/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_rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:46:20,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:46:20,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:46:20,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:46:20,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:46:20,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:46:20,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:46:20,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:46:20,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:46:20,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:46:20,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:46:20,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:46:20,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:46:20,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:46:20,462 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:46:20,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:46:20,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:46:20,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:46:20,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:46:20,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:46:20,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:46:20,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:46:20,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:46:20,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:46:20,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:46:20,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:46:20,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:46:20,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:46:20,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:46:20,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:46:20,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:46:20,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:46:20,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:46:20,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:46:20,472 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:46:20,472 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:46:20,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:46:20,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:46:20,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:46:20,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:46:20,669 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:46:20,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 17:46:21,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:46:21,701 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:46:21,702 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 17:46:21,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a41cbad/89a79a63e6b1451ba590adafc5fb0da4/FLAGd11c99af1 [2023-08-03 17:46:21,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a41cbad/89a79a63e6b1451ba590adafc5fb0da4 [2023-08-03 17:46:21,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:46:21,733 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:46:21,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:46:21,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:46:21,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:46:21,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:46:21" (1/1) ... [2023-08-03 17:46:21,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ba8907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:21, skipping insertion in model container [2023-08-03 17:46:21,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:46:21" (1/1) ... [2023-08-03 17:46:21,777 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:46:21,876 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_rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[1038,1051] [2023-08-03 17:46:22,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:46:22,056 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:46:22,066 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_rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[1038,1051] [2023-08-03 17:46:22,084 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:46:22,085 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:46:22,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:46:22,133 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:46:22,133 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:46:22,137 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:46:22,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22 WrapperNode [2023-08-03 17:46:22,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:46:22,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:46:22,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:46:22,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:46:22,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,187 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-03 17:46:22,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:46:22,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:46:22,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:46:22,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:46:22,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:46:22,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:46:22,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:46:22,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:46:22,221 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (1/1) ... [2023-08-03 17:46:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:46:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:22,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:46:22,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:46:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:46:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:46:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:46:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:46:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:46:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:46:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:46:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:46:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:46:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:46:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:46:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:46:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:46:22,273 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:46:22,359 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:46:22,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:46:22,645 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:46:22,774 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:46:22,774 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 17:46:22,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:46:22 BoogieIcfgContainer [2023-08-03 17:46:22,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:46:22,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:46:22,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:46:22,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:46:22,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:46:21" (1/3) ... [2023-08-03 17:46:22,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e50fe5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:46:22, skipping insertion in model container [2023-08-03 17:46:22,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:46:22" (2/3) ... [2023-08-03 17:46:22,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e50fe5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:46:22, skipping insertion in model container [2023-08-03 17:46:22,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:46:22" (3/3) ... [2023-08-03 17:46:22,783 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 17:46:22,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:46:22,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:46:22,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:46:22,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:46:22,833 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:46:22,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 222 flow [2023-08-03 17:46:22,924 INFO L124 PetriNetUnfolderBase]: 14/224 cut-off events. [2023-08-03 17:46:22,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:22,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 224 events. 14/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 644 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 17:46:22,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 106 transitions, 222 flow [2023-08-03 17:46:22,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 106 transitions, 222 flow [2023-08-03 17:46:22,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:46:22,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 222 flow [2023-08-03 17:46:22,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 222 flow [2023-08-03 17:46:22,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 222 flow [2023-08-03 17:46:23,010 INFO L124 PetriNetUnfolderBase]: 14/224 cut-off events. [2023-08-03 17:46:23,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:23,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 224 events. 