/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_mix035.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:27:07,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:27:07,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:27:07,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:27:07,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:27:07,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:27:07,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:27:07,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:27:07,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:27:07,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:27:07,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:27:07,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:27:07,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:27:07,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:27:07,997 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:27:07,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:27:07,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:27:07,998 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:27:07,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:27:07,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:27:07,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:27:07,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:27:07,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:27:07,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:27:07,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:27:07,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:27:08,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:27:08,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:27:08,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:27:08,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:27:08,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:27:08,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:27:08,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:27:08,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:27:08,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:27:08,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:27:08,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:27:08,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:27:08,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:27:08,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:27:08,003 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:27:08,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:27:08,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:27:08,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:27:08,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:27:08,261 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:27:08,262 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:27:08,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix035.oepc_bound2.i [2023-08-03 17:27:09,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:27:09,789 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:27:09,789 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix035.oepc_bound2.i [2023-08-03 17:27:09,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3fefd48/e6b8d67888504401868296d72ebbf7fa/FLAG93836ad61 [2023-08-03 17:27:09,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3fefd48/e6b8d67888504401868296d72ebbf7fa [2023-08-03 17:27:09,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:27:09,832 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:27:09,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:27:09,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:27:09,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:27:09,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:27:09" (1/1) ... [2023-08-03 17:27:09,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70af3073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:09, skipping insertion in model container [2023-08-03 17:27:09,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:27:09" (1/1) ... [2023-08-03 17:27:09,893 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:27:10,020 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_mix035.oepc_bound2.i[945,958] [2023-08-03 17:27:10,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:27:10,239 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:27:10,253 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_mix035.oepc_bound2.i[945,958] [2023-08-03 17:27:10,267 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:27:10,269 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:27:10,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:27:10,355 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:27:10,356 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:27:10,362 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:27:10,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10 WrapperNode [2023-08-03 17:27:10,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:27:10,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:27:10,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:27:10,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:27:10,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,406 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2023-08-03 17:27:10,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:27:10,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:27:10,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:27:10,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:27:10,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:27:10,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:27:10,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:27:10,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:27:10,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (1/1) ... [2023-08-03 17:27:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:27:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:27:10,503 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 17:27:10,519 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 17:27:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:27:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:27:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:27:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:27:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:27:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:27:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:27:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:27:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:27:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:27:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:27:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:27:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:27:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:27:10,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:27:10,537 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 17:27:10,652 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:27:10,654 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:27:10,947 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:27:11,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:27:11,078 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:27:11,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:27:11 BoogieIcfgContainer [2023-08-03 17:27:11,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:27:11,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:27:11,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:27:11,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:27:11,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:27:09" (1/3) ... [2023-08-03 17:27:11,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9fa9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:27:11, skipping insertion in model container [2023-08-03 17:27:11,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:27:10" (2/3) ... [2023-08-03 17:27:11,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9fa9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:27:11, skipping insertion in model container [2023-08-03 17:27:11,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:27:11" (3/3) ... [2023-08-03 17:27:11,091 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix035.oepc_bound2.i [2023-08-03 17:27:11,097 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:27:11,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:27:11,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:27:11,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:27:11,166 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:27:11,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 283 flow [2023-08-03 17:27:11,368 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-03 17:27:11,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:27:11,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2038 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-03 