/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:44:27,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:44:27,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:44:27,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:44:27,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:44:27,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:44:27,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:44:27,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:44:27,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:44:27,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:44:27,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:44:27,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:44:27,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:44:27,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:44:27,239 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:44:27,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:44:27,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:44:27,240 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:44:27,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:44:27,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:44:27,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:44:27,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:44:27,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:44:27,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:44:27,241 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:44:27,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:44:27,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:44:27,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:44:27,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:44:27,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:44:27,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:44:27,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:44:27,243 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:44:27,244 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:44:27,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:44:27,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:44:27,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:44:27,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:44:27,399 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:44:27,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:44:28,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:44:28,498 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:44:28,498 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:44:28,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcdd0b9bf/8bfe50e3cb914c63be0b70a0fb9ad2b6/FLAG34eeb75a3 [2023-08-03 18:44:28,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcdd0b9bf/8bfe50e3cb914c63be0b70a0fb9ad2b6 [2023-08-03 18:44:28,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:44:28,521 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:44:28,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:44:28,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:44:28,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:44:28,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2403fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28, skipping insertion in model container [2023-08-03 18:44:28,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,554 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:44:28,681 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_safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[996,1009] [2023-08-03 18:44:28,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:44:28,834 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:44:28,843 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_safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[996,1009] [2023-08-03 18:44:28,854 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:44:28,855 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:44:28,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:44:28,902 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:44:28,902 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:44:28,907 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:44:28,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28 WrapperNode [2023-08-03 18:44:28,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:44:28,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:44:28,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:44:28,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:44:28,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,962 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-08-03 18:44:28,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:44:28,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:44:28,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:44:28,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:44:28,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:44:28,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:44:28,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:44:28,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:44:28,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (1/1) ... [2023-08-03 18:44:28,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:44:29,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:44:29,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 18:44:29,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 18:44:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:44:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:44:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:44:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:44:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:44:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:44:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:44:29,045 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:44:29,134 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:44:29,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:44:29,312 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:44:29,382 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:44:29,382 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:44:29,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:44:29 BoogieIcfgContainer [2023-08-03 18:44:29,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:44:29,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:44:29,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:44:29,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:44:29,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:44:28" (1/3) ... [2023-08-03 18:44:29,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7b8cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:44:29, skipping insertion in model container [2023-08-03 18:44:29,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:44:28" (2/3) ... [2023-08-03 18:44:29,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7b8cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:44:29, skipping insertion in model container [2023-08-03 18:44:29,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:44:29" (3/3) ... [2023-08-03 18:44:29,388 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:44:29,393 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:44:29,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:44:29,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:44:29,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:44:29,435 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:44:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-03 18:44:29,602 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-03 18:44:29,603 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:44:29,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 445 events. 30/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1957 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 266. Up to 16 conditions per place. [2023-08-03 18:44:29,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-03 18:44:29,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 127 transitions, 269 flow [2023-08-03 18:44:29,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:44:29,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 127 transitions, 269 flow [2023-08-03 18:44:29,626 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 127 transitions, 269 flow [2023-08-03 18:44:29,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-03 18:44:29,669 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-03 18:44:29,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:44:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 445 events. 30/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1957 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 266. Up to 16 conditions per place. [2023-08-03 18:44:29,675 INFO L119 LiptonReduction]: Number of co-enabled transitions 2590 [2023-08-03 18:44:32,189 INFO L134 LiptonReduction]: Checked pairs total: 6372 [2023-08-03 18:44:32,190 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-03 18:44:32,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:44:32,202 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;@35038f74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:44:32,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:44:32,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:44:32,205 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-03 18:44:32,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:44:32,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:44:32,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:44:32,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:44:32,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:44:32,209 INFO L85 PathProgramCache]: Analyzing trace with hash 17066288, now seen corresponding path program 1 times [2023-08-03 18:44:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:44:32,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92967358] [2023-08-03 18:44:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:32,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:44:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:44:32,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:44:32,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92967358] [2023-08-03 18:44:32,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92967358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:44:32,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:44:32,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:44:32,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181509037] [2023-08-03 18:44:32,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:44:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:44:32,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:44:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:44:32,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:44:32,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 234 [2023-08-03 18:44:32,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:32,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:44:32,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 234 [2023-08-03 18:44:32,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:44:32,889 INFO L124 PetriNetUnfolderBase]: 2468/4176 cut-off events. [2023-08-03 18:44:32,890 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-03 18:44:32,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4176 events. 2468/4176 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 24801 event pairs, 650 based on Foata normal form. 150/3846 useless extension candidates. Maximal degree in co-relation 6886. Up to 2665 conditions per place. [2023-08-03 18:44:32,906 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 45 selfloop transitions, 2 changer transitions 4/55 dead transitions. [2023-08-03 18:44:32,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 233 flow [2023-08-03 18:44:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:44:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:44:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-03 18:44:32,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2023-08-03 18:44:32,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-03 18:44:32,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-03 18:44:32,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:44:32,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-03 18:44:32,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:32,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:32,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:32,924 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 83 flow. Second operand 3 states and 384 transitions. [2023-08-03 18:44:32,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 233 flow [2023-08-03 18:44:32,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:44:32,927 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 79 flow [2023-08-03 18:44:32,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-03 18:44:32,930 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-03 18:44:32,930 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 79 flow [2023-08-03 18:44:32,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:32,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:44:32,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:44:32,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:44:32,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:44:32,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:44:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash -779086796, now seen corresponding path program 1 times [2023-08-03 18:44:32,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:44:32,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601031182] [2023-08-03 18:44:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:32,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:44:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:44:32,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:44:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:44:32,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:44:32,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:44:32,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:44:32,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:44:32,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:44:32,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:44:32,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:44:32,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:44:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:44:32,964 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:44:32,965 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:44:32,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:44:32,994 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:44:33,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 338 flow [2023-08-03 18:44:33,099 INFO L124 PetriNetUnfolderBase]: 93/1370 cut-off events. [2023-08-03 18:44:33,100 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:44:33,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1370 events. 93/1370 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9415 event pairs, 0 based on Foata normal form. 0/1209 useless extension candidates. Maximal degree in co-relation 993. Up to 54 conditions per place. [2023-08-03 18:44:33,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 151 transitions, 338 flow [2023-08-03 18:44:33,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 151 transitions, 338 flow [2023-08-03 18:44:33,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:44:33,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 151 transitions, 338 flow [2023-08-03 18:44:33,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 151 transitions, 338 flow [2023-08-03 18:44:33,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 338 flow [2023-08-03 18:44:33,183 INFO L124 PetriNetUnfolderBase]: 93/1370 cut-off events. [2023-08-03 18:44:33,183 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:44:33,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1370 events. 93/1370 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9415 event pairs, 0 based on Foata normal form. 0/1209 useless extension candidates. Maximal degree in co-relation 993. Up to 54 conditions per place. [2023-08-03 18:44:33,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 6192 [2023-08-03 18:44:35,782 INFO L134 LiptonReduction]: Checked pairs total: 17410 [2023-08-03 18:44:35,782 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 18:44:35,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:44:35,784 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;@35038f74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:44:35,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:44:35,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:44:35,786 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-03 18:44:35,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:44:35,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:44:35,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:44:35,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:44:35,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:44:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash 26027944, now seen corresponding path program 1 times [2023-08-03 18:44:35,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:44:35,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741437663] [2023-08-03 18:44:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:44:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:44:35,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:44:35,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741437663] [2023-08-03 18:44:35,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741437663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:44:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:44:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:44:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833786601] [2023-08-03 18:44:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:44:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:44:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:44:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:44:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:44:35,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-03 18:44:35,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:35,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:44:35,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-03 18:44:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:45:35,906 INFO L124 PetriNetUnfolderBase]: 633758/828919 cut-off events. [2023-08-03 18:45:35,906 INFO L125 PetriNetUnfolderBase]: For 9533/9533 co-relation queries the response was YES. [2023-08-03 18:45:37,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632434 conditions, 828919 events. 633758/828919 cut-off events. For 9533/9533 co-relation queries the response was YES. Maximal size of possible extension queue 17748. Compared 5902715 event pairs, 105182 based on Foata normal form. 17577/751823 useless extension candidates. Maximal degree in co-relation 1375898. Up to 729279 conditions per place. [2023-08-03 18:45:40,139 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 75 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-03 18:45:40,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 385 flow [2023-08-03 18:45:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:45:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:45:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-03 18:45:40,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705368289637952 [2023-08-03 18:45:40,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-03 18:45:40,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-03 18:45:40,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:45:40,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-03 18:45:40,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:40,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:40,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:40,145 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 140 flow. Second operand 3 states and 457 transitions. [2023-08-03 18:45:40,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 385 flow [2023-08-03 18:45:40,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 379 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:45:40,151 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 153 flow [2023-08-03 18:45:40,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-08-03 18:45:40,152 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-03 18:45:40,152 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 153 flow [2023-08-03 18:45:40,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:40,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:45:40,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:45:40,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:45:40,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:45:40,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:45:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2023091032, now seen corresponding path program 1 times [2023-08-03 18:45:40,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:45:40,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064964423] [2023-08-03 18:45:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:45:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:45:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:45:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:45:40,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:45:40,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064964423] [2023-08-03 18:45:40,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064964423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:45:40,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:45:40,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:45:40,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036664128] [2023-08-03 18:45:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:45:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:45:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:45:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:45:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:45:40,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 267 [2023-08-03 18:45:40,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:40,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:45:40,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 267 [2023-08-03 18:45:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand