/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_safe001_power.opt_pso.oepc_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:28:31,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:28:31,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:28:31,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:28:31,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:28:31,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:28:31,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:28:31,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:28:31,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:28:31,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:28:31,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:28:31,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:28:31,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:28:31,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:28:31,646 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:28:31,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:28:31,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:28:31,647 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:28:31,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:28:31,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:28:31,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:28:31,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:28:31,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:28:31,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:28:31,650 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:28:31,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:28:31,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:28:31,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:28:31,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:28:31,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:28:31,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:28:31,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:28:31,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:28:31,654 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:28:31,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:28:31,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:28:31,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:28:31,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:28:31,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:28:31,874 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:28:31,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe001_power.opt_pso.oepc_pso.opt_rmo.opt_bound2.i [2023-08-04 06:28:32,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:28:33,033 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:28:33,033 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe001_power.opt_pso.oepc_pso.opt_rmo.opt_bound2.i [2023-08-04 06:28:33,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38327acd1/ce46dd1463ac49a487c72feccfd1be1e/FLAG92630e36e [2023-08-04 06:28:33,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38327acd1/ce46dd1463ac49a487c72feccfd1be1e [2023-08-04 06:28:33,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:28:33,070 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:28:33,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:28:33,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:28:33,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:28:33,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b77f97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33, skipping insertion in model container [2023-08-04 06:28:33,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,105 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:28:33,228 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_safe001_power.opt_pso.oepc_pso.opt_rmo.opt_bound2.i[976,989] [2023-08-04 06:28:33,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:28:33,394 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:28:33,402 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_safe001_power.opt_pso.oepc_pso.opt_rmo.opt_bound2.i[976,989] [2023-08-04 06:28:33,419 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:28:33,420 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:28:33,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:28:33,463 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:28:33,463 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:28:33,467 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:28:33,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33 WrapperNode [2023-08-04 06:28:33,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:28:33,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:28:33,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:28:33,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:28:33,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,501 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2023-08-04 06:28:33,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:28:33,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:28:33,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:28:33,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:28:33,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:28:33,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:28:33,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:28:33,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:28:33,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (1/1) ... [2023-08-04 06:28:33,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:28:33,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:28:33,555 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 06:28:33,563 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 06:28:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:28:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:28:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:28:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:28:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:28:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:28:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:28:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:28:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:28:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:28:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:28:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:28:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:28:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:28:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:28:33,586 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 06:28:33,719 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:28:33,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:28:33,916 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:28:34,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:28:34,000 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:28:34,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:28:34 BoogieIcfgContainer [2023-08-04 06:28:34,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:28:34,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:28:34,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:28:34,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:28:34,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:28:33" (1/3) ... [2023-08-04 06:28:34,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6041d8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:28:34, skipping insertion in model container [2023-08-04 06:28:34,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:28:33" (2/3) ... [2023-08-04 06:28:34,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6041d8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:28:34, skipping insertion in model container [2023-08-04 06:28:34,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:28:34" (3/3) ... [2023-08-04 06:28:34,007 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe001_power.opt_pso.oepc_pso.opt_rmo.opt_bound2.i [2023-08-04 06:28:34,012 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:28:34,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:28:34,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:28:34,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:28:34,052 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:28:34,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-04 06:28:34,155 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-04 06:28:34,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:34,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1969 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-08-04 06:28:34,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 128 transitions, 271 flow [2023-08-04 06:28:34,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 127 transitions, 267 flow [2023-08-04 06:28:34,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:28:34,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 127 transitions, 267 flow [2023-08-04 06:28:34,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 127 transitions, 267 flow [2023-08-04 06:28:34,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 267 flow [2023-08-04 06:28:34,215 INFO L124 PetriNetUnfolderBase]: 30/447 cut-off events. [2023-08-04 06:28:34,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:34,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 447 events. 30/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1963 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-04 06:28:34,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 2684 [2023-08-04 06:28:37,018 INFO L134 LiptonReduction]: Checked pairs total: 6760 [2023-08-04 06:28:37,018 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-04 06:28:37,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:28:37,031 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;@10a7e8a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:28:37,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:28:37,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:28:37,035 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-04 06:28:37,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:37,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:28:37,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:28:37,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:28:37,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:28:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 533576097, now seen corresponding path program 1 times [2023-08-04 06:28:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:28:37,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115369202] [2023-08-04 06:28:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:37,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:28:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:28:37,238 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 06:28:37,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:28:37,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115369202] [2023-08-04 06:28:37,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115369202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:28:37,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:28:37,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:28:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689680220] [2023-08-04 06:28:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:28:37,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:28:37,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:28:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:28:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:28:37,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 237 [2023-08-04 06:28:37,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 06:28:37,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:28:37,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 237 [2023-08-04 06:28:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:28:37,746 INFO L124 PetriNetUnfolderBase]: 2161/3460 cut-off events. [2023-08-04 06:28:37,747 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 06:28:37,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 3460 events. 2161/3460 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19635 event pairs, 1312 based on Foata normal form. 120/2980 useless extension candidates. Maximal degree in co-relation 6845. Up to 3294 conditions per place. [2023-08-04 06:28:37,768 INFO L140 encePairwiseOnDemand]: 233/237 looper letters, 29 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-04 06:28:37,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 151 flow [2023-08-04 06:28:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:28:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:28:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-04 06:28:37,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035161744022504 [2023-08-04 06:28:37,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-04 06:28:37,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-04 06:28:37,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:28:37,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-04 06:28:37,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 06:28:37,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 06:28:37,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 06:28:37,802 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 81 flow. Second operand 3 states and 358 transitions. [2023-08-04 06:28:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 151 flow [2023-08-04 06:28:37,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 151 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:28:37,807 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 87 flow [2023-08-04 06:28:37,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-04 06:28:37,810 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-04 06:28:37,811 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 87 flow [2023-08-04 06:28:37,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 06:28:37,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:28:37,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:28:37,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:28:37,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:28:37,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:28:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash 320803089, now seen corresponding path program 1 times [2023-08-04 06:28:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:28:37,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144332058] [2023-08-04 06:28:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:28:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:28:37,919 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 06:28:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:28:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144332058] [2023-08-04 06:28:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144332058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:28:37,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614988268] [2023-08-04 06:28:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:37,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:28:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:28:37,922 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 06:28:37,954 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 06:28:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:28:38,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:28:38,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:28:38,073 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 06:28:38,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:28:38,092 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 06:28:38,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614988268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:28:38,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:28:38,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:28:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950876551] [2023-08-04 06:28:38,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:28:38,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:28:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:28:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:28:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:28:38,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 237 [2023-08-04 06:28:38,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 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 06:28:38,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:28:38,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 237 [2023-08-04 06:28:38,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:28:38,129 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:28:38,129 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:28:38,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 21 events. 6/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 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 06:28:38,132 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:28:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 55 flow [2023-08-04 06:28:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:28:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:28:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-08-04 06:28:38,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641350210970464 [2023-08-04 06:28:38,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-08-04 06:28:38,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-08-04 06:28:38,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:28:38,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-08-04 06:28:38,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 06:28:38,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 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 06:28:38,142 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 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 06:28:38,142 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 87 flow. Second operand 4 states and 440 transitions. [2023-08-04 06:28:38,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 55 flow [2023-08-04 06:28:38,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 06:28:38,143 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 06:28:38,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=13, 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=16, PETRI_TRANSITIONS=0} [2023-08-04 06:28:38,144 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -24 predicate places. [2023-08-04 06:28:38,145 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 06:28:38,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 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 06:28:38,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:28:38,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:28:38,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:28:38,156 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 06:28:38,353 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 06:28:38,354 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:28:38,355 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:28:38,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-04 06:28:38,381 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-04 06:28:38,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1969 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-08-04 06:28:38,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 128 transitions, 271 flow [2023-08-04 06:28:38,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 99 transitions, 213 flow [2023-08-04 06:28:38,383 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:28:38,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 99 transitions, 213 flow [2023-08-04 06:28:38,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 99 transitions, 213 flow [2023-08-04 06:28:38,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 213 flow [2023-08-04 06:28:38,392 INFO L124 PetriNetUnfolderBase]: 6/216 cut-off events. [2023-08-04 06:28:38,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:38,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 216 events. 