17:27:11,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 134 transitions, 283 flow [2023-08-03 17:27:11,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 134 transitions, 283 flow [2023-08-03 17:27:11,388 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:27:11,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 134 transitions, 283 flow [2023-08-03 17:27:11,409 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 134 transitions, 283 flow [2023-08-03 17:27:11,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 283 flow [2023-08-03 17:27:11,473 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-03 17:27:11,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:27:11,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2038 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-03 17:27:11,482 INFO L119 LiptonReduction]: Number of co-enabled transitions 2944 [2023-08-03 17:27:15,020 INFO L134 LiptonReduction]: Checked pairs total: 7972 [2023-08-03 17:27:15,020 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-03 17:27:15,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:27:15,037 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;@4d942f13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:27:15,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:27:15,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:27:15,041 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-03 17:27:15,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:27:15,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:27:15,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:27:15,042 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 17:27:15,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:27:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash 17747289, now seen corresponding path program 1 times [2023-08-03 17:27:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:27:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375462760] [2023-08-03 17:27:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:27:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:27:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:27:15,435 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 17:27:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:27:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375462760] [2023-08-03 17:27:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375462760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:27:15,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:27:15,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:27:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710647341] [2023-08-03 17:27:15,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:27:15,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:27:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:27:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:27:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:27:15,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 246 [2023-08-03 17:27:15,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 17:27:15,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:27:15,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 246 [2023-08-03 17:27:15,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:27:16,030 INFO L124 PetriNetUnfolderBase]: 2468/4208 cut-off events. [2023-08-03 17:27:16,030 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-03 17:27:16,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8179 conditions, 4208 events. 2468/4208 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 26905 event pairs, 650 based on Foata normal form. 150/3866 useless extension candidates. Maximal degree in co-relation 6907. Up to 2665 conditions per place. [2023-08-03 17:27:16,053 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 45 selfloop transitions, 2 changer transitions 4/57 dead transitions. [2023-08-03 17:27:16,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 237 flow [2023-08-03 17:27:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:27:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:27:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-08-03 17:27:16,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2023-08-03 17:27:16,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-08-03 17:27:16,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-08-03 17:27:16,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:27:16,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-08-03 17:27:16,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 17:27:16,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 17:27:16,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 17:27:16,079 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 87 flow. Second operand 3 states and 405 transitions. [2023-08-03 17:27:16,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 237 flow [2023-08-03 17:27:16,082 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 17:27:16,083 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 83 flow [2023-08-03 17:27:16,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, 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 17:27:16,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-03 17:27:16,088 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 83 flow [2023-08-03 17:27:16,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 17:27:16,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:27:16,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:27:16,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:27:16,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:27:16,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:27:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash -124644971, now seen corresponding path program 1 times [2023-08-03 17:27:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:27:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612360914] [2023-08-03 17:27:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:27:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:27:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:27:16,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:27:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:27:16,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:27:16,170 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:27:16,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:27:16,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:27:16,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:27:16,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:27:16,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:27:16,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:27:16,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:27:16,175 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:27:16,178 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:27:16,179 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:27:16,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:27:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 161 transitions, 358 flow [2023-08-03 17:27:16,423 INFO L124 PetriNetUnfolderBase]: 93/1416 cut-off events. [2023-08-03 17:27:16,423 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:27:16,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 1416 events. 93/1416 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9849 event pairs, 0 based on Foata normal form. 0/1255 useless extension candidates. Maximal degree in co-relation 1021. Up to 54 conditions per place. [2023-08-03 17:27:16,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 161 transitions, 358 flow [2023-08-03 17:27:16,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 161 transitions, 358 flow [2023-08-03 17:27:16,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:27:16,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 161 transitions, 358 flow [2023-08-03 17:27:16,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 161 transitions, 358 flow [2023-08-03 17:27:16,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 161 transitions, 358 flow [2023-08-03 17:27:16,597 INFO L124 PetriNetUnfolderBase]: 93/1416 cut-off events. [2023-08-03 17:27:16,598 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:27:16,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 1416 events. 93/1416 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9849 event pairs, 0 based on Foata normal form. 0/1255 useless extension candidates. Maximal degree in co-relation 1021. Up to 54 conditions per place. [2023-08-03 17:27:16,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 7180 [2023-08-03 17:27:20,046 INFO L134 LiptonReduction]: Checked pairs total: 25755 [2023-08-03 17:27:20,046 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-03 17:27:20,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:27:20,049 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;@4d942f13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:27:20,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:27:20,052 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:27:20,052 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-03 17:27:20,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:27:20,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:27:20,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:27:20,052 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 17:27:20,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:27:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 27228492, now seen corresponding path program 1 times [2023-08-03 17:27:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:27:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732214870] [2023-08-03 17:27:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:27:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:27:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:27:20,193 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 17:27:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:27:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732214870] [2023-08-03 17:27:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732214870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:27:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:27:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:27:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916178985] [2023-08-03 17:27:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:27:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:27:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:27:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:27:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:27:20,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 281 [2023-08-03 17:27:20,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 17:27:20,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:27:20,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 281 [2023-08-03 17:27:20,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:28:35,945 INFO L124 PetriNetUnfolderBase]: 633758/832627 cut-off events. [2023-08-03 17:28:35,945 INFO L125 PetriNetUnfolderBase]: For 9470/9470 co-relation queries the response was YES. [2023-08-03 17:28:38,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635986 conditions, 832627 events. 633758/832627 cut-off events. For 9470/9470 co-relation queries the response was YES. Maximal size of possible extension queue 21673. Compared 6397772 event pairs, 105182 based on Foata normal form. 17577/756194 useless extension candidates. Maximal degree in co-relation 1377082. Up to 729279 conditions per place. [2023-08-03 17:28:41,316 INFO L140 encePairwiseOnDemand]: 275/281 looper letters, 75 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-03 17:28:41,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 397 flow [2023-08-03 17:28:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:28:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:28:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 17:28:41,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776986951364176 [2023-08-03 17:28:41,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 17:28:41,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 17:28:41,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:28:41,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 17:28:41,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:28:41,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 17:28:41,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 17:28:41,328 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 152 flow. Second operand 3 states and 487 transitions. [2023-08-03 17:28:41,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 397 flow [2023-08-03 17:28:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 391 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:28:41,343 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 165 flow [2023-08-03 17:28:41,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=144, 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=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-08-03 17:28:41,344 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-03 17:28:41,344 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 165 flow [2023-08-03 17:28:41,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 17:28:41,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:28:41,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:28:41,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:28:41,345 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 17:28:41,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:28:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash -896620442, now seen corresponding path program 1 times [2023-08-03 17:28:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:28:41,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601535044] [2023-08-03 17:28:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:28:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:28:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:28:41,400 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 17:28:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:28:41,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601535044] [2023-08-03 17:28:41,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601535044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:28:41,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:28:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:28:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475168652] [2023-08-03 17:28:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:28:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:28:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:28:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:28:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:28:41,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-08-03 17:28:41,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 17:28:41,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:28:41,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-08-03 17:28:41,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:29:58,488 INFO L124 PetriNetUnfolderBase]: 618374/806798 cut-off events. [2023-08-03 17:29:58,488 INFO L125 PetriNetUnfolderBase]: For 61828/61828 co-relation queries the response was YES. [2023-08-03 17:30:01,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695361 conditions, 806798 events. 618374/806798 cut-off events. For 61828/61828 co-relation queries the response was YES. Maximal size of possible extension queue 20321. Compared 5873270 event pairs, 518026 based on Foata normal form. 0/701602 useless extension candidates. Maximal degree in co-relation 1116530. Up to 771849 conditions per place. [2023-08-03 17:30:04,089 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 48 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-03 17:30:04,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 278 flow [2023-08-03 17:30:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:30:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:30:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-03 17:30:04,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527876631079478 [2023-08-03 17:30:04,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-03 17:30:04,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-03 17:30:04,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:30:04,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-03 17:30:04,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 17:30:04,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 17:30:04,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 17:30:04,096 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 165 flow. Second operand 3 states and 445 transitions. [2023-08-03 17:30:04,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 278 flow [2023-08-03 17:30:04,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:30:04,156 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 174 flow [2023-08-03 17:30:04,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2023-08-03 17:30:04,157 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 5 predicate places. [2023-08-03 17:30:04,157 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 174 flow [2023-08-03 17:30:04,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 17:30:04,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:04,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:30:04,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:30:04,158 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 17:30:04,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1205416371, now seen corresponding path program 1 times [2023-08-03 17:30:04,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:04,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928450586] [2023-08-03 