/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/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:28:21,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:28:21,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:28:21,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:28:21,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:28:21,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:28:21,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:28:21,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:28:21,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:28:21,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:28:21,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:28:21,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:28:21,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:28:21,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:28:21,544 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:28:21,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:28:21,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:28:21,545 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:28:21,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:28:21,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:28:21,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:28:21,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:28:21,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:28:21,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:28:21,547 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:28:21,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:28:21,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:28:21,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:28:21,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:28:21,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:28:21,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:28:21,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:28:21,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:28:21,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:28:21,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:28:21,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:28:21,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:28:21,550 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:28:21,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:28:21,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:28:21,551 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:28:21,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:28:21,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:28:21,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:28:21,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:28:21,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:28:21,754 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:28:21,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i [2023-08-04 04:28:22,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:28:23,154 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:28:23,155 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i [2023-08-04 04:28:23,168 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d018472/16eb75fe40b748b885874b380edc821e/FLAG31b01f0f3 [2023-08-04 04:28:23,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d018472/16eb75fe40b748b885874b380edc821e [2023-08-04 04:28:23,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:28:23,193 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:28:23,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:28:23,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:28:23,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:28:23,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d31e275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23, skipping insertion in model container [2023-08-04 04:28:23,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,230 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:28:23,370 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-04 04:28:23,467 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i[31163,31176] [2023-08-04 04:28:23,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:28:23,485 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:28:23,511 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-04 04:28:23,521 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-04 04:28:23,523 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-04 04:28:23,535 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_40_barrier_vf_bound2.i[31163,31176] [2023-08-04 04:28:23,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:28:23,578 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:28:23,578 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:28:23,579 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:28:23,584 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:28:23,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23 WrapperNode [2023-08-04 04:28:23,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:28:23,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:28:23,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:28:23,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:28:23,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,636 INFO L138 Inliner]: procedures = 174, calls = 25, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 82 [2023-08-04 04:28:23,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:28:23,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:28:23,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:28:23,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:28:23,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:28:23,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:28:23,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:28:23,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:28:23,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (1/1) ... [2023-08-04 04:28:23,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:28:23,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:28:23,699 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 04:28:23,703 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 04:28:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:28:23,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:28:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:28:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:28:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:28:23,733 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 04:28:23,836 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:28:23,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:28:24,033 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:28:24,121 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:28:24,121 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:28:24,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:28:24 BoogieIcfgContainer [2023-08-04 04:28:24,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:28:24,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:28:24,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:28:24,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:28:24,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:28:23" (1/3) ... [2023-08-04 04:28:24,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0db767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:28:24, skipping insertion in model container [2023-08-04 04:28:24,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:23" (2/3) ... [2023-08-04 04:28:24,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0db767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:28:24, skipping insertion in model container [2023-08-04 04:28:24,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:28:24" (3/3) ... [2023-08-04 04:28:24,132 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_40_barrier_vf_bound2.i [2023-08-04 04:28:24,139 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:28:24,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:28:24,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:28:24,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:28:24,189 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:28:24,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:24,259 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-04 04:28:24,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 4/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2023-08-04 04:28:24,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:24,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:24,270 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:24,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:24,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:24,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:24,296 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-04 04:28:24,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:24,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 4/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2023-08-04 04:28:24,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 704 [2023-08-04 04:28:26,442 INFO L134 LiptonReduction]: Checked pairs total: 572 [2023-08-04 04:28:26,442 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-04 04:28:26,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:28:26,459 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;@7c0ce504, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:26,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:28:26,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:26,462 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-04 04:28:26,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:26,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:26,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:28:26,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:26,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash 9833958, now seen corresponding path program 1 times [2023-08-04 