/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_rfi008.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:47:53,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:47:53,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:47:53,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:47:53,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:47:53,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:47:53,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:47:53,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:47:53,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:47:53,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:47:53,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:47:53,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:47:53,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:47:53,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:47:53,929 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:47:53,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:47:53,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:47:53,930 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:47:53,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:47:53,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:47:53,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:47:53,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:47:53,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:47:53,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:47:53,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:47:53,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:47:53,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:47:53,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:47:53,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:47:53,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:47:53,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:47:53,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:47:53,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:47:53,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:47:53,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:47:53,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:47:53,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:47:53,935 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:47:53,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:47:53,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:47:53,935 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:47:53,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:47:54,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:47:54,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:47:54,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:47:54,191 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:47:54,191 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:47:54,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi008.oepc_bound2.i [2023-08-03 17:47:55,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:47:55,529 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:47:55,529 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi008.oepc_bound2.i [2023-08-03 17:47:55,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454a5e9df/44bd8d5b40bf4e40bf5d90493915b428/FLAGcc7d4b961 [2023-08-03 17:47:55,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454a5e9df/44bd8d5b40bf4e40bf5d90493915b428 [2023-08-03 17:47:55,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:47:55,564 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:47:55,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:47:55,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:47:55,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:47:55,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:47:55" (1/1) ... [2023-08-03 17:47:55,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c09a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:55, skipping insertion in model container [2023-08-03 17:47:55,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:47:55" (1/1) ... [2023-08-03 17:47:55,610 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:47:55,738 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_rfi008.oepc_bound2.i[988,1001] [2023-08-03 17:47:55,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:47:55,925 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:47:55,937 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_rfi008.oepc_bound2.i[988,1001] [2023-08-03 17:47:55,955 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:47:55,957 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:47:56,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:47:56,049 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:47:56,050 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:47:56,055 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:47:56,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56 WrapperNode [2023-08-03 17:47:56,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:47:56,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:47:56,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:47:56,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:47:56,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,122 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-08-03 17:47:56,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:47:56,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:47:56,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:47:56,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:47:56,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:47:56,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:47:56,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:47:56,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:47:56,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (1/1) ... [2023-08-03 17:47:56,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:47:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:47:56,207 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 17:47:56,218 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 17:47:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:47:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:47:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:47:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:47:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:47:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:47:56,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:47:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:47:56,248 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:47:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:47:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:47:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:47:56,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:47:56,250 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 17:47:56,408 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:47:56,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:47:56,691 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:47:56,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:47:56,902 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 17:47:56,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:47:56 BoogieIcfgContainer [2023-08-03 17:47:56,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:47:56,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:47:56,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:47:56,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:47:56,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:47:55" (1/3) ... [2023-08-03 17:47:56,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f56a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:47:56, skipping insertion in model container [2023-08-03 17:47:56,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:56" (2/3) ... [2023-08-03 17:47:56,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f56a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:47:56, skipping insertion in model container [2023-08-03 17:47:56,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:47:56" (3/3) ... [2023-08-03 17:47:56,917 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi008.oepc_bound2.i [2023-08-03 17:47:56,925 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:47:56,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:47:56,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:47:56,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:47:56,993 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:47:57,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 222 flow [2023-08-03 17:47:57,131 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-08-03 17:47:57,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:57,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 222 events. 