/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_mix037_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:04:07,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:04:07,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:04:07,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:04:07,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:04:07,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:04:07,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:04:07,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:04:07,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:04:07,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:04:07,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:04:07,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:04:07,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:04:07,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:04:07,414 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:04:07,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:04:07,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:04:07,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:04:07,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:04:07,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:04:07,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:04:07,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:04:07,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:04:07,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:04:07,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:04:07,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:04:07,416 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:04:07,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:04:07,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:04:07,417 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:04:07,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:04:07,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:04:07,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:04:07,420 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:04:07,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:04:07,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:04:07,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:04:07,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:04:07,713 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:04:07,714 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:04:07,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix037_tso.oepc_bound2.i [2023-08-04 06:04:08,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:04:09,161 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:04:09,161 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix037_tso.oepc_bound2.i [2023-08-04 06:04:09,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab007e6e/a6b40be965294cbaacc2608bdc57a81d/FLAG2662bb220 [2023-08-04 06:04:09,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab007e6e/a6b40be965294cbaacc2608bdc57a81d [2023-08-04 06:04:09,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:04:09,194 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:04:09,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:04:09,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:04:09,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:04:09,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1398f71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09, skipping insertion in model container [2023-08-04 06:04:09,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,280 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:04:09,436 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_mix037_tso.oepc_bound2.i[949,962] [2023-08-04 06:04:09,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:04:09,694 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:04:09,704 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_mix037_tso.oepc_bound2.i[949,962] [2023-08-04 06:04:09,712 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:04:09,714 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:04:09,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:04:09,786 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:04:09,786 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:04:09,795 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:04:09,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09 WrapperNode [2023-08-04 06:04:09,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:04:09,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:04:09,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:04:09,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:04:09,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,889 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 195 [2023-08-04 06:04:09,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:04:09,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:04:09,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:04:09,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:04:09,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:04:09,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:04:09,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:04:09,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:04:09,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (1/1) ... [2023-08-04 06:04:09,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:04:09,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:04:10,003 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 06:04:10,030 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 06:04:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:04:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:04:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:04:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:04:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:04:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:04:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:04:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:04:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:04:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:04:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:04:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:04:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:04:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:04:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:04:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:04:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:04:10,048 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 06:04:10,228 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:04:10,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:04:10,612 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:04:10,716 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:04:10,717 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:04:10,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:04:10 BoogieIcfgContainer [2023-08-04 06:04:10,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:04:10,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:04:10,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:04:10,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:04:10,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:04:09" (1/3) ... [2023-08-04 06:04:10,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46423bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:04:10, skipping insertion in model container [2023-08-04 06:04:10,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:04:09" (2/3) ... [2023-08-04 06:04:10,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46423bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:04:10, skipping insertion in model container [2023-08-04 06:04:10,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:04:10" (3/3) ... [2023-08-04 06:04:10,727 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix037_tso.oepc_bound2.i [2023-08-04 06:04:10,733 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:04:10,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:04:10,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:04:10,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:04:10,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:04:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:04:11,094 INFO L124 PetriNetUnfolderBase]: 62/943 cut-off events. [2023-08-04 06:04:11,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:11,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 943 events. 62/943 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5865 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 06:04:11,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:04:11,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 160 transitions, 338 flow [2023-08-04 06:04:11,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:04:11,136 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 160 transitions, 338 flow [2023-08-04 06:04:11,141 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 160 transitions, 338 flow [2023-08-04 06:04:11,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 338 flow [2023-08-04 06:04:11,270 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-04 06:04:11,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:11,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5851 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 06:04:11,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 4566 [2023-08-04 06:04:15,559 INFO L134 LiptonReduction]: Checked pairs total: 12529 [2023-08-04 06:04:15,559 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 06:04:15,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:04:15,578 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;@5b450b59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:04:15,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:04:15,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:04:15,583 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 06:04:15,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:15,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:04:15,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:04:15,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:04:15,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:04:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash 646113004, now seen corresponding path program 1 times [2023-08-04 06:04:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:04:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920777994] [2023-08-04 06:04:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:04:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:04:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:04:15,902 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 06:04:15,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:04:15,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920777994] [2023-08-04 06:04:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920777994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:04:15,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:04:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:04:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592063251] [2023-08-04 06:04:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:04:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:04:15,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:04:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:04:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:04:15,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 294 [2023-08-04 06:04:15,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 106 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 06:04:15,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:04:15,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 294 [2023-08-04 06:04:15,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:04:18,522 INFO L124 PetriNetUnfolderBase]: 14237/21204 cut-off events. [2023-08-04 06:04:18,523 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-04 06:04:18,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41547 conditions, 21204 events. 