04:28:26,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289946957] [2023-08-04 04:28:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:26,819 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 04:28:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289946957] [2023-08-04 04:28:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289946957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:26,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:26,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:28:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524103884] [2023-08-04 04:28:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:26,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:28:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:28:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:28:26,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-08-04 04:28:26,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 04:28:26,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:26,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-08-04 04:28:26,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:26,898 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:28:26,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:26,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 4/10 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-04 04:28:26,899 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-04 04:28:26,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 27 flow [2023-08-04 04:28:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:28:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:28:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2023-08-04 04:28:26,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956386292834891 [2023-08-04 04:28:26,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2023-08-04 04:28:26,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2023-08-04 04:28:26,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:26,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2023-08-04 04:28:26,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 04:28:26,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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 04:28:26,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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 04:28:26,925 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 3 states and 127 transitions. [2023-08-04 04:28:26,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 27 flow [2023-08-04 04:28:26,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:28:26,928 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-04 04:28:26,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-04 04:28:26,933 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2023-08-04 04:28:26,933 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-04 04:28:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 04:28:26,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:28:26,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:28:26,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:28:26,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:28:26,942 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:28:26,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:26,968 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-04 04:28:26,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:26,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 4/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2023-08-04 04:28:26,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:26,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:26,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:26,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:26,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 111 flow [2023-08-04 04:28:26,990 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2023-08-04 04:28:26,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:26,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 4/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2023-08-04 04:28:26,992 INFO L119 LiptonReduction]: Number of co-enabled transitions 704 [2023-08-04 04:28:28,905 INFO L134 LiptonReduction]: Checked pairs total: 571 [2023-08-04 04:28:28,905 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-04 04:28:28,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:28:28,908 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;@7c0ce504, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:28,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:28:28,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:28,910 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 04:28:28,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:28,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:28,911 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:28:28,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:28:28,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1864431688, now seen corresponding path program 1 times [2023-08-04 04:28:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:28,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417435981] [2023-08-04 04:28:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:28:28,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:28:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:28:28,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:28:28,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:28:28,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:28:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:28:28,952 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:28:28,953 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:28:28,953 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:28:28,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:28:28,967 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:28:28,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:28,981 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-08-04 04:28:28,982 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:28,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-08-04 04:28:28,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:28,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:28,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:28,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:28,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:28,995 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-08-04 04:28:28,995 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:28,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-08-04 04:28:28,998 INFO L119 LiptonReduction]: Number of co-enabled transitions 2420 [2023-08-04 04:28:29,815 INFO L134 LiptonReduction]: Checked pairs total: 8108 [2023-08-04 04:28:29,815 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-04 04:28:29,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:28:29,819 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;@7c0ce504, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:29,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:28:29,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:29,823 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-08-04 04:28:29,823 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:29,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:29,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:29,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:29,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash 92643851, now seen corresponding path program 1 times [2023-08-04 04:28:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392165237] [2023-08-04 04:28:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:29,923 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 04:28:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392165237] [2023-08-04 04:28:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392165237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:29,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:29,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:28:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875080389] [2023-08-04 04:28:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:28:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:28:29,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:28:29,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 127 [2023-08-04 04:28:29,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 04:28:29,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:29,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 127 [2023-08-04 04:28:29,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:30,357 INFO L124 PetriNetUnfolderBase]: 1555/2715 cut-off events. [2023-08-04 04:28:30,357 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-04 04:28:30,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 2715 events. 