14/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 614 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-03 17:47:57,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 106 transitions, 222 flow [2023-08-03 17:47:57,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 106 transitions, 222 flow [2023-08-03 17:47:57,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:47:57,164 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 222 flow [2023-08-03 17:47:57,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 106 transitions, 222 flow [2023-08-03 17:47:57,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 222 flow [2023-08-03 17:47:57,211 INFO L124 PetriNetUnfolderBase]: 14/222 cut-off events. [2023-08-03 17:47:57,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:57,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 222 events. 14/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 614 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-03 17:47:57,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 1672 [2023-08-03 17:48:00,232 INFO L134 LiptonReduction]: Checked pairs total: 4446 [2023-08-03 17:48:00,233 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 17:48:00,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:48:00,250 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;@e11f475, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:48:00,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 17:48:00,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:48:00,254 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:48:00,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:48:00,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:00,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:48:00,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:48:00,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:00,260 INFO L85 PathProgramCache]: Analyzing trace with hash 15636318, now seen corresponding path program 1 times [2023-08-03 17:48:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:00,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965654074] [2023-08-03 17:48:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:00,620 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 17:48:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965654074] [2023-08-03 17:48:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965654074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:00,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:48:00,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:48:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934171730] [2023-08-03 17:48:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:00,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:00,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:48:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 199 [2023-08-03 17:48:00,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 17:48:00,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:00,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 199 [2023-08-03 17:48:00,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:00,832 INFO L124 PetriNetUnfolderBase]: 316/632 cut-off events. [2023-08-03 17:48:00,833 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 17:48:00,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 632 events. 316/632 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3115 event pairs, 48 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 1083. Up to 445 conditions per place. [2023-08-03 17:48:00,838 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 30 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-08-03 17:48:00,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 157 flow [2023-08-03 17:48:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-08-03 17:48:00,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192629815745393 [2023-08-03 17:48:00,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-08-03 17:48:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-08-03 17:48:00,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:00,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-08-03 17:48:00,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 17:48:00,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 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 17:48:00,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 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 17:48:00,865 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 62 flow. Second operand 3 states and 310 transitions. [2023-08-03 17:48:00,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 157 flow [2023-08-03 17:48:00,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:48:00,869 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 60 flow [2023-08-03 17:48:00,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-03 17:48:00,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-03 17:48:00,874 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 60 flow [2023-08-03 17:48:00,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 17:48:00,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:00,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:48:00,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:48:00,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:48:00,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 484951853, now seen corresponding path program 1 times [2023-08-03 17:48:00,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:00,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269334300] [2023-08-03 17:48:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:00,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:00,931 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 17:48:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269334300] [2023-08-03 17:48:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269334300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:48:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:48:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048631754] [2023-08-03 17:48:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:48:00,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 199 [2023-08-03 17:48:00,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 17:48:00,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:00,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 199 [2023-08-03 17:48:00,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:01,050 INFO L124 PetriNetUnfolderBase]: 248/466 cut-off events. [2023-08-03 17:48:01,051 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-03 17:48:01,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 466 events. 248/466 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2052 event pairs, 100 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 958. Up to 434 conditions per place. [2023-08-03 17:48:01,056 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 17:48:01,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 120 flow [2023-08-03 17:48:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-08-03 17:48:01,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48408710217755446 [2023-08-03 17:48:01,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-08-03 17:48:01,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-08-03 17:48:01,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:01,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-08-03 17:48:01,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 17:48:01,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 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 17:48:01,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 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 17:48:01,068 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 60 flow. Second operand 3 states and 289 transitions. [2023-08-03 17:48:01,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 120 flow [2023-08-03 17:48:01,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:48:01,073 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 64 flow [2023-08-03 17:48:01,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-03 17:48:01,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-03 17:48:01,078 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 64 flow [2023-08-03 17:48:01,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 17:48:01,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:01,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:48:01,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:48:01,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:48:01,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2141661072, now seen corresponding path program 1 times [2023-08-03 17:48:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:01,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540673881] [2023-08-03 17:48:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:01,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:48:01,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:48:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:48:01,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:48:01,137 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:48:01,138 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 17:48:01,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 17:48:01,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 17:48:01,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 17:48:01,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 17:48:01,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:48:01,141 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:48:01,143 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:48:01,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:48:01,166 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:48:01,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 125 transitions, 274 flow [2023-08-03 17:48:01,213 INFO L124 PetriNetUnfolderBase]: 30/457 cut-off events. [2023-08-03 17:48:01,213 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:48:01,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 457 events. 30/457 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1932 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:48:01,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 125 transitions, 274 flow [2023-08-03 17:48:01,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 125 transitions, 274 flow [2023-08-03 17:48:01,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:48:01,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 125 transitions, 274 flow [2023-08-03 17:48:01,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 125 transitions, 274 flow [2023-08-03 17:48:01,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 125 transitions, 274 flow [2023-08-03 17:48:01,263 INFO L124 PetriNetUnfolderBase]: 30/457 cut-off events. [2023-08-03 17:48:01,264 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:48:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 457 events. 30/457 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1932 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 332. Up to 18 conditions per place. [2023-08-03 17:48:01,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 3992 [2023-08-03 17:48:04,154 INFO L134 LiptonReduction]: Checked pairs total: 12835 [2023-08-03 17:48:04,155 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-03 17:48:04,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:48:04,157 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;@e11f475, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:48:04,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:48:04,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:48:04,160 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 17:48:04,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:48:04,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:04,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:48:04,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:48:04,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 23056075, now seen corresponding path program 1 times [2023-08-03 17:48:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:04,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346213817] [2023-08-03 17:48:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:04,215 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 17:48:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:04,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346213817] [2023-08-03 17:48:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346213817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:04,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:48:04,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:48:04,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317737512] [2023-08-03 17:48:04,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:48:04,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 223 [2023-08-03 17:48:04,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 17:48:04,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:04,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 223 [2023-08-03 17:48:04,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:08,080 INFO L124 PetriNetUnfolderBase]: 23746/33948 cut-off events. [2023-08-03 17:48:08,081 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2023-08-03 17:48:08,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66940 conditions, 33948 events. 23746/33948 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 220722 event pairs, 4794 based on Foata normal form. 0/29468 useless extension candidates. Maximal degree in co-relation 58708. Up to 30779 conditions per place. [2023-08-03 17:48:08,311 INFO L140 encePairwiseOnDemand]: 217/223 looper letters, 51 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-08-03 17:48:08,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 62 transitions, 269 flow [2023-08-03 17:48:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-03 17:48:08,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440956651718983 [2023-08-03 17:48:08,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-03 17:48:08,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-03 17:48:08,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:08,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-03 17:48:08,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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 17:48:08,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 17:48:08,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 17:48:08,317 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 106 flow. Second operand 3 states and 364 transitions. [2023-08-03 17:48:08,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 62 transitions, 269 flow [2023-08-03 17:48:08,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 265 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 17:48:08,320 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 121 flow [2023-08-03 17:48:08,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-03 17:48:08,321 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-03 17:48:08,321 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 121 flow [2023-08-03 17:48:08,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 17:48:08,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:08,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:48:08,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:48:08,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:48:08,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash 715029754, now seen corresponding path program 1 times [2023-08-03 17:48:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989387879] [2023-08-03 17:48:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:08,355 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 17:48:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:08,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989387879] [2023-08-03 17:48:08,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989387879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:08,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:48:08,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:48:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364031333] [2023-08-03 17:48:08,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:08,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:48:08,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 223 [2023-08-03 17:48:08,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 17:48:08,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:08,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 223 [2023-08-03 17:48:08,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:11,540 INFO L124 PetriNetUnfolderBase]: 23462/33377 cut-off events. [2023-08-03 17:48:11,540 INFO L125 PetriNetUnfolderBase]: For 2974/2974 co-relation queries the response was YES. [2023-08-03 17:48:11,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70754 conditions, 33377 events. 23462/33377 cut-off events. For 2974/2974 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 210409 event pairs, 17553 based on Foata normal form. 0/28903 useless extension candidates. Maximal degree in co-relation 49572. Up to 31780 conditions per place. [2023-08-03 17:48:11,739 INFO L140 encePairwiseOnDemand]: 220/223 looper letters, 38 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 17:48:11,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 216 flow [2023-08-03 17:48:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-03 17:48:11,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022421524663677 [2023-08-03 17:48:11,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-03 17:48:11,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-03 17:48:11,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:11,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-03 17:48:11,742 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 17:48:11,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 17:48:11,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 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 17:48:11,744 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 121 flow. Second operand 3 states and 336 transitions. [2023-08-03 17:48:11,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 216 flow [2023-08-03 17:48:11,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:48:11,750 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 130 flow [2023-08-03 