6/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 631 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2023-08-04 06:28:38,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 1422 [2023-08-04 06:28:40,674 INFO L134 LiptonReduction]: Checked pairs total: 3955 [2023-08-04 06:28:40,675 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-04 06:28:40,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:28:40,677 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;@10a7e8a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:28:40,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:28:40,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:28:40,679 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 06:28:40,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:40,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:28:40,680 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:28:40,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:28:40,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:28:40,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1668415380, now seen corresponding path program 1 times [2023-08-04 06:28:40,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:28:40,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727899102] [2023-08-04 06:28:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:28:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:28:40,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:28:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:28:40,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:28:40,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:28:40,741 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:28:40,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:28:40,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:28:40,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 06:28:40,742 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:28:40,745 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:28:40,746 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:28:40,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:28:40,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:28:40,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-04 06:28:40,883 INFO L124 PetriNetUnfolderBase]: 93/1380 cut-off events. [2023-08-04 06:28:40,883 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:28:40,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 1380 events. 93/1380 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9515 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1003. Up to 54 conditions per place. [2023-08-04 06:28:40,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 153 transitions, 342 flow [2023-08-04 06:28:40,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 152 transitions, 336 flow [2023-08-04 06:28:40,890 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:28:40,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 152 transitions, 336 flow [2023-08-04 06:28:40,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 152 transitions, 336 flow [2023-08-04 06:28:40,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 336 flow [2023-08-04 06:28:41,000 INFO L124 PetriNetUnfolderBase]: 93/1379 cut-off events. [2023-08-04 06:28:41,000 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 06:28:41,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1379 events. 93/1379 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9499 event pairs, 0 based on Foata normal form. 0/1214 useless extension candidates. Maximal degree in co-relation 1000. Up to 54 conditions per place. [2023-08-04 06:28:41,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 6468 [2023-08-04 06:28:43,717 INFO L134 LiptonReduction]: Checked pairs total: 18542 [2023-08-04 06:28:43,718 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-04 06:28:43,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:28:43,720 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;@10a7e8a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:28:43,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:28:43,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:28:43,722 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-08-04 06:28:43,722 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:28:43,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:28:43,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:28:43,723 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 06:28:43,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:28:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash 887709496, now seen corresponding path program 1 times [2023-08-04 06:28:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:28:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100673691] [2023-08-04 06:28:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:28:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:28:43,756 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 06:28:43,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:28:43,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100673691] [2023-08-04 06:28:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100673691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:28:43,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:28:43,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:28:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668645850] [2023-08-04 06:28:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:28:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:28:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:28:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:28:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:28:43,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 268 [2023-08-04 06:28:43,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 06:28:43,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:28:43,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 268 [2023-08-04 06:28:43,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:29:31,229 INFO L124 PetriNetUnfolderBase]: 468866/614566 cut-off events. [2023-08-04 06:29:31,229 INFO L125 PetriNetUnfolderBase]: For 9552/9552 co-relation queries the response was YES. [2023-08-04 06:29:32,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214216 conditions, 614566 events. 468866/614566 cut-off events. For 9552/9552 co-relation queries the response was YES. Maximal size of possible extension queue 15255. Compared 4395353 event pairs, 380024 based on Foata normal form. 13020/544125 useless extension candidates. Maximal degree in co-relation 261782. Up to 587323 conditions per place. [2023-08-04 06:29:34,863 INFO L140 encePairwiseOnDemand]: 264/268 looper letters, 44 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-04 06:29:34,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 238 flow [2023-08-04 06:29:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:29:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:29:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-04 06:29:34,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261194029850746 [2023-08-04 06:29:34,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-04 06:29:34,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-04 06:29:34,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:29:34,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-04 06:29:34,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 06:29:34,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 06:29:34,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 06:29:34,869 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 138 flow. Second operand 3 states and 423 transitions. [2023-08-04 06:29:34,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 238 flow [2023-08-04 06:29:34,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 234 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 06:29:34,880 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 144 flow [2023-08-04 06:29:34,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2023-08-04 06:29:34,881 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2023-08-04 06:29:34,881 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 144 flow [2023-08-04 06:29:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 06:29:34,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:29:34,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:29:34,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 06:29:34,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:29:34,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:29:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash -592713221, now seen corresponding path program 1 times [2023-08-04 06:29:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:29:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381979796] [2023-08-04 06:29:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:29:34,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:29:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:29:34,912 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 06:29:34,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:29:34,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381979796] [2023-08-04 06:29:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381979796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:29:34,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081085813] [2023-08-04 06:29:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:29:34,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:29:34,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:29:34,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:29:34,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:29:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:29:34,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:29:34,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:29:34,994 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 06:29:34,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:29:35,006 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 06:29:35,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081085813] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:29:35,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:29:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:29:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085540228] [2023-08-04 06:29:35,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:29:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:29:35,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:29:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:29:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:29:35,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 268 [2023-08-04 06:29:35,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 06:29:35,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:29:35,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 268 [2023-08-04 06:29:35,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:30:13,450 INFO L124 PetriNetUnfolderBase]: 389314/506030 cut-off events. [2023-08-04 06:30:13,451 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2023-08-04 06:30:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998719 conditions, 506030 events. 389314/506030 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 13483. Compared 3483839 event pairs, 247180 based on Foata normal form. 4/439361 useless extension candidates. Maximal degree in co-relation 261517. Up to 484009 conditions per place. [2023-08-04 06:30:17,742 INFO L140 encePairwiseOnDemand]: 264/268 looper letters, 49 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2023-08-04 06:30:17,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 272 flow [2023-08-04 06:30:17,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:30:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:30:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-08-04 06:30:17,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130597014925373 [2023-08-04 06:30:17,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-08-04 06:30:17,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-08-04 06:30:17,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:30:17,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-08-04 06:30:17,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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 06:30:17,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 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 06:30:17,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 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 06:30:17,748 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 144 flow. Second operand 4 states and 550 transitions. [2023-08-04 06:30:17,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 272 flow [2023-08-04 06:30:17,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:30:17,750 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 156 flow [2023-08-04 06:30:17,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-04 06:30:17,751 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2023-08-04 06:30:17,751 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 156 flow [2023-08-04 06:30:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 06:30:17,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:30:17,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:30:17,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 06:30:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:30:17,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:30:17,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:30:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1413769601, now seen corresponding path program 1 times [2023-08-04 06:30:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:30:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311383837] [2023-08-04 06:30:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:30:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:30:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:30:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:30:18,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:30:18,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311383837] [2023-08-04 06:30:18,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311383837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:30:18,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:30:18,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:30:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176826683] [2023-08-04 06:30:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:30:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:30:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:30:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:30:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:30:18,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 268 [2023-08-04 06:30:18,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 06:30:18,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:30:18,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 268 [2023-08-04 06:30:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:30:49,891 INFO L124 PetriNetUnfolderBase]: 335018/438311 cut-off events. [2023-08-04 06:30:49,891 INFO L125 PetriNetUnfolderBase]: For 5808/5808 co-relation queries the response was YES. [2023-08-04 06:30:51,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862424 conditions, 438311 events. 335018/438311 cut-off events. For 5808/5808 co-relation queries the response was YES. Maximal size of possible extension queue 11794. Compared 3071636 event pairs, 55610 based on Foata normal form. 0/388614 useless extension candidates. Maximal degree in co-relation 410533. Up to 383649 conditions per place. [2023-08-04 06:30:52,687 INFO L140 encePairwiseOnDemand]: 263/268 looper letters, 67 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-04 06:30:52,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 365 flow [2023-08-04 06:30:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:30:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:30:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-04 06:30:52,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659203980099502 [2023-08-04 06:30:52,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-04 06:30:52,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-04 06:30:52,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:30:52,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-04 06:30:52,690 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 06:30:52,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 06:30:52,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 06:30:52,691 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 156 flow. Second operand 3 states and 455 transitions. [2023-08-04 06:30:52,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 365 flow [2023-08-04 06:30:52,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 358 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:30:52,694 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 170 flow [2023-08-04 06:30:52,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2023-08-04 06:30:52,695 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2023-08-04 06:30:52,695 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 170 flow [2023-08-04 06:30:52,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 06:30:52,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:30:52,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:30:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:30:52,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:30:52,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:30:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1414251943, now seen corresponding path program 1 times [2023-08-04 06:30:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:30:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260846506] [2023-08-04 06:30:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:30:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:30:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:30:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:30:52,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:30:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260846506] [2023-08-04 06:30:52,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260846506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:30:52,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:30:52,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 06:30:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716640308] [2023-08-04 06:30:52,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:30:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:30:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:30:52,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:30:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:30:52,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 268 [2023-08-04 06:30:52,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 06:30:52,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:30:52,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 268 [2023-08-04 06:30:52,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand