thread instances CFG has 7 procedures, 114 locations, 3 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: 270.5s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 262.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3092 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2985 mSDsluCounter, 370 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 362 mSDsCounter, 389 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3975 IncrementalHoareTripleChecker+Invalid, 4364 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 389 mSolverCounterUnsat, 8 mSDtfsCounter, 3975 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 522 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3915occurred in iteration=14, InterpolantAutomatonStates: 137, 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, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 592 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 665 ConstructedInterpolants, 0 QuantifiedInterpolants, 2027 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1700 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 348/477 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! [2023-08-04 01:48:34,379 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...