/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_mix016.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:09:34,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:09:34,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:09:34,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:09:34,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:09:34,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:09:34,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:09:34,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:09:34,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:09:34,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:09:34,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:09:34,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:09:34,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:09:34,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:09:34,911 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:09:34,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:09:34,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:09:34,912 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:09:34,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:09:34,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:09:34,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:09:34,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:09:34,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:09:34,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:09:34,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:09:34,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:09:34,921 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:09:34,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:09:34,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:09:34,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:09:34,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:09:34,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:09:34,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:09:34,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:09:34,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:09:34,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:09:34,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:09:34,923 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:09:34,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:09:34,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:09:34,924 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:09:34,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:09:35,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:09:35,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:09:35,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:09:35,124 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:09:35,125 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:09:35,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix016.oepc_bound2.i [2023-08-03 17:09:36,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:09:36,481 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:09:36,482 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix016.oepc_bound2.i [2023-08-03 17:09:36,494 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc6fdb15/44b5c8d6460248a2a998c76605340282/FLAGc5975c220 [2023-08-03 17:09:36,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc6fdb15/44b5c8d6460248a2a998c76605340282 [2023-08-03 17:09:36,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:09:36,516 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:09:36,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:09:36,517 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:09:36,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:09:36,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:09:36" (1/1) ... [2023-08-03 17:09:36,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bf4bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:36, skipping insertion in model container [2023-08-03 17:09:36,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:09:36" (1/1) ... [2023-08-03 17:09:36,562 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:09:36,700 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_mix016.oepc_bound2.i[945,958] [2023-08-03 17:09:36,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:09:36,899 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:09:36,912 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_mix016.oepc_bound2.i[945,958] [2023-08-03 17:09:36,929 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:09:36,931 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:09:36,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:09:37,010 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:09:37,011 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:09:37,017 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:09:37,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37 WrapperNode [2023-08-03 17:09:37,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:09:37,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:09:37,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:09:37,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:09:37,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,094 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-08-03 17:09:37,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:09:37,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:09:37,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:09:37,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:09:37,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:09:37,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:09:37,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:09:37,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:09:37,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (1/1) ... [2023-08-03 17:09:37,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:09:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:09:37,184 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 17:09:37,202 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 17:09:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:09:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:09:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:09:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:09:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:09:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:09:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:09:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:09:37,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:09:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:09:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:09:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:09:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:09:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:09:37,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:09:37,228 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 17:09:37,393 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:09:37,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:09:37,728 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:09:37,842 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:09:37,842 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:09:37,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:09:37 BoogieIcfgContainer [2023-08-03 17:09:37,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:09:37,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:09:37,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:09:37,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:09:37,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:09:36" (1/3) ... [2023-08-03 17:09:37,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468814a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:09:37, skipping insertion in model container [2023-08-03 17:09:37,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:37" (2/3) ... [2023-08-03 17:09:37,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468814a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:09:37, skipping insertion in model container [2023-08-03 17:09:37,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:09:37" (3/3) ... [2023-08-03 17:09:37,852 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix016.oepc_bound2.i [2023-08-03 17:09:37,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:09:37,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:09:37,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:09:37,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:09:37,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:09:37,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 132 transitions, 279 flow [2023-08-03 17:09:38,063 INFO L124 PetriNetUnfolderBase]: 30/454 cut-off events. [2023-08-03 