17:30:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:04,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:30:04,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:30:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:30:04,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:30:04,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:30:04,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:30:04,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:30:04,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:30:04,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:30:04,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:30:04,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:30:04,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:30:04,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:30:04,188 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:30:04,193 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:30:04,193 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:30:04,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:30:04 BasicIcfg [2023-08-03 17:30:04,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:30:04,240 INFO L158 Benchmark]: Toolchain (without parser) took 174401.01ms. Allocated memory was 348.1MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 297.1MB in the beginning and 9.3GB in the end (delta: -9.0GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 17:30:04,242 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory is still 301.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:30:04,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.88ms. Allocated memory is still 348.1MB. Free memory was 297.1MB in the beginning and 273.4MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:30:04,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.31ms. Allocated memory is still 348.1MB. Free memory was 273.4MB in the beginning and 271.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:30:04,245 INFO L158 Benchmark]: Boogie Preprocessor took 62.91ms. Allocated memory is still 348.1MB. Free memory was 271.0MB in the beginning and 268.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:30:04,245 INFO L158 Benchmark]: RCFGBuilder took 610.27ms. Allocated memory was 348.1MB in the beginning and 480.2MB in the end (delta: 132.1MB). Free memory was 268.9MB in the beginning and 420.4MB in the end (delta: -151.6MB). Peak memory consumption was 17.8MB. Max. memory is 16.0GB. [2023-08-03 17:30:04,246 INFO L158 Benchmark]: TraceAbstraction took 173148.19ms. Allocated memory was 480.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 420.4MB in the beginning and 9.3GB in the end (delta: -8.9GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 17:30:04,249 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 348.1MB. Free memory is still 301.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 528.88ms. Allocated memory is still 348.1MB. Free memory was 297.1MB in the beginning and 273.4MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.31ms. Allocated memory is still 348.1MB. Free memory was 273.4MB in the beginning and 271.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 62.91ms. Allocated memory is still 348.1MB. Free memory was 271.0MB in the beginning and 268.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 610.27ms. Allocated memory was 348.1MB in the beginning and 480.2MB in the end (delta: 132.1MB). Free memory was 268.9MB in the beginning and 420.4MB in the end (delta: -151.6MB). Peak memory consumption was 17.8MB. Max. memory is 16.0GB. * TraceAbstraction took 173148.19ms. Allocated memory was 480.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 420.4MB in the beginning and 9.3GB in the end (delta: -8.9GB). Peak memory consumption was 6.6GB. 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: 3.6s, 136 PlacesBefore, 42 PlacesAfterwards, 134 TransitionsBefore, 36 TransitionsAfterwards, 2944 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 112 TotalNumberOfCompositions, 7972 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4260, independent: 4053, independent conditional: 0, independent unconditional: 4053, dependent: 207, dependent conditional: 0, dependent unconditional: 207, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1578, independent: 1546, independent conditional: 0, independent unconditional: 1546, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4260, independent: 2507, independent conditional: 0, independent unconditional: 2507, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 1578, unknown conditional: 0, unknown unconditional: 1578] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 169 PlacesBefore, 70 PlacesAfterwards, 161 TransitionsBefore, 58 TransitionsAfterwards, 7180 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 120 TotalNumberOfCompositions, 25755 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9968, independent: 9565, independent conditional: 0, independent unconditional: 9565, dependent: 403, dependent conditional: 0, dependent unconditional: 403, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3554, independent: 3489, independent conditional: 0, independent unconditional: 3489, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9968, independent: 6076, independent conditional: 0, independent unconditional: 6076, dependent: 338, dependent conditional: 0, dependent unconditional: 338, unknown: 3554, unknown conditional: 0, unknown unconditional: 3554] , Statistics on independence cache: Total cache size (in pairs): 458, Positive cache size: 428, Positive conditional cache size: 0, Positive unconditional cache size: 428, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, 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; [L719] 0 int a = 0; [L720] 0 _Bool a$flush_delayed; [L721] 0 int a$mem_tmp; [L722] 0 _Bool a$r_buff0_thd0; [L723] 0 _Bool a$r_buff0_thd1; [L724] 0 _Bool a$r_buff0_thd2; [L725] 0 _Bool a$r_buff0_thd3; [L726] 0 _Bool a$r_buff1_thd0; [L727] 0 _Bool a$r_buff1_thd1; [L728] 0 _Bool a$r_buff1_thd2; [L729] 0 _Bool a$r_buff1_thd3; [L730] 0 _Bool a$read_delayed; [L731] 0 int *a$read_delayed_var; [L732] 0 int a$w_buff0; [L733] 0 _Bool a$w_buff0_used; [L734] 0 int a$w_buff1; [L735] 0 _Bool a$w_buff1_used; [L736] 0 _Bool main$tmp_guard0; [L737] 0 _Bool main$tmp_guard1; [L739] 0 int x = 0; [L741] 0 int y = 0; [L743] 0 int z = 0; [L744] 0 _Bool weak$$choice0; [L745] 0 _Bool weak$$choice2; [L845] 0 pthread_t t913[2]; [L846] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t913={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L846] COND TRUE 0 asdf<2 [L846] FCALL, FORK 0 pthread_create(&t913[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, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t913[asdf], ((void *)0), P0, ((void *)0))=-1, t913={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L749] 1 a$w_buff1 = a$w_buff0 [L750] 1 a$w_buff0 = 1 [L751] 1 a$w_buff1_used = a$w_buff0_used [L752] 1 a$w_buff0_used = (_Bool)1 [L753] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L753] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L754] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L755] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L756] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L757] 1 a$r_buff1_thd3 = a$r_buff0_thd3 [L758] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L846] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t913={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L846] COND TRUE 0 asdf<2 [L846] FCALL, FORK 0 pthread_create(&t913[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, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t913[asdf], ((void *)0), P0, ((void *)0))=0, t913={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L749] 2 a$w_buff1 = a$w_buff0 [L750] 2 a$w_buff0 = 1 [L751] 2 a$w_buff1_used = a$w_buff0_used [L752] 2 a$w_buff0_used = (_Bool)1 [L753] CALL 2 __VERIFIER_assert(!(a$w_buff1_used && a$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, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=1, a$w_buff1_used=1, a=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 850]: 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: 846]: 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: 848]: 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, 157 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: 5.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, 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, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 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, 0.0s SatisfiabilityAnalysisTime, 0.3s 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, 184 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: 168.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 163.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 1 mSDtfsCounter, 179 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=174occurred 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, 0.2s 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 17:30:04,282 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...