14/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 644 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 17:46:23,015 INFO L119 LiptonReduction]: Number of co-enabled transitions 1732 [2023-08-03 17:46:25,568 INFO L134 LiptonReduction]: Checked pairs total: 5004 [2023-08-03 17:46:25,568 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-03 17:46:25,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:46:25,589 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;@6f48cb45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:46:25,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 17:46:25,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:46:25,592 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-03 17:46:25,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:25,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:25,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:46:25,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:46:25,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 524237315, now seen corresponding path program 1 times [2023-08-03 17:46:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077987961] [2023-08-03 17:46:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:25,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:25,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077987961] [2023-08-03 17:46:25,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077987961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:25,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:25,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:46:25,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075739311] [2023-08-03 17:46:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:25,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:25,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:25,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 197 [2023-08-03 17:46:25,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:25,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:25,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 197 [2023-08-03 17:46:25,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:25,955 INFO L124 PetriNetUnfolderBase]: 653/1111 cut-off events. [2023-08-03 17:46:25,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:25,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 1111 events. 653/1111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4999 event pairs, 288 based on Foata normal form. 48/955 useless extension candidates. Maximal degree in co-relation 2216. Up to 1092 conditions per place. [2023-08-03 17:46:25,961 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-03 17:46:25,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 138 flow [2023-08-03 17:46:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-08-03 17:46:25,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49238578680203043 [2023-08-03 17:46:25,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-08-03 17:46:25,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-08-03 17:46:25,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:25,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-08-03 17:46:25,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:25,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:25,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:25,980 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 66 flow. Second operand 3 states and 291 transitions. [2023-08-03 17:46:25,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 138 flow [2023-08-03 17:46:25,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:46:25,983 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 72 flow [2023-08-03 17:46:25,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-03 17:46:25,986 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-03 17:46:25,986 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 72 flow [2023-08-03 17:46:25,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:25,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:25,987 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:46:25,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:46:25,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:46:25,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash -939454249, now seen corresponding path program 1 times [2023-08-03 17:46:25,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:25,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520669235] [2023-08-03 17:46:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:25,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:26,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:46:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:26,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:46:26,021 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:46:26,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 17:46:26,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 17:46:26,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 17:46:26,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 17:46:26,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 17:46:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:46:26,023 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:46:26,025 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:46:26,025 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:46:26,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:46:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 126 transitions, 276 flow [2023-08-03 17:46:26,075 INFO L124 PetriNetUnfolderBase]: 30/466 cut-off events. [2023-08-03 17:46:26,075 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:46:26,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 466 events. 30/466 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2023 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 335. Up to 18 conditions per place. [2023-08-03 17:46:26,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 126 transitions, 276 flow [2023-08-03 17:46:26,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 126 transitions, 276 flow [2023-08-03 17:46:26,078 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:46:26,078 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 126 transitions, 276 flow [2023-08-03 17:46:26,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 126 transitions, 276 flow [2023-08-03 17:46:26,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 126 transitions, 276 flow [2023-08-03 17:46:26,108 INFO L124 PetriNetUnfolderBase]: 30/466 cut-off events. [2023-08-03 17:46:26,108 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:46:26,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 466 events. 30/466 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2023 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 335. Up to 18 conditions per place. [2023-08-03 17:46:26,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 4180 [2023-08-03 17:46:28,420 INFO L134 LiptonReduction]: Checked pairs total: 13979 [2023-08-03 17:46:28,421 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-03 17:46:28,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:46:28,424 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;@6f48cb45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:46:28,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:46:28,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:46:28,426 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-03 17:46:28,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:46:28,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:28,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:46:28,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:28,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash 754261171, now seen corresponding path program 1 times [2023-08-03 17:46:28,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:28,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902785001] [2023-08-03 17:46:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:28,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:28,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902785001] [2023-08-03 17:46:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902785001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:28,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:46:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849300372] [2023-08-03 17:46:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:28,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:28,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-08-03 17:46:28,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:28,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:28,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-08-03 17:46:28,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:34,193 INFO L124 PetriNetUnfolderBase]: 48350/68369 cut-off events. [2023-08-03 17:46:34,194 INFO L125 PetriNetUnfolderBase]: For 930/930 co-relation queries the response was YES. [2023-08-03 17:46:34,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134273 conditions, 68369 events. 48350/68369 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 2131. Compared 453592 event pairs, 34740 based on Foata normal form. 1806/58822 useless extension candidates. Maximal degree in co-relation 20501. Up to 64683 conditions per place. [2023-08-03 17:46:34,493 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-03 17:46:34,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 212 flow [2023-08-03 17:46:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-03 17:46:34,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067873303167421 [2023-08-03 17:46:34,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-03 17:46:34,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-03 17:46:34,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:34,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-03 17:46:34,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:34,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:34,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:34,503 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 114 flow. Second operand 3 states and 336 transitions. [2023-08-03 17:46:34,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 212 flow [2023-08-03 17:46:34,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 208 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 17:46:34,509 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 120 flow [2023-08-03 17:46:34,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-03 17:46:34,509 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-03 17:46:34,509 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 120 flow [2023-08-03 17:46:34,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:34,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:34,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:46:34,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:34,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -797524084, now seen corresponding path program 1 times [2023-08-03 17:46:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792396462] [2023-08-03 17:46:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792396462] [2023-08-03 17:46:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792396462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:46:34,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47358068] [2023-08-03 17:46:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:34,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:34,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:34,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:46:34,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 17:46:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:34,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:46:34,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:46:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:34,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:46:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47358068] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:46:34,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:46:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:46:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783542152] [2023-08-03 17:46:34,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:46:34,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:46:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:34,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:46:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:46:34,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 221 [2023-08-03 17:46:34,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:34,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:34,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 221 [2023-08-03 17:46:34,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:39,691 INFO L124 PetriNetUnfolderBase]: 43120/60505 cut-off events. [2023-08-03 17:46:39,692 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2023-08-03 17:46:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118632 conditions, 60505 events. 43120/60505 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 389330 event pairs, 19830 based on Foata normal form. 6/50790 useless extension candidates. Maximal degree in co-relation 20542. Up to 56953 conditions per place. [2023-08-03 17:46:39,920 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 50 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-03 17:46:39,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 262 flow [2023-08-03 17:46:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:46:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:46:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 439 transitions. [2023-08-03 17:46:40,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49660633484162897 [2023-08-03 17:46:40,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 439 transitions. [2023-08-03 17:46:40,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 439 transitions. [2023-08-03 17:46:40,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:40,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 439 transitions. [2023-08-03 17:46:40,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:40,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:40,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:40,121 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 120 flow. Second operand 4 states and 439 transitions. [2023-08-03 17:46:40,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 262 flow [2023-08-03 17:46:40,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:46:40,123 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 138 flow [2023-08-03 17:46:40,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-08-03 17:46:40,123 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-08-03 17:46:40,123 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 138 flow [2023-08-03 17:46:40,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:40,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:40,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:46:40,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 17:46:40,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:40,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:40,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1993139557, now seen corresponding path program 1 times [2023-08-03 17:46:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:40,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548759576] [2023-08-03 17:46:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548759576] [2023-08-03 17:46:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548759576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:46:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44377006] [2023-08-03 17:46:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:40,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:46:40,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:46:40,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 17:46:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:40,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:46:40,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:46:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:46:40,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:46:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44377006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:40,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:46:40,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:46:40,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577322236] [2023-08-03 17:46:40,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:46:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:46:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:46:40,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 221 [2023-08-03 17:46:40,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:40,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:40,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 221 [2023-08-03 17:46:40,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:45,497 INFO L124 PetriNetUnfolderBase]: 43060/60403 cut-off events. [2023-08-03 17:46:45,497 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2023-08-03 17:46:45,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118546 conditions, 60403 events. 