/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_power.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:56:20,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:56:20,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:56:20,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:56:20,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:56:20,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:56:20,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:56:20,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:56:20,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:56:20,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:56:20,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:56:20,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:56:20,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:56:20,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:56:20,910 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:56:20,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:56:20,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:56:20,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:56:20,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:56:20,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:56:20,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:56:20,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:56:20,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:56:20,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:56:20,914 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:56:20,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:56:20,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:56:20,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:56:20,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:56:20,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:56:20,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:56:20,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:56:20,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:56:20,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:56:20,917 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:56:20,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:56:20,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:56:20,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:56:20,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:56:20,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:56:20,919 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:56:20,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:56:21,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:56:21,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:56:21,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:56:21,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:56:21,168 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:56:21,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_power.oepc_bound2.i [2023-08-04 06:56:22,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:56:22,544 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:56:22,545 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_power.oepc_bound2.i [2023-08-04 06:56:22,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab89b0e4/3260c4c95eba4bbab6d8fbf5b8fe7bfe/FLAGe620d4424 [2023-08-04 06:56:22,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab89b0e4/3260c4c95eba4bbab6d8fbf5b8fe7bfe [2023-08-04 06:56:22,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:56:22,585 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:56:22,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:56:22,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:56:22,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:56:22,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:56:22" (1/1) ... [2023-08-04 06:56:22,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11924e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:22, skipping insertion in model container [2023-08-04 06:56:22,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:56:22" (1/1) ... [2023-08-04 06:56:22,647 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:56:22,772 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_safe015_power.oepc_bound2.i[995,1008] [2023-08-04 06:56:22,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:56:22,970 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:56:22,986 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_safe015_power.oepc_bound2.i[995,1008] [2023-08-04 06:56:22,994 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 06:56:22,996 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 06:56:23,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:56:23,099 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:56:23,100 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:56:23,106 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:56:23,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23 WrapperNode [2023-08-04 06:56:23,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:56:23,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:56:23,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:56:23,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:56:23,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,152 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2023-08-04 06:56:23,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:56:23,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:56:23,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:56:23,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:56:23,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:56:23,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:56:23,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:56:23,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:56:23,221 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (1/1) ... [2023-08-04 06:56:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:56:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:56:23,279 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) [2023-08-04 06:56:23,306 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 [2023-08-04 06:56:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 06:56:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:56:23,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:56:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:56:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:56:23,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:56:23,327 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:56:23,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:56:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:56:23,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:56:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:56:23,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:56:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:56:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:56:23,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:56:23,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:56:23,330 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:56:23,497 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:56:23,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:56:23,958 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:56:24,321 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:56:24,322 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:56:24,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:56:24 BoogieIcfgContainer [2023-08-04 06:56:24,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:56:24,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:56:24,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:56:24,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:56:24,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:56:22" (1/3) ... [2023-08-04 06:56:24,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ef2036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:56:24, skipping insertion in model container [2023-08-04 06:56:24,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:56:23" (2/3) ... [2023-08-04 06:56:24,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ef2036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:56:24, skipping insertion in model container [2023-08-04 06:56:24,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:56:24" (3/3) ... [2023-08-04 06:56:24,336 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe015_power.oepc_bound2.i [2023-08-04 06:56:24,345 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:56:24,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:56:24,354 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 06:56:24,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:56:24,433 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:56:24,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 309 flow [2023-08-04 06:56:24,635 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-04 06:56:24,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:24,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2003 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-04 06:56:24,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 147 transitions, 309 flow [2023-08-04 06:56:24,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 146 transitions, 305 flow [2023-08-04 06:56:24,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:56:24,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 146 transitions, 305 flow [2023-08-04 06:56:24,673 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 146 transitions, 305 flow [2023-08-04 06:56:24,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 305 flow [2023-08-04 06:56:24,732 INFO L124 PetriNetUnfolderBase]: 30/467 cut-off events. [2023-08-04 06:56:24,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:24,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 467 events. 30/467 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1999 event pairs, 0 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-04 06:56:24,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 2652 [2023-08-04 06:56:34,882 INFO L134 LiptonReduction]: Checked pairs total: 7011 [2023-08-04 06:56:34,883 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-04 06:56:34,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:56:34,913 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;@10a9b6ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:56:34,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-04 06:56:34,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:56:34,919 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-04 06:56:34,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:34,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:56:34,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:56:34,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 06:56:34,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:56:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1021007071, now seen corresponding path program 1 times [2023-08-04 06:56:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:56:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152569589] [2023-08-04 06:56:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:56:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:56:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:56:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:56:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:56:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152569589] [2023-08-04 06:56:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152569589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:56:35,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:56:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:56:35,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299518323] [2023-08-04 06:56:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:56:35,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:56:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:56:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:56:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:56:35,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275 [2023-08-04 06:56:35,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2023-08-04 06:56:35,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:56:35,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275 [2023-08-04 06:56:35,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:56:36,130 INFO L124 PetriNetUnfolderBase]: 2331/3601 cut-off events. [2023-08-04 06:56:36,130 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 06:56:36,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 3601 events. 