17:48:11,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-03 17:48:11,751 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2023-08-03 17:48:11,752 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 130 flow [2023-08-03 17:48:11,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 17:48:11,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:11,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:48:11,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:48:11,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:48:11,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 53783697, now seen corresponding path program 1 times [2023-08-03 17:48:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524589342] [2023-08-03 17:48:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:48:11,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:48:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:48:11,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:48:11,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:48:11,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 17:48:11,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:48:11,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:48:11,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:48:11,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:48:11,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:48:11,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 17:48:11,812 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:48:11,815 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:48:11,815 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:48:11,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:48:11 BasicIcfg [2023-08-03 17:48:11,879 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:48:11,880 INFO L158 Benchmark]: Toolchain (without parser) took 16315.21ms. Allocated memory was 461.4MB in the beginning and 2.7GB in the end (delta: 2.3GB). Free memory was 413.7MB in the beginning and 2.3GB in the end (delta: -1.9GB). Peak memory consumption was 418.3MB. Max. memory is 16.0GB. [2023-08-03 17:48:11,882 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 329.3MB. Free memory is still 282.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:48:11,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.78ms. Allocated memory is still 461.4MB. Free memory was 413.7MB in the beginning and 389.5MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:48:11,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.16ms. Allocated memory is still 461.4MB. Free memory was 389.5MB in the beginning and 386.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:48:11,883 INFO L158 Benchmark]: Boogie Preprocessor took 48.52ms. Allocated memory is still 461.4MB. Free memory was 386.8MB in the beginning and 384.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:48:11,883 INFO L158 Benchmark]: RCFGBuilder took 734.02ms. Allocated memory is still 461.4MB. Free memory was 384.7MB in the beginning and 413.2MB in the end (delta: -28.5MB). Peak memory consumption was 29.5MB. Max. memory is 16.0GB. [2023-08-03 17:48:11,883 INFO L158 Benchmark]: TraceAbstraction took 14970.10ms. Allocated memory was 461.4MB in the beginning and 2.7GB in the end (delta: 2.3GB). Free memory was 412.2MB in the beginning and 2.3GB in the end (delta: -1.9GB). Peak memory consumption was 416.1MB. Max. memory is 16.0GB. [2023-08-03 17:48:11,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 329.3MB. Free memory is still 282.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 490.78ms. Allocated memory is still 461.4MB. Free memory was 413.7MB in the beginning and 389.5MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.16ms. Allocated memory is still 461.4MB. Free memory was 389.5MB in the beginning and 386.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.52ms. Allocated memory is still 461.4MB. Free memory was 386.8MB in the beginning and 384.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 734.02ms. Allocated memory is still 461.4MB. Free memory was 384.7MB in the beginning and 413.2MB in the end (delta: -28.5MB). Peak memory consumption was 29.5MB. Max. memory is 16.0GB. * TraceAbstraction took 14970.10ms. Allocated memory was 461.4MB in the beginning and 2.7GB in the end (delta: 2.3GB). Free memory was 412.2MB in the beginning and 2.3GB in the end (delta: -1.9GB). Peak memory consumption was 416.1MB. 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: 3.1s, 107 PlacesBefore, 30 PlacesAfterwards, 106 TransitionsBefore, 26 TransitionsAfterwards, 1672 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4446 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2445, independent: 2300, independent conditional: 0, independent unconditional: 2300, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 929, independent: 895, independent conditional: 0, independent unconditional: 895, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2445, independent: 1405, independent conditional: 0, independent unconditional: 1405, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 929, unknown conditional: 0, unknown unconditional: 929] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 130 PlacesBefore, 49 PlacesAfterwards, 125 TransitionsBefore, 41 TransitionsAfterwards, 3992 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 98 TotalNumberOfCompositions, 12835 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4780, independent: 4519, independent conditional: 0, independent unconditional: 4519, dependent: 261, dependent conditional: 0, dependent unconditional: 261, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1984, independent: 1932, independent conditional: 0, independent unconditional: 1932, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4780, independent: 2587, independent conditional: 0, independent unconditional: 2587, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 1984, unknown conditional: 0, unknown unconditional: 1984] , Statistics on independence cache: Total cache size (in pairs): 191, Positive cache size: 170, Positive conditional cache size: 0, Positive unconditional cache size: 170, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, 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_p0_EBX = 0; [L715] 0 int __unbuffered_p1_EAX = 0; [L717] 0 int __unbuffered_p1_EBX = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L722] 0 _Bool x$flush_delayed; [L723] 0 int x$mem_tmp; [L724] 0 _Bool x$r_buff0_thd0; [L725] 0 _Bool x$r_buff0_thd1; [L726] 0 _Bool x$r_buff0_thd2; [L727] 0 _Bool x$r_buff1_thd0; [L728] 0 _Bool x$r_buff1_thd1; [L729] 0 _Bool x$r_buff1_thd2; [L730] 0 _Bool x$read_delayed; [L731] 0 int *x$read_delayed_var; [L732] 0 int x$w_buff0; [L733] 0 _Bool x$w_buff0_used; [L734] 0 int x$w_buff1; [L735] 0 _Bool x$w_buff1_used; [L737] 0 int y = 0; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L831] 0 pthread_t t1721[2]; [L832] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1721={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] [L832] COND TRUE 0 asdf<2 [L832] FCALL, FORK 0 pthread_create(&t1721[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1721[asdf], ((void *)0), P0, ((void *)0))=-2, t1721={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] [L743] 1 x$w_buff1 = x$w_buff0 [L744] 1 x$w_buff0 = 1 [L745] 1 x$w_buff1_used = x$w_buff0_used [L746] 1 x$w_buff0_used = (_Bool)1 [L747] CALL 1 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 1 !(!expression) [L747] RET 1 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L748] 1 x$r_buff1_thd0 = x$r_buff0_thd0 [L749] 1 x$r_buff1_thd1 = x$r_buff0_thd1 [L750] 1 x$r_buff1_thd2 = x$r_buff0_thd2 [L751] 1 x$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$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=1, 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$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L832] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1721={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=1, 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$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L832] COND TRUE 0 asdf<2 [L832] FCALL, FORK 0 pthread_create(&t1721[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1721[asdf], ((void *)0), P0, ((void *)0))=-1, t1721={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=1, 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$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L743] 2 x$w_buff1 = x$w_buff0 [L744] 2 x$w_buff0 = 1 [L745] 2 x$w_buff1_used = x$w_buff0_used [L746] 2 x$w_buff0_used = (_Bool)1 [L747] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=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=1, 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$w_buff0=1, x$w_buff0_used=1, x$w_buff1=1, x$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: 834]: 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: 832]: 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, 122 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: 4.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 2 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 141 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 17:48:11,911 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...