1555/2715 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16543 event pairs, 241 based on Foata normal form. 0/2342 useless extension candidates. Maximal degree in co-relation 4791. Up to 1001 conditions per place. [2023-08-04 04:28:30,374 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 85 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2023-08-04 04:28:30,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 110 transitions, 453 flow [2023-08-04 04:28:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:28:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:28:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 447 transitions. [2023-08-04 04:28:30,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028121484814398 [2023-08-04 04:28:30,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 447 transitions. [2023-08-04 04:28:30,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 447 transitions. [2023-08-04 04:28:30,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:30,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 447 transitions. [2023-08-04 04:28:30,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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 04:28:30,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 04:28:30,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 04:28:30,391 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 7 states and 447 transitions. [2023-08-04 04:28:30,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 110 transitions, 453 flow [2023-08-04 04:28:30,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 110 transitions, 451 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:28:30,395 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 210 flow [2023-08-04 04:28:30,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2023-08-04 04:28:30,396 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2023-08-04 04:28:30,397 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 210 flow [2023-08-04 04:28:30,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 04:28:30,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:30,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:30,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:28:30,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:30,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash -246502098, now seen corresponding path program 1 times [2023-08-04 04:28:30,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:30,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372635460] [2023-08-04 04:28:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:30,551 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 04:28:30,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:30,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372635460] [2023-08-04 04:28:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372635460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:30,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:28:30,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554814139] [2023-08-04 04:28:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:30,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:28:30,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:30,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:28:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:28:30,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 127 [2023-08-04 04:28:30,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 04:28:30,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:30,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 127 [2023-08-04 04:28:30,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:30,735 INFO L124 PetriNetUnfolderBase]: 996/1822 cut-off events. [2023-08-04 04:28:30,735 INFO L125 PetriNetUnfolderBase]: For 846/906 co-relation queries the response was YES. [2023-08-04 04:28:30,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 1822 events. 996/1822 cut-off events. For 846/906 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10704 event pairs, 439 based on Foata normal form. 121/1708 useless extension candidates. Maximal degree in co-relation 3297. Up to 874 conditions per place. [2023-08-04 04:28:30,748 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 45 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-08-04 04:28:30,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 376 flow [2023-08-04 04:28:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:28:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:28:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2023-08-04 04:28:30,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5249343832020997 [2023-08-04 04:28:30,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2023-08-04 04:28:30,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2023-08-04 04:28:30,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:30,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2023-08-04 04:28:30,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 04:28:30,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 04:28:30,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 04:28:30,752 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 210 flow. Second operand 3 states and 200 transitions. [2023-08-04 04:28:30,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 376 flow [2023-08-04 04:28:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:28:30,759 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 237 flow [2023-08-04 04:28:30,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-08-04 04:28:30,760 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2023-08-04 04:28:30,760 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 237 flow [2023-08-04 04:28:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 04:28:30,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:30,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:30,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:28:30,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:30,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1827031976, now seen corresponding path program 1 times [2023-08-04 04:28:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:30,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975771464] [2023-08-04 04:28:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:28:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975771464] [2023-08-04 04:28:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975771464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:30,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:30,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:28:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427763902] [2023-08-04 04:28:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:30,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:28:30,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:30,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:28:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:28:30,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 127 [2023-08-04 04:28:30,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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 04:28:30,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:30,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 127 [2023-08-04 04:28:30,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:31,045 INFO L124 PetriNetUnfolderBase]: 796/1408 cut-off events. [2023-08-04 04:28:31,046 INFO L125 PetriNetUnfolderBase]: For 857/893 co-relation queries the response was YES. [2023-08-04 04:28:31,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 1408 events. 796/1408 cut-off events. For 857/893 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7269 event pairs, 263 based on Foata normal form. 52/1297 useless extension candidates. Maximal degree in co-relation 3320. Up to 614 conditions per place. [2023-08-04 04:28:31,053 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 68 selfloop transitions, 14 changer transitions 11/103 dead transitions. [2023-08-04 04:28:31,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 103 transitions, 570 flow [2023-08-04 04:28:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:28:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:28:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 414 transitions. [2023-08-04 04:28:31,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46569178852643417 [2023-08-04 04:28:31,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 414 transitions. [2023-08-04 04:28:31,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 414 transitions. [2023-08-04 04:28:31,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:31,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 414 transitions. [2023-08-04 04:28:31,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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 04:28:31,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 04:28:31,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 04:28:31,058 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 237 flow. Second operand 7 states and 414 transitions. [2023-08-04 04:28:31,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 103 transitions, 570 flow [2023-08-04 04:28:31,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 103 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:28:31,065 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 292 flow [2023-08-04 04:28:31,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-04 04:28:31,067 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-08-04 04:28:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 292 flow [2023-08-04 04:28:31,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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 04:28:31,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:31,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:31,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:28:31,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:31,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash -886695201, now seen corresponding path program 1 times [2023-08-04 04:28:31,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:31,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744721862] [2023-08-04 04:28:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:31,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:28:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744721862] [2023-08-04 04:28:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744721862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:31,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:31,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:28:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387012343] [2023-08-04 04:28:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:31,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:28:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:28:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:28:31,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 127 [2023-08-04 04:28:31,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 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 04:28:31,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:31,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 127 [2023-08-04 04:28:31,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:31,497 INFO L124 PetriNetUnfolderBase]: 646/1154 cut-off events. [2023-08-04 04:28:31,497 INFO L125 PetriNetUnfolderBase]: For 1344/1376 co-relation queries the response was YES. [2023-08-04 04:28:31,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3141 conditions, 1154 events. 