2331/3601 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18604 event pairs, 1440 based on Foata normal form. 0/2925 useless extension candidates. Maximal degree in co-relation 7252. Up to 3520 conditions per place. [2023-08-04 06:56:36,156 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 29 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-08-04 06:56:36,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 147 flow [2023-08-04 06:56:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:56:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:56:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-08-04 06:56:36,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-08-04 06:56:36,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-08-04 06:56:36,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-08-04 06:56:36,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:56:36,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-08-04 06:56:36,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:56:36,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:56:36,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:56:36,186 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 75 flow. Second operand 3 states and 405 transitions. [2023-08-04 06:56:36,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 147 flow [2023-08-04 06:56:36,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 147 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:56:36,191 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 83 flow [2023-08-04 06:56:36,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-04 06:56:36,198 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-04 06:56:36,198 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 83 flow [2023-08-04 06:56:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2023-08-04 06:56:36,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:56:36,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:56:36,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:56:36,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 06:56:36,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:56:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash 789770734, now seen corresponding path program 1 times [2023-08-04 06:56:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:56:36,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044040268] [2023-08-04 06:56:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:56:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:56:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:56:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:56:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:56:36,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044040268] [2023-08-04 06:56:36,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044040268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:56:36,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377401242] [2023-08-04 06:56:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:56:36,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:56:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:56:36,325 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) [2023-08-04 06:56:36,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:56:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:56:36,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:56:36,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:56:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:56:36,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:56:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:56:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377401242] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:56:36,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:56:36,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:56:36,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704431921] [2023-08-04 06:56:36,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:56:36,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:56:36,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:56:36,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:56:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:56:36,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 275 [2023-08-04 06:56:36,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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) [2023-08-04 06:56:36,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:56:36,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 275 [2023-08-04 06:56:36,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:56:36,553 INFO L124 PetriNetUnfolderBase]: 6/20 cut-off events. [2023-08-04 06:56:36,553 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:56:36,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 20 events. 6/20 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 4/24 useless extension candidates. Maximal degree in co-relation 51. Up to 14 conditions per place. [2023-08-04 06:56:36,554 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-04 06:56:36,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 53 flow [2023-08-04 06:56:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:56:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:56:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-04 06:56:36,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581818181818182 [2023-08-04 06:56:36,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-04 06:56:36,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-04 06:56:36,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:56:36,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-04 06:56:36,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2023-08-04 06:56:36,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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) [2023-08-04 06:56:36,564 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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) [2023-08-04 06:56:36,564 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 83 flow. Second operand 4 states and 504 transitions. [2023-08-04 06:56:36,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 53 flow [2023-08-04 06:56:36,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 06:56:36,565 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-04 06:56:36,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-04 06:56:36,566 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -23 predicate places. [2023-08-04 06:56:36,566 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-04 06:56:36,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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) [2023-08-04 06:56:36,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-04 06:56:36,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-04 06:56:36,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-04 06:56:36,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-04 06:56:36,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-04 06:56:36,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:56:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:56:36,783 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:56:36,785 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 06:56:36,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 309 flow [2023-08-04 06:56:36,833 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-04 06:56:36,833 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:36,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2003 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-04 06:56:36,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 147 transitions, 309 flow [2023-08-04 06:56:36,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 118 transitions, 251 flow [2023-08-04 06:56:36,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:56:36,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 118 transitions, 251 flow [2023-08-04 06:56:36,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 118 transitions, 251 flow [2023-08-04 06:56:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 118 transitions, 251 flow [2023-08-04 06:56:36,859 INFO L124 PetriNetUnfolderBase]: 6/236 cut-off events. [2023-08-04 06:56:36,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:36,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 236 events. 6/236 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 650 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-04 06:56:36,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 1388 [2023-08-04 06:56:42,354 INFO L134 LiptonReduction]: Checked pairs total: 4234 [2023-08-04 06:56:42,354 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-04 06:56:42,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:56:42,359 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;@10a9b6ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:56:42,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:56:42,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:56:42,363 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-08-04 06:56:42,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:42,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:56:42,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:56:42,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:56:42,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:56:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash 170074256, now seen corresponding path program 1 times [2023-08-04 06:56:42,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:56:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119432904] [2023-08-04 06:56:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:56:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:56:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:56:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:56:42,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:56:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119432904] [2023-08-04 06:56:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119432904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:56:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:56:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:56:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278049478] [2023-08-04 06:56:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:56:42,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:56:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:56:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:56:42,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:56:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2023-08-04 06:56:42,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2023-08-04 06:56:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:56:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2023-08-04 06:56:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:56:42,629 INFO L124 PetriNetUnfolderBase]: 651/1125 cut-off events. [2023-08-04 06:56:42,630 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 06:56:42,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1125 events. 