17:09:38,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:38,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 30/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2017 event pairs, 0 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-03 17:09:38,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 132 transitions, 279 flow [2023-08-03 17:09:38,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 132 transitions, 279 flow [2023-08-03 17:09:38,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:09:38,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 132 transitions, 279 flow [2023-08-03 17:09:38,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 132 transitions, 279 flow [2023-08-03 17:09:38,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 132 transitions, 279 flow [2023-08-03 17:09:38,172 INFO L124 PetriNetUnfolderBase]: 30/454 cut-off events. [2023-08-03 17:09:38,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:38,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 30/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2017 event pairs, 0 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-03 17:09:38,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 2836 [2023-08-03 17:09:41,417 INFO L134 LiptonReduction]: Checked pairs total: 7333 [2023-08-03 17:09:41,417 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-03 17:09:41,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:09:41,434 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;@4b190294, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:09:41,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:09:41,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:09:41,438 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 17:09:41,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:41,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:09:41,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:09:41,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:09:41,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:09:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash 17567420, now seen corresponding path program 1 times [2023-08-03 17:09:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:09:41,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589881543] [2023-08-03 17:09:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:09:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:09:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:09:41,798 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 17:09:41,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:09:41,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589881543] [2023-08-03 17:09:41,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589881543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:09:41,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:09:41,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:09:41,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104899998] [2023-08-03 17:09:41,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:09:41,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:09:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:09:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:09:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:09:41,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 244 [2023-08-03 17:09:41,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 17:09:41,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:09:41,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 244 [2023-08-03 17:09:41,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:09:42,466 INFO L124 PetriNetUnfolderBase]: 2468/4244 cut-off events. [2023-08-03 17:09:42,466 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-03 17:09:42,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8199 conditions, 4244 events. 2468/4244 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 27207 event pairs, 650 based on Foata normal form. 150/3892 useless extension candidates. Maximal degree in co-relation 6917. Up to 2665 conditions per place. [2023-08-03 17:09:42,490 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 45 selfloop transitions, 2 changer transitions 4/57 dead transitions. [2023-08-03 17:09:42,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 237 flow [2023-08-03 17:09:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:09:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:09:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-03 17:09:42,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450819672131147 [2023-08-03 17:09:42,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-03 17:09:42,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-03 17:09:42,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:09:42,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-03 17:09:42,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 17:09:42,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 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 17:09:42,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 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 17:09:42,517 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 87 flow. Second operand 3 states and 399 transitions. [2023-08-03 17:09:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 237 flow [2023-08-03 17:09:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:09:42,522 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 83 flow [2023-08-03 17:09:42,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-03 17:09:42,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-03 17:09:42,529 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 83 flow [2023-08-03 17:09:42,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 17:09:42,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:09:42,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:09:42,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:09:42,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:09:42,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:09:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash -297501038, now seen corresponding path program 1 times [2023-08-03 17:09:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:09:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995495148] [2023-08-03 17:09:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:09:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:09:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:09:42,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:09:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:09:42,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:09:42,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:09:42,598 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:09:42,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:09:42,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:09:42,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:09:42,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:09:42,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:09:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:09:42,601 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:09:42,604 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:09:42,604 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:09:42,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:09:42,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 158 transitions, 352 flow [2023-08-03 17:09:42,800 INFO L124 PetriNetUnfolderBase]: 93/1397 cut-off events. [2023-08-03 17:09:42,800 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:09:42,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 1397 events. 93/1397 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9653 event pairs, 0 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 1011. Up to 54 conditions per place. [2023-08-03 17:09:42,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 158 transitions, 352 flow [2023-08-03 17:09:42,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 158 transitions, 352 flow [2023-08-03 17:09:42,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:09:42,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 158 transitions, 352 flow [2023-08-03 17:09:42,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 158 transitions, 352 flow [2023-08-03 17:09:42,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 158 transitions, 352 flow [2023-08-03 17:09:42,954 INFO L124 PetriNetUnfolderBase]: 93/1397 cut-off events. [2023-08-03 17:09:42,954 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:09:42,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 1397 events. 