646/1154 cut-off events. For 1344/1376 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5634 event pairs, 264 based on Foata normal form. 24/1056 useless extension candidates. Maximal degree in co-relation 2817. Up to 587 conditions per place. [2023-08-04 04:28:31,504 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 44 selfloop transitions, 5 changer transitions 52/109 dead transitions. [2023-08-04 04:28:31,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 603 flow [2023-08-04 04:28:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 04:28:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 04:28:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 630 transitions. [2023-08-04 04:28:31,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41338582677165353 [2023-08-04 04:28:31,506 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 630 transitions. [2023-08-04 04:28:31,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 630 transitions. [2023-08-04 04:28:31,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:31,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 630 transitions. [2023-08-04 04:28:31,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.5) internal successors, (630), 12 states have internal predecessors, (630), 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 04:28:31,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 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 04:28:31,511 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 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 04:28:31,511 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 292 flow. Second operand 12 states and 630 transitions. [2023-08-04 04:28:31,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 603 flow [2023-08-04 04:28:31,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 577 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-04 04:28:31,547 INFO L231 Difference]: Finished difference. Result has 67 places, 43 transitions, 193 flow [2023-08-04 04:28:31,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=193, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2023-08-04 04:28:31,548 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2023-08-04 04:28:31,548 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 193 flow [2023-08-04 04:28:31,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 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 04:28:31,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:31,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:28:31,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:31,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:31,550 INFO L85 PathProgramCache]: Analyzing trace with hash -784438561, now seen corresponding path program 2 times [2023-08-04 04:28:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456709953] [2023-08-04 04:28:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:28:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456709953] [2023-08-04 04:28:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456709953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:31,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:31,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:28:31,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355184627] [2023-08-04 04:28:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:31,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:28:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:31,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:28:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:28:31,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 127 [2023-08-04 04:28:31,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 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 04:28:31,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:31,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 127 [2023-08-04 04:28:31,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:31,839 INFO L124 PetriNetUnfolderBase]: 125/237 cut-off events. [2023-08-04 04:28:31,839 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-08-04 04:28:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 237 events. 125/237 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 748 event pairs, 17 based on Foata normal form. 24/234 useless extension candidates. Maximal degree in co-relation 592. Up to 44 conditions per place. [2023-08-04 04:28:31,840 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2023-08-04 04:28:31,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 280 flow [2023-08-04 04:28:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 04:28:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 04:28:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 588 transitions. [2023-08-04 04:28:31,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3858267716535433 [2023-08-04 04:28:31,842 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 588 transitions. [2023-08-04 04:28:31,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 588 transitions. [2023-08-04 04:28:31,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:31,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 588 transitions. [2023-08-04 04:28:31,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 49.0) internal successors, (588), 12 states have internal predecessors, (588), 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 04:28:31,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 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 04:28:31,847 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 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 04:28:31,847 INFO L175 Difference]: Start difference. First operand has 67 places, 43 transitions, 193 flow. Second operand 12 states and 588 transitions. [2023-08-04 04:28:31,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 280 flow [2023-08-04 04:28:31,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 250 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-08-04 04:28:31,848 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-04 04:28:31,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-04 04:28:31,849 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-04 04:28:31,849 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-04 04:28:31,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 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 04:28:31,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:28:31,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:28:31,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:28:31,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:28:31,850 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-04 04:28:31,851 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:28:31,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:31,858 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-08-04 04:28:31,859 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:31,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-08-04 04:28:31,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:31,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:31,860 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:31,860 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:31,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:31,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 164 flow [2023-08-04 04:28:31,866 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-08-04 04:28:31,866 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:31,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2023-08-04 04:28:31,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 2420 [2023-08-04 04:28:32,693 INFO L134 LiptonReduction]: Checked pairs total: 7188 [2023-08-04 04:28:32,694 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-04 04:28:32,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:28:32,696 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;@7c0ce504, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:32,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:28:32,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:32,698 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2023-08-04 04:28:32,698 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:32,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:32,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:28:32,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:28:32,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 623836779, now seen corresponding path program 1 times [2023-08-04 04:28:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836405592] [2023-08-04 04:28:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:32,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:32,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836405592] [2023-08-04 04:28:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836405592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:28:32,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895144166] [2023-08-04 04:28:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:32,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:28:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:28:32,737 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 04:28:32,754 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 04:28:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:32,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:28:32,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:28:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:32,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:28:32,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895144166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:32,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:28:32,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:28:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88745127] [2023-08-04 04:28:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:28:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:28:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:28:32,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 127 [2023-08-04 04:28:32,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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 04:28:32,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:32,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 127 [2023-08-04 04:28:32,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:32,975 INFO L124 PetriNetUnfolderBase]: 413/763 cut-off events. [2023-08-04 04:28:32,975 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-04 04:28:32,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 763 events. 