651/1125 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5368 event pairs, 360 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 2292. Up to 1040 conditions per place. [2023-08-04 06:56:42,636 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 25 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-04 06:56:42,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 131 flow [2023-08-04 06:56:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:56:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:56:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-04 06:56:42,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546448087431694 [2023-08-04 06:56:42,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-04 06:56:42,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-04 06:56:42,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:56:42,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-04 06:56:42,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:56:42,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:56:42,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:56:42,642 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 69 flow. Second operand 3 states and 400 transitions. [2023-08-04 06:56:42,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 131 flow [2023-08-04 06:56:42,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:56:42,644 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 77 flow [2023-08-04 06:56:42,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=77, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-04 06:56:42,646 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 06:56:42,646 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 77 flow [2023-08-04 06:56:42,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2023-08-04 06:56:42,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:56:42,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:56:42,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 06:56:42,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:56:42,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:56:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash 160235695, now seen corresponding path program 1 times [2023-08-04 06:56:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:56:42,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368926923] [2023-08-04 06:56:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:56:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:56:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:56:42,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:56:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:56:42,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:56:42,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:56:42,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:56:42,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:56:42,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:56:42,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 06:56:42,710 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:56:42,710 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:56:42,711 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:56:42,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:56:42,762 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:56:42,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 380 flow [2023-08-04 06:56:42,921 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-04 06:56:42,925 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:56:42,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9558 event pairs, 0 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 1026. Up to 54 conditions per place. [2023-08-04 06:56:42,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 172 transitions, 380 flow [2023-08-04 06:56:42,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 171 transitions, 374 flow [2023-08-04 06:56:42,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:56:42,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 171 transitions, 374 flow [2023-08-04 06:56:42,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 171 transitions, 374 flow [2023-08-04 06:56:42,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 171 transitions, 374 flow [2023-08-04 06:56:43,157 INFO L124 PetriNetUnfolderBase]: 93/1402 cut-off events. [2023-08-04 06:56:43,157 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 06:56:43,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 1402 events. 93/1402 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9551 event pairs, 0 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 1023. Up to 54 conditions per place. [2023-08-04 06:56:43,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 6400 [2023-08-04 06:56:54,163 INFO L134 LiptonReduction]: Checked pairs total: 21942 [2023-08-04 06:56:54,163 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-04 06:56:54,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:56:54,165 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;@10a9b6ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:56:54,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-04 06:56:54,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:56:54,168 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-04 06:56:54,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:56:54,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:56:54,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:56:54,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-04 06:56:54,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:56:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1430497790, now seen corresponding path program 1 times [2023-08-04 06:56:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:56:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61098415] [2023-08-04 06:56:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:56:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:56:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:56:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:56:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:56:54,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61098415] [2023-08-04 06:56:54,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61098415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:56:54,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:56:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:56:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190199539] [2023-08-04 06:56:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:56:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:56:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:56:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:56:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:56:54,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 307 [2023-08-04 06:56:54,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-04 06:56:54,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:56:54,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 307 [2023-08-04 06:56:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:59:10,261 INFO L124 PetriNetUnfolderBase]: 694950/884209 cut-off events. [2023-08-04 06:59:10,262 INFO L125 PetriNetUnfolderBase]: For 15836/15836 co-relation queries the response was YES. [2023-08-04 06:59:12,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767543 conditions, 884209 events. 694950/884209 cut-off events. For 15836/15836 co-relation queries the response was YES. Maximal size of possible extension queue 19545. Compared 5779838 event pairs, 567528 based on Foata normal form. 0/737269 useless extension candidates. Maximal degree in co-relation 380680. Up to 864847 conditions per place. [2023-08-04 06:59:16,105 INFO L140 encePairwiseOnDemand]: 304/307 looper letters, 46 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-04 06:59:16,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 238 flow [2023-08-04 06:59:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:59:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:59:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-04 06:59:16,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50271444082519 [2023-08-04 06:59:16,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-04 06:59:16,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-04 06:59:16,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:59:16,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-04 06:59:16,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-08-04 06:59:16,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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) [2023-08-04 06:59:16,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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) [2023-08-04 06:59:16,112 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 132 flow. Second operand 3 states and 463 transitions. [2023-08-04 06:59:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 238 flow [2023-08-04 06:59:16,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 234 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 06:59:16,124 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 140 flow [2023-08-04 06:59:16,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-08-04 06:59:16,125 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-04 06:59:16,125 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 140 flow [2023-08-04 06:59:16,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-04 06:59:16,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:59:16,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:59:16,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:59:16,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-04 06:59:16,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:59:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1892708246, now seen corresponding path program 1 times [2023-08-04 06:59:16,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:59:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099625263] [2023-08-04 06:59:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:59:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:59:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:59:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:59:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:59:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099625263] [2023-08-04 06:59:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099625263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:59:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428714820] [2023-08-04 06:59:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:59:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:59:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:59:16,173 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) [2023-08-04 06:59:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:59:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:59:16,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:59:16,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:59:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:59:16,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:59:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:59:16,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428714820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:59:16,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:59:16,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:59:16,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814978530] [2023-08-04 06:59:16,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:59:16,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:59:16,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:59:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:59:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:59:16,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 307 [2023-08-04 06:59:16,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 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) [2023-08-04 06:59:16,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:59:16,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 307 [2023-08-04 06:59:16,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand