/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 02:32:31,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 02:32:31,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 02:32:31,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 02:32:31,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 02:32:31,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 02:32:31,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 02:32:31,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 02:32:31,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 02:32:31,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 02:32:31,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 02:32:31,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 02:32:31,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 02:32:31,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 02:32:31,578 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 02:32:31,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 02:32:31,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 02:32:31,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 02:32:31,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 02:32:31,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 02:32:31,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 02:32:31,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 02:32:31,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 02:32:31,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 02:32:31,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 02:32:31,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 02:32:31,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 02:32:31,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 02:32:31,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 02:32:31,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 02:32:31,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:32:31,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 02:32:31,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 02:32:31,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 02:32:31,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 02:32:31,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 02:32:31,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 02:32:31,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 02:32:31,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 02:32:31,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 02:32:31,591 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 02:32:31,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 02:32:31,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 02:32:31,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 02:32:31,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 02:32:31,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 02:32:31,853 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 02:32:31,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c [2023-08-04 02:32:33,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 02:32:33,216 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 02:32:33,217 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c [2023-08-04 02:32:33,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca421d85/9a35beae92ae46f7b53a174b53dca892/FLAG414ce196d [2023-08-04 02:32:33,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fca421d85/9a35beae92ae46f7b53a174b53dca892 [2023-08-04 02:32:33,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 02:32:33,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 02:32:33,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 02:32:33,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 02:32:33,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 02:32:33,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a319b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33, skipping insertion in model container [2023-08-04 02:32:33,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,265 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 02:32:33,404 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c[3193,3206] [2023-08-04 02:32:33,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:32:33,413 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 02:32:33,435 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c[3193,3206] [2023-08-04 02:32:33,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:32:33,443 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:32:33,443 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:32:33,448 INFO L206 MainTranslator]: Completed translation [2023-08-04 02:32:33,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33 WrapperNode [2023-08-04 02:32:33,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 02:32:33,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 02:32:33,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 02:32:33,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 02:32:33,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,483 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2023-08-04 02:32:33,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 02:32:33,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 02:32:33,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 02:32:33,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 02:32:33,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 02:32:33,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 02:32:33,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 02:32:33,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 02:32:33,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (1/1) ... [2023-08-04 02:32:33,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:32:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:32:33,549 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 02:32:33,560 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 02:32:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 02:32:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 02:32:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 02:32:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 02:32:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 02:32:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 02:32:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 02:32:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 02:32:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 02:32:33,584 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 02:32:33,682 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 02:32:33,684 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 02:32:33,914 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 02:32:33,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 02:32:33,936 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-04 02:32:33,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:32:33 BoogieIcfgContainer [2023-08-04 02:32:33,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 02:32:33,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 02:32:33,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 02:32:33,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 02:32:33,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 02:32:33" (1/3) ... [2023-08-04 02:32:33,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1817b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:32:33, skipping insertion in model container [2023-08-04 02:32:33,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:32:33" (2/3) ... [2023-08-04 02:32:33,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1817b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:32:33, skipping insertion in model container [2023-08-04 02:32:33,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:32:33" (3/3) ... [2023-08-04 02:32:33,945 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-misc-4.wvr_bound2.c [2023-08-04 02:32:33,953 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 02:32:33,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 02:32:33,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 02:32:33,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 02:32:34,057 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 02:32:34,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 151 transitions, 344 flow [2023-08-04 02:32:34,246 INFO L124 PetriNetUnfolderBase]: 84/551 cut-off events. [2023-08-04 02:32:34,247 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:32:34,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 551 events. 84/551 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2658 event pairs, 0 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-04 02:32:34,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 151 transitions, 344 flow [2023-08-04 02:32:34,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 151 transitions, 344 flow [2023-08-04 02:32:34,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:32:34,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 151 transitions, 344 flow [2023-08-04 02:32:34,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 151 transitions, 344 flow [2023-08-04 02:32:34,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 151 transitions, 344 flow [2023-08-04 02:32:34,339 INFO L124 PetriNetUnfolderBase]: 84/551 cut-off events. [2023-08-04 02:32:34,340 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:32:34,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 551 events. 84/551 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2658 event pairs, 0 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-04 02:32:34,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 4464 [2023-08-04 02:32:37,208 INFO L134 LiptonReduction]: Checked pairs total: 8443 [2023-08-04 02:32:37,208 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 02:32:37,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:32:37,236 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;@364dcbfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:32:37,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:32:37,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:32:37,245 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2023-08-04 02:32:37,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 02:32:37,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:32:37,245 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 02:32:37,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:32:37,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:32:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -442165224, now seen corresponding path program 1 times [2023-08-04 02:32:37,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:32:37,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83864315] [2023-08-04 02:32:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:32:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:32:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:32:37,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 02:32:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:32:37,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 02:32:37,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 02:32:37,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:32:37,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:32:37,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:32:37,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 02:32:37,464 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 02:32:37,466 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 02:32:37,467 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 02:32:37,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 02:32:37,496 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 02:32:37,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 190 transitions, 470 flow [2023-08-04 02:32:37,922 INFO L124 PetriNetUnfolderBase]: 795/3560 cut-off events. [2023-08-04 02:32:37,923 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:32:37,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 3560 events. 795/3560 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27650 event pairs, 19 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 2137. Up to 192 conditions per place. [2023-08-04 02:32:37,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 190 transitions, 470 flow [2023-08-04 02:32:37,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 190 transitions, 470 flow [2023-08-04 02:32:37,980 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:32:37,980 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 190 transitions, 470 flow [2023-08-04 02:32:37,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 190 transitions, 470 flow [2023-08-04 02:32:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 190 transitions, 470 flow [2023-08-04 02:32:38,361 INFO L124 PetriNetUnfolderBase]: 795/3560 cut-off events. [2023-08-04 02:32:38,362 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:32:38,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 3560 events. 795/3560 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27650 event pairs, 19 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 2137. Up to 192 conditions per place. [2023-08-04 02:32:38,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 11556 [2023-08-04 02:32:40,893 INFO L134 LiptonReduction]: Checked pairs total: 48995 [2023-08-04 02:32:40,893 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-04 02:32:40,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:32:40,897 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;@364dcbfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:32:40,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:32:40,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:32:40,907 INFO L124 PetriNetUnfolderBase]: 14/129 cut-off events. [2023-08-04 02:32:40,907 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 02:32:40,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:32:40,908 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 02:32:40,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:32:40,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:32:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1214839391, now seen corresponding path program 1 times [2023-08-04 02:32:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:32:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353615572] [2023-08-04 02:32:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:32:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:32:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:32:41,051 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 02:32:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:32:41,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353615572] [2023-08-04 02:32:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353615572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:32:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123916081] [2023-08-04 02:32:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:32:41,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:32:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:32:41,059 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 02:32:41,079 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 02:32:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:32:41,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:32:41,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:32:41,205 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 02:32:41,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:32:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123916081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:32:41,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:32:41,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 02:32:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073456915] [2023-08-04 02:32:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:32:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:32:41,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:32:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:32:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:32:41,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:32:41,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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 02:32:41,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:32:41,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:32:41,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:33:18,189 INFO L124 PetriNetUnfolderBase]: 466957/608467 cut-off events. [2023-08-04 02:33:18,189 INFO L125 PetriNetUnfolderBase]: For 64388/64388 co-relation queries the response was YES. [2023-08-04 02:33:20,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197789 conditions, 608467 events. 466957/608467 cut-off events. For 64388/64388 co-relation queries the response was YES. Maximal size of possible extension queue 16141. Compared 4261730 event pairs, 166476 based on Foata normal form. 0/368560 useless extension candidates. Maximal degree in co-relation 373743. Up to 548188 conditions per place. [2023-08-04 02:33:23,111 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 75 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2023-08-04 02:33:23,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 454 flow [2023-08-04 02:33:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:33:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:33:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2023-08-04 02:33:23,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223300970873787 [2023-08-04 02:33:23,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2023-08-04 02:33:23,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2023-08-04 02:33:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:33:23,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2023-08-04 02:33:23,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 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 02:33:23,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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 02:33:23,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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 02:33:23,146 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 264 flow. Second operand 5 states and 807 transitions. [2023-08-04 02:33:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 454 flow [2023-08-04 02:33:23,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:33:23,197 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 271 flow [2023-08-04 02:33:23,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-08-04 02:33:23,201 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-04 02:33:23,201 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 271 flow [2023-08-04 02:33:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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 02:33:23,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:33:23,202 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 02:33:23,211 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 02:33:23,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:33:23,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:33:23,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:33:23,408 INFO L85 PathProgramCache]: Analyzing trace with hash 575903206, now seen corresponding path program 1 times [2023-08-04 02:33:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:33:23,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546610480] [2023-08-04 02:33:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:33:23,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:33:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:33:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:33:23,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:33:23,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546610480] [2023-08-04 02:33:23,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546610480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:33:23,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:33:23,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 02:33:23,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382525553] [2023-08-04 02:33:23,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:33:23,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:33:23,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:33:23,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:33:23,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:33:23,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:33:23,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 02:33:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:33:23,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:33:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:33:58,350 INFO L124 PetriNetUnfolderBase]: 511437/655571 cut-off events. [2023-08-04 02:33:58,350 INFO L125 PetriNetUnfolderBase]: For 61863/61863 co-relation queries the response was YES. [2023-08-04 02:34:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283452 conditions, 655571 events. 511437/655571 cut-off events. For 61863/61863 co-relation queries the response was YES. Maximal size of possible extension queue 15409. Compared 4323112 event pairs, 225516 based on Foata normal form. 1/386200 useless extension candidates. Maximal degree in co-relation 404251. Up to 591036 conditions per place. [2023-08-04 02:34:03,353 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 67 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-04 02:34:03,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 418 flow [2023-08-04 02:34:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:34:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:34:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-04 02:34:03,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469255663430421 [2023-08-04 02:34:03,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-04 02:34:03,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-04 02:34:03,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:34:03,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-04 02:34:03,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 02:34:03,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:34:03,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:34:03,374 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 271 flow. Second operand 3 states and 507 transitions. [2023-08-04 02:34:03,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 418 flow [2023-08-04 02:34:03,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:34:03,413 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 269 flow [2023-08-04 02:34:03,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2023-08-04 02:34:03,414 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-04 02:34:03,414 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 269 flow [2023-08-04 02:34:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 02:34:03,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:34:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:34:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 02:34:03,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:34:03,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:34:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 632137411, now seen corresponding path program 1 times [2023-08-04 02:34:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:34:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540699567] [2023-08-04 02:34:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:34:03,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:34:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:34:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:34:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:34:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540699567] [2023-08-04 02:34:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540699567] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:34:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097253128] [2023-08-04 02:34:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:34:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:34:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:34:03,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:34:03,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 02:34:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:34:03,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 02:34:03,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:34:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:34:03,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:34:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:34:03,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097253128] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:34:03,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:34:03,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 02:34:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694907569] [2023-08-04 02:34:03,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:34:03,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:34:03,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:34:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:34:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:34:03,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:34:03,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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 02:34:03,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:34:03,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:34:03,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:34:40,853 INFO L124 PetriNetUnfolderBase]: 456047/594581 cut-off events. [2023-08-04 02:34:40,853 INFO L125 PetriNetUnfolderBase]: For 60747/60747 co-relation queries the response was YES. [2023-08-04 02:34:43,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163593 conditions, 594581 events. 456047/594581 cut-off events. For 60747/60747 co-relation queries the response was YES. Maximal size of possible extension queue 15176. Compared 4105538 event pairs, 162021 based on Foata normal form. 5/361867 useless extension candidates. Maximal degree in co-relation 367432. Up to 533221 conditions per place. [2023-08-04 02:34:45,976 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 75 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-04 02:34:45,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 454 flow [2023-08-04 02:34:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 02:34:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 02:34:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 659 transitions. [2023-08-04 02:34:45,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331715210355987 [2023-08-04 02:34:45,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 659 transitions. [2023-08-04 02:34:45,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 659 transitions. [2023-08-04 02:34:45,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:34:45,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 659 transitions. [2023-08-04 02:34:46,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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 02:34:46,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 02:34:46,004 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 02:34:46,004 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 269 flow. Second operand 4 states and 659 transitions. [2023-08-04 02:34:46,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 454 flow [2023-08-04 02:34:46,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:34:46,037 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 266 flow [2023-08-04 02:34:46,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-08-04 02:34:46,041 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-04 02:34:46,044 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 266 flow [2023-08-04 02:34:46,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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 02:34:46,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:34:46,046 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:34:46,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 02:34:46,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 02:34:46,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:34:46,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:34:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1148728641, now seen corresponding path program 1 times [2023-08-04 02:34:46,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:34:46,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675459221] [2023-08-04 02:34:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:34:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:34:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:34:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 02:34:46,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:34:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675459221] [2023-08-04 02:34:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675459221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:34:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110726569] [2023-08-04 