413/763 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3982 event pairs, 166 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 576. Up to 476 conditions per place. [2023-08-04 04:28:32,977 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2023-08-04 04:28:32,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 230 flow [2023-08-04 04:28:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:28:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:28:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2023-08-04 04:28:32,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49763779527559054 [2023-08-04 04:28:32,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 316 transitions. [2023-08-04 04:28:32,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 316 transitions. [2023-08-04 04:28:32,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:32,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 316 transitions. [2023-08-04 04:28:32,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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 04:28:32,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 04:28:32,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 04:28:32,981 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 5 states and 316 transitions. [2023-08-04 04:28:32,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 230 flow [2023-08-04 04:28:32,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:28:32,983 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-04 04:28:32,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-04 04:28:32,983 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-04 04:28:32,983 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-04 04:28:32,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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 04:28:32,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:28:32,995 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 04:28:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:28:33,196 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:28:33,196 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:28:33,196 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:28:33,196 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:28:33,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:28:33 BasicIcfg [2023-08-04 04:28:33,202 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:28:33,202 INFO L158 Benchmark]: Toolchain (without parser) took 10009.75ms. Allocated memory was 335.5MB in the beginning and 476.1MB in the end (delta: 140.5MB). Free memory was 281.6MB in the beginning and 260.8MB in the end (delta: 20.8MB). Peak memory consumption was 164.0MB. Max. memory is 16.0GB. [2023-08-04 04:28:33,202 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 285.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:28:33,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.28ms. Allocated memory is still 335.5MB. Free memory was 281.6MB in the beginning and 261.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:28:33,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.84ms. Allocated memory is still 335.5MB. Free memory was 261.7MB in the beginning and 259.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:28:33,203 INFO L158 Benchmark]: Boogie Preprocessor took 32.64ms. Allocated memory is still 335.5MB. Free memory was 259.7MB in the beginning and 258.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:28:33,203 INFO L158 Benchmark]: RCFGBuilder took 453.43ms. Allocated memory was 335.5MB in the beginning and 476.1MB in the end (delta: 140.5MB). Free memory was 258.0MB in the beginning and 438.9MB in the end (delta: -181.0MB). Peak memory consumption was 23.7MB. Max. memory is 16.0GB. [2023-08-04 04:28:33,205 INFO L158 Benchmark]: TraceAbstraction took 9075.82ms. Allocated memory is still 476.1MB. Free memory was 438.9MB in the beginning and 260.8MB in the end (delta: 178.1MB). Peak memory consumption was 178.0MB. Max. memory is 16.0GB. [2023-08-04 04:28:33,207 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 285.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 392.28ms. Allocated memory is still 335.5MB. Free memory was 281.6MB in the beginning and 261.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.84ms. Allocated memory is still 335.5MB. Free memory was 261.7MB in the beginning and 259.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.64ms. Allocated memory is still 335.5MB. Free memory was 259.7MB in the beginning and 258.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 453.43ms. Allocated memory was 335.5MB in the beginning and 476.1MB in the end (delta: 140.5MB). Free memory was 258.0MB in the beginning and 438.9MB in the end (delta: -181.0MB). Peak memory consumption was 23.7MB. Max. memory is 16.0GB. * TraceAbstraction took 9075.82ms. Allocated memory is still 476.1MB. Free memory was 438.9MB in the beginning and 260.8MB in the end (delta: 178.1MB). Peak memory consumption was 178.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 53 PlacesBefore, 11 PlacesAfterwards, 53 TransitionsBefore, 8 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 572 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 572, independent: 572, independent conditional: 0, independent unconditional: 572, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 375, independent: 375, independent conditional: 0, independent unconditional: 375, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 572, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 375, unknown conditional: 0, unknown unconditional: 375] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 53 PlacesBefore, 11 PlacesAfterwards, 53 TransitionsBefore, 8 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 571 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 571, independent: 571, independent conditional: 0, independent unconditional: 571, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 375, independent: 375, independent conditional: 0, independent unconditional: 375, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 571, independent: 196, independent conditional: 0, independent unconditional: 196, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 375, unknown conditional: 0, unknown unconditional: 375] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 76 PlacesBefore, 39 PlacesAfterwards, 76 TransitionsBefore, 36 TransitionsAfterwards, 2420 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 51 TotalNumberOfCompositions, 8108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2735, independent: 2467, independent conditional: 0, independent unconditional: 2467, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1134, independent: 1107, independent conditional: 0, independent unconditional: 1107, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2735, independent: 1360, independent conditional: 0, independent unconditional: 1360, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 1134, unknown conditional: 0, unknown unconditional: 1134] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 109, Positive conditional cache size: 0, Positive unconditional cache size: 109, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 76 PlacesBefore, 39 PlacesAfterwards, 76 TransitionsBefore, 36 TransitionsAfterwards, 2420 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 51 TotalNumberOfCompositions, 7188 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3261, independent: 3041, independent conditional: 0, independent unconditional: 3041, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1220, independent: 1190, independent conditional: 0, independent unconditional: 1190, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3261, independent: 1851, independent conditional: 0, independent unconditional: 1851, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 1220, unknown conditional: 0, unknown unconditional: 1220] , Statistics on independence cache: Total cache size (in pairs): 163, Positive cache size: 140, Positive conditional cache size: 0, Positive unconditional cache size: 140, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 728]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 13 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 93 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 478 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 411 mSDsluCounter, 150 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 829 IncrementalHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 38 mSDtfsCounter, 829 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=292occurred in iteration=3, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 72 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 93 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:28:33,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...