93/1397 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9653 event pairs, 0 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 1011. Up to 54 conditions per place. [2023-08-03 17:09:42,993 INFO L119 LiptonReduction]: Number of co-enabled transitions 6868 [2023-08-03 17:09:46,210 INFO L134 LiptonReduction]: Checked pairs total: 21460 [2023-08-03 17:09:46,211 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-03 17:09:46,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:09:46,214 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;@4b190294, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:09:46,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:09:46,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:09:46,217 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-03 17:09:46,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:46,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:09:46,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:09:46,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:09:46,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:09:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash 26844766, now seen corresponding path program 1 times [2023-08-03 17:09:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:09:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444877750] [2023-08-03 17:09:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:09:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:09:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:09:46,325 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 17:09:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:09:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444877750] [2023-08-03 17:09:46,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444877750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:09:46,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:09:46,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:09:46,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345622647] [2023-08-03 17:09:46,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:09:46,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:09:46,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:09:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:09:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:09:46,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-08-03 17:09:46,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 17:09:46,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:09:46,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-08-03 17:09:46,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:10:59,337 INFO L124 PetriNetUnfolderBase]: 633758/831346 cut-off events. [2023-08-03 17:10:59,337 INFO L125 PetriNetUnfolderBase]: For 9530/9530 co-relation queries the response was YES. [2023-08-03 17:11:01,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634849 conditions, 831346 events. 633758/831346 cut-off events. For 9530/9530 co-relation queries the response was YES. Maximal size of possible extension queue 20066. Compared 6237048 event pairs, 105182 based on Foata normal form. 17577/758783 useless extension candidates. Maximal degree in co-relation 1376703. Up to 729279 conditions per place. [2023-08-03 17:11:04,408 INFO L140 encePairwiseOnDemand]: 269/275 looper letters, 75 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-08-03 17:11:04,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 393 flow [2023-08-03 17:11:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:11:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:11:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-03 17:11:04,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793939393939394 [2023-08-03 17:11:04,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-03 17:11:04,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-03 17:11:04,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:11:04,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-03 17:11:04,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 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 17:11:04,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 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 17:11:04,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 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 17:11:04,416 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 148 flow. Second operand 3 states and 478 transitions. [2023-08-03 17:11:04,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 393 flow [2023-08-03 17:11:04,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 387 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:11:04,427 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 161 flow [2023-08-03 17:11:04,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-08-03 17:11:04,428 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-08-03 17:11:04,428 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 161 flow [2023-08-03 17:11:04,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 17:11:04,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:11:04,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:11:04,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:11:04,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:11:04,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:11:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1101590597, now seen corresponding path program 1 times [2023-08-03 17:11:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:11:04,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319435156] [2023-08-03 17:11:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:11:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:11:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:11:04,463 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 17:11:04,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:11:04,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319435156] [2023-08-03 17:11:04,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319435156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:11:04,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:11:04,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:11:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698737603] [2023-08-03 17:11:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:11:04,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:11:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:11:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:11:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:11:04,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-03 17:11:04,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 17:11:04,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:11:04,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-03 17:11:04,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:12:19,269 INFO L124 PetriNetUnfolderBase]: 618374/795867 cut-off events. [2023-08-03 17:12:19,269 INFO L125 PetriNetUnfolderBase]: For 61758/61758 co-relation queries the response was YES. [2023-08-03 17:12:21,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685054 conditions, 795867 events. 618374/795867 cut-off events. For 61758/61758 co-relation queries the response was YES. Maximal size of possible extension queue 18923. Compared 5519153 event pairs, 518026 based on Foata normal form. 0/703592 useless extension candidates. Maximal degree in co-relation 1109387. Up to 771849 conditions per place. [2023-08-03 17:12:24,536 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 48 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 17:12:24,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 274 flow [2023-08-03 17:12:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:12:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:12:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-03 17:12:24,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284848484848484 [2023-08-03 17:12:24,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-03 17:12:24,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-03 17:12:24,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:12:24,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-03 17:12:24,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 17:12:24,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 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 17:12:24,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 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 17:12:24,542 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 161 flow. Second operand 3 states and 436 transitions. [2023-08-03 17:12:24,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 274 flow [2023-08-03 17:12:24,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 62 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:12:24,568 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 170 flow [2023-08-03 17:12:24,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-08-03 17:12:24,570 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-03 17:12:24,570 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 170 flow [2023-08-03 