43060/60403 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 388824 event pairs, 19800 based on Foata normal form. 36/50718 useless extension candidates. Maximal degree in co-relation 20513. Up to 56952 conditions per place. [2023-08-03 17:46:45,688 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 50 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-03 17:46:45,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 268 flow [2023-08-03 17:46:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:46:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:46:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 534 transitions. [2023-08-03 17:46:45,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832579185520362 [2023-08-03 17:46:45,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 534 transitions. [2023-08-03 17:46:45,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 534 transitions. [2023-08-03 17:46:45,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:45,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 534 transitions. [2023-08-03 17:46:45,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:45,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:45,693 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:45,693 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 138 flow. Second operand 5 states and 534 transitions. [2023-08-03 17:46:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 268 flow [2023-08-03 17:46:45,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 261 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 17:46:45,695 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 127 flow [2023-08-03 17:46:45,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-03 17:46:45,696 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-08-03 17:46:45,696 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 127 flow [2023-08-03 17:46:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:45,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:45,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:45,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 17:46:45,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:46:45,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:45,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:45,903 INFO L85 PathProgramCache]: Analyzing trace with hash -147879642, now seen corresponding path program 1 times [2023-08-03 17:46:45,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:45,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679000303] [2023-08-03 17:46:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:46:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679000303] [2023-08-03 17:46:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679000303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:46,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:46:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050676170] [2023-08-03 17:46:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:46,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:46,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:46,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 221 [2023-08-03 17:46:46,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:46,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:46,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 221 [2023-08-03 17:46:46,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:50,599 INFO L124 PetriNetUnfolderBase]: 38740/55427 cut-off events. [2023-08-03 17:46:50,600 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2023-08-03 17:46:50,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107707 conditions, 55427 events. 38740/55427 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 1808. Compared 365102 event pairs, 7492 based on Foata normal form. 0/47320 useless extension candidates. Maximal degree in co-relation 51676. Up to 48745 conditions per place. [2023-08-03 17:46:50,789 INFO L140 encePairwiseOnDemand]: 216/221 looper letters, 55 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 17:46:50,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 290 flow [2023-08-03 17:46:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-03 17:46:50,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414781297134238 [2023-08-03 17:46:50,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-03 17:46:50,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-03 17:46:50,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:50,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-03 17:46:50,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:50,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:50,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:50,793 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 127 flow. Second operand 3 states and 359 transitions. [2023-08-03 17:46:50,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 290 flow [2023-08-03 17:46:50,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:46:50,794 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 143 flow [2023-08-03 17:46:50,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-08-03 17:46:50,795 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-08-03 17:46:50,795 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 143 flow [2023-08-03 17:46:50,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:50,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:50,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 17:46:50,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:50,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -288859862, now seen corresponding path program 1 times [2023-08-03 17:46:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016025366] [2023-08-03 17:46:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:46:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:46:50,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:46:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016025366] [2023-08-03 17:46:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016025366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:46:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:46:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 17:46:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571027605] [2023-08-03 17:46:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:46:50,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:46:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:46:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:46:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:46:50,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-08-03 17:46:50,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:50,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:46:50,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-08-03 17:46:50,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:46:55,597 INFO L124 PetriNetUnfolderBase]: 38380/53777 cut-off events. [2023-08-03 17:46:55,598 INFO L125 PetriNetUnfolderBase]: For 3544/3544 co-relation queries the response was YES. [2023-08-03 17:46:55,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112748 conditions, 53777 events. 38380/53777 cut-off events. For 3544/3544 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 348225 event pairs, 29356 based on Foata normal form. 0/46432 useless extension candidates. Maximal degree in co-relation 54235. Up to 50185 conditions per place. [2023-08-03 17:46:55,795 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 53 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 17:46:55,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 288 flow [2023-08-03 17:46:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:46:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:46:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-03 17:46:55,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203619909502263 [2023-08-03 17:46:55,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-03 17:46:55,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-03 17:46:55,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:46:55,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-03 17:46:55,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,799 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 143 flow. Second operand 3 states and 345 transitions. [2023-08-03 17:46:55,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 288 flow [2023-08-03 17:46:55,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:46:55,802 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 154 flow [2023-08-03 17:46:55,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-03 17:46:55,802 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2023-08-03 17:46:55,803 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 154 flow [2023-08-03 17:46:55,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:46:55,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:46:55,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:46:55,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 17:46:55,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:46:55,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:46:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1522706781, now