14237/21204 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 140397 event pairs, 9968 based on Foata normal form. 600/18316 useless extension candidates. Maximal degree in co-relation 41533. Up to 19930 conditions per place. [2023-08-04 06:04:18,718 INFO L140 encePairwiseOnDemand]: 290/294 looper letters, 36 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 06:04:18,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 190 flow [2023-08-04 06:04:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:04:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:04:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-04 06:04:18,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2023-08-04 06:04:18,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-04 06:04:18,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-04 06:04:18,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:04:18,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-04 06:04:18,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 06:04:18,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 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 06:04:18,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 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 06:04:18,758 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 106 flow. Second operand 3 states and 455 transitions. [2023-08-04 06:04:18,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 190 flow [2023-08-04 06:04:18,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:04:18,764 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 112 flow [2023-08-04 06:04:18,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 06:04:18,769 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-04 06:04:18,769 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 112 flow [2023-08-04 06:04:18,770 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 06:04:18,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:04:18,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:04:18,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:04:18,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:04:18,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:04:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1510543790, now seen corresponding path program 1 times [2023-08-04 06:04:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:04:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709665469] [2023-08-04 06:04:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:04:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:04:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:04:18,979 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 06:04:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:04:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709665469] [2023-08-04 06:04:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709665469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:04:18,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992288355] [2023-08-04 06:04:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:04:18,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:04:18,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:04:18,984 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 06:04:19,007 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 06:04:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:04:19,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:04:19,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:04:19,169 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 06:04:19,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:04:19,211 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 06:04:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992288355] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:04:19,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:04:19,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:04:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118358476] [2023-08-04 06:04:19,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:04:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:04:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:04:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:04:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:04:19,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-08-04 06:04:19,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 112 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 06:04:19,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:04:19,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-08-04 06:04:19,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:04:19,258 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:04:19,258 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 06:04:19,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 21 events. 6/21 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 2 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 52. Up to 14 conditions per place. [2023-08-04 06:04:19,259 INFO L140 encePairwiseOnDemand]: 291/294 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:04:19,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-04 06:04:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:04:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:04:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-08-04 06:04:19,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-04 06:04:19,261 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-08-04 06:04:19,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-08-04 06:04:19,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:04:19,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-08-04 06:04:19,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 06:04:19,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 06:04:19,267 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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 06:04:19,267 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 112 flow. Second operand 4 states and 560 transitions. [2023-08-04 06:04:19,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-04 06:04:19,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 06:04:19,268 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 06:04:19,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 06:04:19,269 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -35 predicate places. [2023-08-04 06:04:19,269 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 06:04:19,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 06:04:19,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:04:19,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:04:19,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:04:19,285 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 06:04:19,479 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 06:04:19,480 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:04:19,482 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:04:19,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:04:19,585 INFO L124 PetriNetUnfolderBase]: 62/943 cut-off events. [2023-08-04 06:04:19,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:19,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 943 events. 62/943 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5865 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-04 06:04:19,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 06:04:19,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 130 transitions, 280 flow [2023-08-04 06:04:19,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:04:19,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 130 transitions, 280 flow [2023-08-04 06:04:19,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 130 transitions, 280 flow [2023-08-04 06:04:19,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 130 transitions, 280 flow [2023-08-04 06:04:19,630 INFO L124 PetriNetUnfolderBase]: 14/447 cut-off events. [2023-08-04 06:04:19,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:19,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 447 events. 14/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2073 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2023-08-04 06:04:19,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 2658 [2023-08-04 06:04:23,221 INFO L134 LiptonReduction]: Checked pairs total: 7143 [2023-08-04 06:04:23,221 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-04 06:04:23,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:04:23,224 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;@5b450b59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:04:23,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:04:23,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:04:23,230 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:04:23,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:23,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:04:23,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:04:23,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:04:23,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:04:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1535989207, now seen corresponding path program 1 times [2023-08-04 06:04:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:04:23,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064260510] [2023-08-04 06:04:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:04:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:04:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:04:23,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:04:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:04:23,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:04:23,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:04:23,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:04:23,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:04:23,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:04:23,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:04:23,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 06:04:23,290 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:04:23,290 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:04:23,291 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:04:23,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:04:23,318 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:04:23,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 06:04:23,813 INFO L124 PetriNetUnfolderBase]: 282/4384 cut-off events. [2023-08-04 06:04:23,813 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:04:23,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 4384 events. 282/4384 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42815 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3152. Up to 162 conditions per place. [2023-08-04 06:04:23,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 06:04:23,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 195 transitions, 434 flow [2023-08-04 06:04:23,856 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:04:23,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 195 transitions, 434 flow [2023-08-04 06:04:23,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 195 transitions, 434 flow [2023-08-04 06:04:23,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 195 transitions, 434 flow [2023-08-04 06:04:24,335 INFO L124 PetriNetUnfolderBase]: 282/4383 cut-off events. [2023-08-04 06:04:24,336 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-04 06:04:24,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 4383 events. 282/4383 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42796 event pairs, 0 based on Foata normal form. 0/3894 useless extension candidates. Maximal degree in co-relation 3149. Up to 162 conditions per place. [2023-08-04 06:04:24,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 11292 [2023-08-04 06:04:28,196 INFO L134 LiptonReduction]: Checked pairs total: 39036 [2023-08-04 06:04:28,196 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 06:04:28,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:04:28,199 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;@5b450b59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:04:28,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:04:28,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:04:28,202 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 06:04:28,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:04:28,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:04:28,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:04:28,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:04:28,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:04:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1097529664, now seen corresponding path program 1 times [2023-08-04 06:04:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:04:28,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637135074] [2023-08-04 06:04:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:04:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:04:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:04:28,273 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 06:04:28,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:04:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637135074] [2023-08-04 06:04:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637135074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:04:28,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:04:28,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:04:28,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090792019] [2023-08-04 06:04:28,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:04:28,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:04:28,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:04:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:04:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:04:28,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 337 [2023-08-04 06:04:28,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 06:04:28,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:04:28,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 337 [2023-08-04 06:04:28,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand