/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi004_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:46:45,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:46:45,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:46:45,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:46:45,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:46:45,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:46:45,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:46:45,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:46:45,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:46:45,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:46:45,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:46:45,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:46:45,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:46:45,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:46:45,875 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:46:45,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:46:45,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:46:45,875 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:46:45,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:46:45,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:46:45,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:46:45,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:46:45,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:46:45,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:46:45,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:46:45,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:46:45,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:46:45,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:46:45,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:46:45,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:46:45,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:46:45,879 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:46:45,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:46:45,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:46:45,880 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:46:45,880 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:46:46,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:46:46,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:46:46,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:46:46,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:46:46,094 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:46:46,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi004_bound2.i [2023-08-03 17:46:47,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:46:47,268 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:46:47,268 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi004_bound2.i [2023-08-03 17:46:47,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4efb381/ce03d6b7c1c14ec4bbccb6b23f809f38/FLAG14970d158 [2023-08-03 17:46:47,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4efb381/ce03d6b7c1c14ec4bbccb6b23f809f38 [2023-08-03 17:46:47,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:46:47,291 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:46:47,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:46:47,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:46:47,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:46:47,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5212352a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47, skipping insertion in model container [2023-08-03 17:46:47,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,325 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:46:47,434 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi004_bound2.i[983,996] [2023-08-03 17:46:47,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:46:47,552 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:46:47,560 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi004_bound2.i[983,996] [2023-08-03 17:46:47,565 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:46:47,566 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:46:47,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:46:47,611 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:46:47,612 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:46:47,616 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:46:47,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47 WrapperNode [2023-08-03 17:46:47,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:46:47,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:46:47,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:46:47,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:46:47,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,671 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2023-08-03 17:46:47,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:46:47,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:46:47,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:46:47,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:46:47,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:46:47,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:46:47,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:46:47,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:46:47,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (1/1) ... [2023-08-03 17:46:47,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:46:47,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:47,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:46:47,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:46:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:46:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:46:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:46:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:46:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:46:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:46:47,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:46:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:46:47,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:46:47,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:46:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:46:47,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:46:47,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:46:47,777 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:46:47,871 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:46:47,872 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:46:48,047 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:46:48,125 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:46:48,126 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 17:46:48,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:46:48 BoogieIcfgContainer [2023-08-03 17:46:48,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:46:48,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:46:48,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:46:48,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:46:48,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:46:47" (1/3) ... [2023-08-03 17:46:48,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdc5f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:46:48, skipping insertion in model container [2023-08-03 17:46:48,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:47" (2/3) ... [2023-08-03 17:46:48,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdc5f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:46:48, skipping insertion in model container [2023-08-03 17:46:48,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:46:48" (3/3) ... [2023-08-03 17:46:48,139 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi004_bound2.i [2023-08-03 17:46:48,145 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:46:48,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:46:48,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:46:48,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:46:48,218 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:46:48,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:48,313 INFO L124 PetriNetUnfolderBase]: 14/223 cut-off events. [2023-08-03 17:46:48,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:48,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 223 events. 14/223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 632 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-03 17:46:48,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:48,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:48,322 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:46:48,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:48,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:48,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 220 flow [2023-08-03 17:46:48,366 INFO L124 PetriNetUnfolderBase]: 14/223 cut-off events. [2023-08-03 17:46:48,366 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:48,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 223 events. 14/223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 632 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-03 17:46:48,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 1484 [2023-08-03 17:46:50,684 INFO L134 LiptonReduction]: Checked pairs total: 3871 [2023-08-03 17:46:50,684 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 17:46:50,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:46:50,696 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;@76025b13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:46:50,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 17:46:50,699 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:46:50,699 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-03 17:46:50,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:50,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:50,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:46:50,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:46:50,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 442038206, now seen corresponding path program 1 times [2023-08-03 17:46:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321461245] [2023-08-03 17:46:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321461245] [2023-08-03 17:46:50,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321461245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:50,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:50,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:46:50,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893785392] [2023-08-03 17:46:50,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:50,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 198 [2023-08-03 17:46:50,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:50,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:50,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 198 [2023-08-03 17:46:50,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:51,077 INFO L124 PetriNetUnfolderBase]: 352/666 cut-off events. [2023-08-03 17:46:51,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:51,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 666 events. 352/666 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3094 event pairs, 160 based on Foata normal form. 28/570 useless extension candidates. Maximal degree in co-relation 1290. Up to 609 conditions per place. [2023-08-03 17:46:51,085 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 17:46:51,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 120 flow [2023-08-03 17:46:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-03 17:46:51,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49663299663299665 [2023-08-03 17:46:51,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-03 17:46:51,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-03 17:46:51,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:51,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-03 17:46:51,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:51,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:51,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:51,119 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 62 flow. Second operand 3 states and 295 transitions. [2023-08-03 17:46:51,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 120 flow [2023-08-03 17:46:51,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:46:51,122 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 68 flow [2023-08-03 17:46:51,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-03 17:46:51,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-03 17:46:51,128 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 68 flow [2023-08-03 17:46:51,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:51,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:51,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:46:51,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:46:51,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:46:51,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:51,130 INFO L85 PathProgramCache]: Analyzing trace with hash 828869865, now seen corresponding path program 1 times [2023-08-03 17:46:51,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:51,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138352015] [2023-08-03 17:46:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:51,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:46:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:51,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:46:51,212 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:46:51,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 17:46:51,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 17:46:51,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 17:46:51,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 17:46:51,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 17:46:51,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:46:51,215 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:46:51,221 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:46:51,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:46:51,243 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:46:51,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 123 transitions, 270 flow [2023-08-03 17:46:51,277 INFO L124 PetriNetUnfolderBase]: 30/463 cut-off events. [2023-08-03 17:46:51,278 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:46:51,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 463 events. 30/463 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2020 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:46:51,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 123 transitions, 270 flow [2023-08-03 17:46:51,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 123 transitions, 270 flow [2023-08-03 17:46:51,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:46:51,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 123 transitions, 270 flow [2023-08-03 17:46:51,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 123 transitions, 270 flow [2023-08-03 17:46:51,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 123 transitions, 270 flow [2023-08-03 17:46:51,315 INFO L124 PetriNetUnfolderBase]: 30/463 cut-off events. [2023-08-03 17:46:51,315 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:46:51,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 463 events. 30/463 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2020 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:46:51,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 3536 [2023-08-03 17:46:53,282 INFO L134 LiptonReduction]: Checked pairs total: 11938 [2023-08-03 17:46:53,285 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 17:46:53,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:46:53,291 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;@76025b13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:46:53,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:46:53,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:46:53,295 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-03 17:46:53,295 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:53,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:53,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:46:53,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:53,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash 669193367, now seen corresponding path program 1 times [2023-08-03 17:46:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:53,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338895817] [2023-08-03 17:46:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:53,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:53,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:53,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338895817] [2023-08-03 17:46:53,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338895817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:53,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:53,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:46:53,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856845534] [2023-08-03 17:46:53,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:53,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:53,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:53,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:53,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:53,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-08-03 17:46:53,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:53,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:53,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-08-03 17:46:53,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:55,220 INFO L124 PetriNetUnfolderBase]: 15012/23311 cut-off events. [2023-08-03 17:46:55,220 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2023-08-03 17:46:55,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44473 conditions, 23311 events. 15012/23311 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 163068 event pairs, 10800 based on Foata normal form. 620/19743 useless extension candidates. Maximal degree in co-relation 9780. Up to 20629 conditions per place. [2023-08-03 17:46:55,351 INFO L140 encePairwiseOnDemand]: 216/220 looper letters, 33 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-03 17:46:55,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 184 flow [2023-08-03 17:46:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-03 17:46:55,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-08-03 17:46:55,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-03 17:46:55,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-03 17:46:55,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:55,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-03 17:46:55,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,358 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 106 flow. Second operand 3 states and 340 transitions. [2023-08-03 17:46:55,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 184 flow [2023-08-03 17:46:55,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 180 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 17:46:55,360 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 112 flow [2023-08-03 17:46:55,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-03 17:46:55,361 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-03 17:46:55,361 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 112 flow [2023-08-03 17:46:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:55,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:55,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:46:55,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:55,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1854309580, now seen corresponding path program 1 times [2023-08-03 17:46:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813463178] [2023-08-03 17:46:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813463178] [2023-08-03 17:46:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813463178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:46:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094132622] [2023-08-03 17:46:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:55,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:55,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:55,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:46:55,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 17:46:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:55,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:46:55,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:46:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:55,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:46:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094132622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:46:55,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:46:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:46:55,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007772832] [2023-08-03 17:46:55,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:46:55,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:46:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:46:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:46:55,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 220 [2023-08-03 17:46:55,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:55,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 220 [2023-08-03 17:46:55,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:57,193 INFO L124 PetriNetUnfolderBase]: 12690/19417 cut-off events. [2023-08-03 17:46:57,193 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-08-03 17:46:57,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37020 conditions, 19417 events. 12690/19417 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 129411 event pairs, 5964 based on Foata normal form. 4/16109 useless extension candidates. Maximal degree in co-relation 9808. Up to 17113 conditions per place. [2023-08-03 17:46:57,273 INFO L140 encePairwiseOnDemand]: 216/220 looper letters, 38 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2023-08-03 17:46:57,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 218 flow [2023-08-03 17:46:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:46:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:46:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2023-08-03 17:46:57,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034090909090909 [2023-08-03 17:46:57,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2023-08-03 17:46:57,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2023-08-03 17:46:57,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:57,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2023-08-03 17:46:57,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 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) [2023-08-03 17:46:57,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:57,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:57,278 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 112 flow. Second operand 4 states and 443 transitions. [2023-08-03 17:46:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 218 flow [2023-08-03 17:46:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:46:57,280 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 130 flow [2023-08-03 17:46:57,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-08-03 17:46:57,280 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-08-03 17:46:57,281 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 130 flow [2023-08-03 17:46:57,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:57,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:57,281 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:46:57,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 17:46:57,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:57,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:57,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -245569354, now seen corresponding path program 1 times [2023-08-03 17:46:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:57,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130295686] [2023-08-03 17:46:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:57,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130295686] [2023-08-03 17:46:57,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130295686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:46:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47353896] [2023-08-03 17:46:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:57,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:57,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:57,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:46:57,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 17:46:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:57,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:46:57,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:46:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:57,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:46:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47353896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:46:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:46:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850091548] [2023-08-03 17:46:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:57,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:46:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:46:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:46:57,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 220 [2023-08-03 17:46:57,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:57,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:57,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 220 [2023-08-03 17:46:57,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:59,282 INFO L124 PetriNetUnfolderBase]: 12666/19373 cut-off events. [2023-08-03 17:46:59,282 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2023-08-03 17:46:59,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36988 conditions, 19373 events. 12666/19373 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 129156 event pairs, 5952 based on Foata normal form. 16/16077 useless extension candidates. Maximal degree in co-relation 9785. Up to 17112 conditions per place. [2023-08-03 17:46:59,336 INFO L140 encePairwiseOnDemand]: 217/220 looper letters, 38 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-03 17:46:59,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 224 flow [2023-08-03 17:46:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:46:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:46:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-08-03 17:46:59,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49272727272727274 [2023-08-03 17:46:59,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-08-03 17:46:59,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-08-03 17:46:59,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:59,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-08-03 17:46:59,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:59,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:59,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:59,341 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 130 flow. Second operand 5 states and 542 transitions. [2023-08-03 17:46:59,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 224 flow [2023-08-03 17:46:59,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 217 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 17:46:59,343 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 119 flow [2023-08-03 17:46:59,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-03 17:46:59,343 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-08-03 17:46:59,343 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 119 flow [2023-08-03 17:46:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:59,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:59,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:59,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 17:46:59,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:59,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:59,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash 230886850, now seen corresponding path program 1 times [2023-08-03 17:46:59,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:59,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274787598] [2023-08-03 17:46:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:46:59,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274787598] [2023-08-03 17:46:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274787598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:46:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600295649] [2023-08-03 17:46:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:59,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:59,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 220 [2023-08-03 17:46:59,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:59,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:59,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 220 [2023-08-03 17:46:59,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:47:00,704 INFO L124 PetriNetUnfolderBase]: 10842/16973 cut-off events. [2023-08-03 17:47:00,704 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2023-08-03 17:47:00,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32079 conditions, 16973 events. 10842/16973 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 113939 event pairs, 2106 based on Foata normal form. 0/14237 useless extension candidates. Maximal degree in co-relation 8485. Up to 13633 conditions per place. [2023-08-03 17:47:00,755 INFO L140 encePairwiseOnDemand]: 215/220 looper letters, 45 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-03 17:47:00,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 254 flow [2023-08-03 17:47:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:47:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:47:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-08-03 17:47:00,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546969696969697 [2023-08-03 17:47:00,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-08-03 17:47:00,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-08-03 17:47:00,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:47:00,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-08-03 17:47:00,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:00,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:00,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:00,761 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 119 flow. Second operand 3 states and 361 transitions. [2023-08-03 17:47:00,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 254 flow [2023-08-03 17:47:00,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 249 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:47:00,764 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 135 flow [2023-08-03 17:47:00,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-08-03 17:47:00,766 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-08-03 17:47:00,766 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 135 flow [2023-08-03 17:47:00,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:00,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:00,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:47:00,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 17:47:00,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:47:00,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1432570059, now seen corresponding path program 1 times [2023-08-03 17:47:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092807200] [2023-08-03 17:47:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:47:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:47:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:47:00,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092807200] [2023-08-03 17:47:00,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092807200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:47:00,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:47:00,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 17:47:00,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185095858] [2023-08-03 17:47:00,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:47:00,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:47:00,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:47:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:47:00,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:47:00,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-08-03 17:47:00,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:00,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:47:00,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-08-03 17:47:00,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:47:01,938 INFO L124 PetriNetUnfolderBase]: 10698/16013 cut-off events. [2023-08-03 17:47:01,938 INFO L125 PetriNetUnfolderBase]: For 1286/1286 co-relation queries the response was YES. [2023-08-03 17:47:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33516 conditions, 16013 events. 10698/16013 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 104331 event pairs, 8154 based on Foata normal form. 0/13573 useless extension candidates. Maximal degree in co-relation 8833. Up to 14281 conditions per place. [2023-08-03 17:47:02,004 INFO L140 encePairwiseOnDemand]: 216/220 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 17:47:02,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 248 flow [2023-08-03 17:47:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:47:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:47:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-03 17:47:02,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242424242424243 [2023-08-03 17:47:02,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-03 17:47:02,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-03 17:47:02,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:47:02,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-03 17:47:02,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:02,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:02,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:02,018 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 135 flow. Second operand 3 states and 346 transitions. [2023-08-03 17:47:02,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 248 flow [2023-08-03 17:47:02,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:47:02,026 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 146 flow [2023-08-03 17:47:02,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-03 17:47:02,027 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-08-03 17:47:02,027 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 146 flow [2023-08-03 17:47:02,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:02,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:02,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:47:02,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 17:47:02,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:47:02,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash 597068791, now seen corresponding path program 1 times [2023-08-03 17:47:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:02,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455791804] [2023-08-03 17:47:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:02,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:47:02,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:47:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:47:02,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:47:02,056 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:47:02,056 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 17:47:02,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:47:02,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:47:02,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:47:02,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:47:02,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:47:02,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 17:47:02,057 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 17:47:02,060 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:47:02,060 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:47:02,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:47:02 BasicIcfg [2023-08-03 17:47:02,116 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:47:02,116 INFO L158 Benchmark]: Toolchain (without parser) took 14825.56ms. Allocated memory was 348.1MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 313.4MB in the beginning and 898.9MB in the end (delta: -585.5MB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-03 17:47:02,116 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 214.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:47:02,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.23ms. Allocated memory is still 348.1MB. Free memory was 313.0MB in the beginning and 290.6MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:47:02,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.91ms. Allocated memory is still 348.1MB. Free memory was 290.6MB in the beginning and 288.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:47:02,117 INFO L158 Benchmark]: Boogie Preprocessor took 23.75ms. Allocated memory is still 348.1MB. Free memory was 288.2MB in the beginning and 286.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:47:02,117 INFO L158 Benchmark]: RCFGBuilder took 424.81ms. Allocated memory is still 348.1MB. Free memory was 286.1MB in the beginning and 255.5MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-03 17:47:02,117 INFO L158 Benchmark]: TraceAbstraction took 13986.74ms. Allocated memory was 348.1MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 254.7MB in the beginning and 898.9MB in the end (delta: -644.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-03 17:47:02,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 214.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 326.23ms. Allocated memory is still 348.1MB. Free memory was 313.0MB in the beginning and 290.6MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.91ms. Allocated memory is still 348.1MB. Free memory was 290.6MB in the beginning and 288.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.75ms. Allocated memory is still 348.1MB. Free memory was 288.2MB in the beginning and 286.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 424.81ms. Allocated memory is still 348.1MB. Free memory was 286.1MB in the beginning and 255.5MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 13986.74ms. Allocated memory was 348.1MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 254.7MB in the beginning and 898.9MB in the end (delta: -644.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 106 PlacesBefore, 30 PlacesAfterwards, 105 TransitionsBefore, 26 TransitionsAfterwards, 1484 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 3871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1827, independent: 1682, independent conditional: 0, independent unconditional: 1682, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 797, independent: 775, independent conditional: 0, independent unconditional: 775, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1827, independent: 907, independent conditional: 0, independent unconditional: 907, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 128 PlacesBefore, 49 PlacesAfterwards, 123 TransitionsBefore, 41 TransitionsAfterwards, 3536 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 11938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4952, independent: 4680, independent conditional: 0, independent unconditional: 4680, dependent: 272, dependent conditional: 0, dependent unconditional: 272, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1736, independent: 1706, independent conditional: 0, independent unconditional: 1706, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4952, independent: 2974, independent conditional: 0, independent unconditional: 2974, dependent: 242, dependent conditional: 0, dependent unconditional: 242, unknown: 1736, unknown conditional: 0, unknown unconditional: 1736] , Statistics on independence cache: Total cache size (in pairs): 213, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff1_thd0; [L728] 0 _Bool y$r_buff1_thd1; [L729] 0 _Bool y$r_buff1_thd2; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L737] 0 int z = 0; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L815] 0 pthread_t t1649[2]; [L816] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1649={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t1649[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1649[asdf], ((void *)0), P0, ((void *)0))=-1, t1649={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1649={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t1649[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1649[asdf], ((void *)0), P0, ((void *)0))=0, t1649={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1649={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] COND FALSE 0 !(asdf<2) [L817] 0 pthread_t t1650[2]; [L818] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1649={5:0}, t1650={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L818] COND TRUE 0 asdf<2 [L818] FCALL, FORK 0 pthread_create(&t1650[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1650[asdf], ((void *)0), P1, ((void *)0))=1, t1649={5:0}, t1650={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L773] 3 y$w_buff1 = y$w_buff0 [L774] 3 y$w_buff0 = 1 [L775] 3 y$w_buff1_used = y$w_buff0_used [L776] 3 y$w_buff0_used = (_Bool)1 [L777] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 3 !(!expression) [L777] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L778] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L779] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L780] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L781] 3 y$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L818] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1649={5:0}, t1650={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L818] COND TRUE 0 asdf<2 [L818] FCALL, FORK 0 pthread_create(&t1650[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1650[asdf], ((void *)0), P1, ((void *)0))=2, t1649={5:0}, t1650={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L773] 4 y$w_buff1 = y$w_buff0 [L774] 4 y$w_buff0 = 1 [L775] 4 y$w_buff1_used = y$w_buff0_used [L776] 4 y$w_buff0_used = (_Bool)1 [L777] CALL 4 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND TRUE 4 !expression [L19] 4 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=0, z=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 5 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: 3.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 138 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 346 IncrementalHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 9 mSDtfsCounter, 346 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 23/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:47:02,134 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...