seen corresponding path program 1 times [2023-08-03 17:46:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:46:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271561904] [2023-08-03 17:46:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:46:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:46:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:55,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:46:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:46:55,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:46:55,844 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:46:55,844 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 17:46:55,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:46:55,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:46:55,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:46:55,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:46:55,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:46:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 17:46:55,845 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 17:46:55,848 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:46:55,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:46:55,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:46:55 BasicIcfg [2023-08-03 17:46:55,885 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:46:55,888 INFO L158 Benchmark]: Toolchain (without parser) took 34159.49ms. Allocated memory was 385.9MB in the beginning and 10.0GB in the end (delta: 9.6GB). Free memory was 333.1MB in the beginning and 7.7GB in the end (delta: -7.3GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-03 17:46:55,888 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 385.9MB. Free memory is still 334.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:46:55,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.35ms. Allocated memory is still 385.9MB. Free memory was 332.2MB in the beginning and 307.2MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 17:46:55,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.10ms. Allocated memory is still 385.9MB. Free memory was 307.2MB in the beginning and 304.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:46:55,889 INFO L158 Benchmark]: Boogie Preprocessor took 31.56ms. Allocated memory is still 385.9MB. Free memory was 304.0MB in the beginning and 301.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:46:55,889 INFO L158 Benchmark]: RCFGBuilder took 555.68ms. Allocated memory is still 385.9MB. Free memory was 301.9MB in the beginning and 250.6MB in the end (delta: 51.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. [2023-08-03 17:46:55,889 INFO L158 Benchmark]: TraceAbstraction took 33107.23ms. Allocated memory was 385.9MB in the beginning and 10.0GB in the end (delta: 9.6GB). Free memory was 250.6MB in the beginning and 7.7GB in the end (delta: -7.4GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. [2023-08-03 17:46:55,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 385.9MB. Free memory is still 334.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 404.35ms. Allocated memory is still 385.9MB. Free memory was 332.2MB in the beginning and 307.2MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.10ms. Allocated memory is still 385.9MB. Free memory was 307.2MB in the beginning and 304.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.56ms. Allocated memory is still 385.9MB. Free memory was 304.0MB in the beginning and 301.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 555.68ms. Allocated memory is still 385.9MB. Free memory was 301.9MB in the beginning and 250.6MB in the end (delta: 51.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. * TraceAbstraction took 33107.23ms. Allocated memory was 385.9MB in the beginning and 10.0GB in the end (delta: 9.6GB). Free memory was 250.6MB in the beginning and 7.7GB in the end (delta: -7.4GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 107 PlacesBefore, 32 PlacesAfterwards, 106 TransitionsBefore, 28 TransitionsAfterwards, 1732 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 91 TotalNumberOfCompositions, 5004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1944, independent: 1768, independent conditional: 0, independent unconditional: 1768, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 896, independent: 867, independent conditional: 0, independent unconditional: 867, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1944, independent: 901, independent conditional: 0, independent unconditional: 901, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 896, unknown conditional: 0, unknown unconditional: 896] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 131 PlacesBefore, 53 PlacesAfterwards, 126 TransitionsBefore, 45 TransitionsAfterwards, 4180 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 95 TotalNumberOfCompositions, 13979 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4062, independent: 3775, independent conditional: 0, independent unconditional: 3775, dependent: 287, dependent conditional: 0, dependent unconditional: 287, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1943, independent: 1891, independent conditional: 0, independent unconditional: 1891, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4062, independent: 1884, independent conditional: 0, independent unconditional: 1884, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 1943, unknown conditional: 0, unknown unconditional: 1943] , Statistics on independence cache: Total cache size (in pairs): 202, Positive cache size: 179, Positive conditional cache size: 0, Positive unconditional cache size: 179, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff1_thd0; [L726] 0 _Bool x$r_buff1_thd1; [L727] 0 _Bool x$r_buff1_thd2; [L728] 0 _Bool x$read_delayed; [L729] 0 int *x$read_delayed_var; [L730] 0 int x$w_buff0; [L731] 0 _Bool x$w_buff0_used; [L732] 0 int x$w_buff1; [L733] 0 _Bool x$w_buff1_used; [L735] 0 int y = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L836] 0 pthread_t t1617[2]; [L837] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1617={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L837] COND TRUE 0 asdf<2 [L837] FCALL, FORK 0 pthread_create(&t1617[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1617[asdf], ((void *)0), P0, ((void *)0))=-3, t1617={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L837] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1617={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L837] COND TRUE 0 asdf<2 [L837] FCALL, FORK 0 pthread_create(&t1617[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1617[asdf], ((void *)0), P0, ((void *)0))=-2, t1617={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L837] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1617={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L837] COND FALSE 0 !(asdf<2) [L838] 0 pthread_t t1618[2]; [L839] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1617={5:0}, t1618={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L839] COND TRUE 0 asdf<2 [L839] FCALL, FORK 0 pthread_create(&t1618[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1618[asdf], ((void *)0), P1, ((void *)0))=-1, t1617={5:0}, t1618={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L781] 3 x$w_buff1 = x$w_buff0 [L782] 3 x$w_buff0 = 2 [L783] 3 x$w_buff1_used = x$w_buff0_used [L784] 3 x$w_buff0_used = (_Bool)1 [L785] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 3 !(!expression) [L785] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L786] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L787] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L788] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L789] 3 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L839] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1617={5:0}, t1618={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L839] COND TRUE 0 asdf<2 [L839] FCALL, FORK 0 pthread_create(&t1618[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1618[asdf], ((void *)0), P1, ((void *)0))=0, t1617={5:0}, t1618={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L781] 4 x$w_buff1 = x$w_buff0 [L782] 4 x$w_buff0 = 2 [L783] 4 x$w_buff1_used = x$w_buff0_used [L784] 4 x$w_buff0_used = (_Bool)1 [L785] CALL 4 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 4 !expression [L19] 4 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=2, x$w_buff1_used=1, x=0, y=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 839]: 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: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 143 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: 29.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 457 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 4 mSDtfsCounter, 457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 23/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:46:55,912 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...