17:12:24,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 17:12:24,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:12:24,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:12:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:12:24,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:12:24,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:12:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2052294482, now seen corresponding path program 1 times [2023-08-03 17:12:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:12:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000616355] [2023-08-03 17:12:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:12:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:12:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:12:24,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:12:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:12:24,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:12:24,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:12:24,624 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:12:24,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:12:24,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:12:24,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:12:24,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:12:24,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:12:24,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:12:24,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:12:24,631 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:12:24,635 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:12:24,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:12:24,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:12:24 BasicIcfg [2023-08-03 17:12:24,690 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:12:24,691 INFO L158 Benchmark]: Toolchain (without parser) took 168174.04ms. Allocated memory was 352.3MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 311.0MB in the beginning and 9.7GB in the end (delta: -9.4GB). Peak memory consumption was 6.2GB. Max. memory is 16.0GB. [2023-08-03 17:12:24,691 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 352.3MB. Free memory is still 305.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:12:24,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.93ms. Allocated memory is still 352.3MB. Free memory was 311.0MB in the beginning and 287.2MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:12:24,692 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.28ms. Allocated memory is still 352.3MB. Free memory was 287.2MB in the beginning and 284.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:12:24,692 INFO L158 Benchmark]: Boogie Preprocessor took 57.70ms. Allocated memory is still 352.3MB. Free memory was 284.5MB in the beginning and 282.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:12:24,698 INFO L158 Benchmark]: RCFGBuilder took 691.10ms. Allocated memory was 352.3MB in the beginning and 509.6MB in the end (delta: 157.3MB). Free memory was 282.4MB in the beginning and 467.9MB in the end (delta: -185.5MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-08-03 17:12:24,701 INFO L158 Benchmark]: TraceAbstraction took 166843.67ms. Allocated memory was 509.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 466.9MB in the beginning and 9.7GB in the end (delta: -9.3GB). Peak memory consumption was 6.2GB. Max. memory is 16.0GB. [2023-08-03 17:12:24,709 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 352.3MB. Free memory is still 305.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 500.93ms. Allocated memory is still 352.3MB. Free memory was 311.0MB in the beginning and 287.2MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.28ms. Allocated memory is still 352.3MB. Free memory was 287.2MB in the beginning and 284.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 57.70ms. Allocated memory is still 352.3MB. Free memory was 284.5MB in the beginning and 282.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 691.10ms. Allocated memory was 352.3MB in the beginning and 509.6MB in the end (delta: 157.3MB). Free memory was 282.4MB in the beginning and 467.9MB in the end (delta: -185.5MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * TraceAbstraction took 166843.67ms. Allocated memory was 509.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 466.9MB in the beginning and 9.7GB in the end (delta: -9.3GB). Peak memory consumption was 6.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 134 PlacesBefore, 42 PlacesAfterwards, 132 TransitionsBefore, 36 TransitionsAfterwards, 2836 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 112 TotalNumberOfCompositions, 7333 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3560, independent: 3383, independent conditional: 0, independent unconditional: 3383, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1508, independent: 1482, independent conditional: 0, independent unconditional: 1482, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3560, independent: 1901, independent conditional: 0, independent unconditional: 1901, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 1508, unknown conditional: 0, unknown unconditional: 1508] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 169, Positive conditional cache size: 0, Positive unconditional cache size: 169, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 166 PlacesBefore, 68 PlacesAfterwards, 158 TransitionsBefore, 56 TransitionsAfterwards, 6868 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 117 TotalNumberOfCompositions, 21460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7378, independent: 7055, independent conditional: 0, independent unconditional: 7055, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3334, independent: 3267, independent conditional: 0, independent unconditional: 3267, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7378, independent: 3788, independent conditional: 0, independent unconditional: 3788, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 3334, unknown conditional: 0, unknown unconditional: 3334] , Statistics on independence cache: Total cache size (in pairs): 359, Positive cache size: 322, Positive conditional cache size: 0, Positive unconditional cache size: 322, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L717] 0 int __unbuffered_p2_EBX = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L725] 0 int z = 0; [L726] 0 _Bool z$flush_delayed; [L727] 0 int z$mem_tmp; [L728] 0 _Bool z$r_buff0_thd0; [L729] 0 _Bool z$r_buff0_thd1; [L730] 0 _Bool z$r_buff0_thd2; [L731] 0 _Bool z$r_buff0_thd3; [L732] 0 _Bool z$r_buff1_thd0; [L733] 0 _Bool z$r_buff1_thd1; [L734] 0 _Bool z$r_buff1_thd2; [L735] 0 _Bool z$r_buff1_thd3; [L736] 0 _Bool z$read_delayed; [L737] 0 int *z$read_delayed_var; [L738] 0 int z$w_buff0; [L739] 0 _Bool z$w_buff0_used; [L740] 0 int z$w_buff1; [L741] 0 _Bool z$w_buff1_used; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L840] 0 pthread_t t409[2]; [L841] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t409={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L841] COND TRUE 0 asdf<2 [L841] FCALL, FORK 0 pthread_create(&t409[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t409[asdf], ((void *)0), P0, ((void *)0))=-2, t409={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L747] 1 z$w_buff1 = z$w_buff0 [L748] 1 z$w_buff0 = 1 [L749] 1 z$w_buff1_used = z$w_buff0_used [L750] 1 z$w_buff0_used = (_Bool)1 [L751] CALL 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L751] RET 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L752] 1 z$r_buff1_thd0 = z$r_buff0_thd0 [L753] 1 z$r_buff1_thd1 = z$r_buff0_thd1 [L754] 1 z$r_buff1_thd2 = z$r_buff0_thd2 [L755] 1 z$r_buff1_thd3 = z$r_buff0_thd3 [L756] 1 z$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L841] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t409={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L841] COND TRUE 0 asdf<2 [L841] FCALL, FORK 0 pthread_create(&t409[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t409[asdf], ((void *)0), P0, ((void *)0))=-1, t409={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L747] 2 z$w_buff1 = z$w_buff0 [L748] 2 z$w_buff0 = 1 [L749] 2 z$w_buff1_used = z$w_buff0_used [L750] 2 z$w_buff0_used = (_Bool)1 [L751] CALL 2 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=1, z$w_buff1_used=1, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 843]: 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: 845]: 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: 841]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 154 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 180 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 162.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 158.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 2 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:12:24,739 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...