02:34:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:34:46,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:34:46,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:34:46,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:34:46,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 02:34:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:34:46,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:34:46,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:34:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 02:34:46,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:34:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110726569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:34:46,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:34:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 02:34:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401333856] [2023-08-04 02:34:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:34:46,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:34:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:34:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:34:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:34:46,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:34:46,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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 02:34:46,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:34:46,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:34:46,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:35:19,180 INFO L124 PetriNetUnfolderBase]: 427963/537151 cut-off events. [2023-08-04 02:35:19,181 INFO L125 PetriNetUnfolderBase]: For 45629/45629 co-relation queries the response was YES. [2023-08-04 02:35:21,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089509 conditions, 537151 events. 427963/537151 cut-off events. For 45629/45629 co-relation queries the response was YES. Maximal size of possible extension queue 12900. Compared 3406606 event pairs, 56939 based on Foata normal form. 0/319068 useless extension candidates. Maximal degree in co-relation 333536. Up to 511815 conditions per place. [2023-08-04 02:35:23,403 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 100 selfloop transitions, 5 changer transitions 0/128 dead transitions. [2023-08-04 02:35:23,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 128 transitions, 556 flow [2023-08-04 02:35:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:35:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:35:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2023-08-04 02:35:23,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372168284789643 [2023-08-04 02:35:23,405 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2023-08-04 02:35:23,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2023-08-04 02:35:23,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:35:23,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2023-08-04 02:35:23,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 02:35:23,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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 02:35:23,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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 02:35:23,411 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 266 flow. Second operand 5 states and 830 transitions. [2023-08-04 02:35:23,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 128 transitions, 556 flow [2023-08-04 02:35:23,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 542 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 02:35:23,441 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 269 flow [2023-08-04 02:35:23,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-08-04 02:35:23,442 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-04 02:35:23,442 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 269 flow [2023-08-04 02:35:23,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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 02:35:23,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:35:23,443 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:35:23,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 02:35:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:35:23,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:35:23,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:35:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash 651144075, now seen corresponding path program 1 times [2023-08-04 02:35:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:35:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662534002] [2023-08-04 02:35:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:35:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:35:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:35:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:35:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:35:23,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662534002] [2023-08-04 02:35:23,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662534002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:35:23,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:35:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:35:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419084842] [2023-08-04 02:35:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:35:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:35:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:35:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:35:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:35:23,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:35:23,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 02:35:23,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:35:23,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:35:23,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:35:56,214 INFO L124 PetriNetUnfolderBase]: 477288/585177 cut-off events. [2023-08-04 02:35:56,214 INFO L125 PetriNetUnfolderBase]: For 42572/42572 co-relation queries the response was YES. [2023-08-04 02:35:58,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182119 conditions, 585177 events. 477288/585177 cut-off events. For 42572/42572 co-relation queries the response was YES. Maximal size of possible extension queue 13233. Compared 3458981 event pairs, 226008 based on Foata normal form. 25/333066 useless extension candidates. Maximal degree in co-relation 367130. Up to 563720 conditions per place. [2023-08-04 02:36:00,320 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 76 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-04 02:36:00,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 450 flow [2023-08-04 02:36:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:36:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:36:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-04 02:36:00,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-04 02:36:00,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-04 02:36:00,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-04 02:36:00,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:36:00,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-04 02:36:00,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 02:36:00,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:36:00,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:36:00,326 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 269 flow. Second operand 3 states and 515 transitions. [2023-08-04 02:36:00,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 450 flow [2023-08-04 02:36:00,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:36:00,335 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 267 flow [2023-08-04 02:36:00,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2023-08-04 02:36:00,336 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-04 02:36:00,336 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 267 flow [2023-08-04 02:36:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 02:36:00,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:36:00,336 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:36:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 02:36:00,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:36:00,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:36:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -93675346, now seen corresponding path program 1 times [2023-08-04 02:36:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:36:00,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078575887] [2023-08-04 02:36:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:36:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:36:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:36:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:36:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:36:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078575887] [2023-08-04 02:36:00,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078575887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:36:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064207157] [2023-08-04 02:36:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:36:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:36:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:36:00,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:36:00,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 02:36:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:36:00,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 02:36:00,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:36:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:36:00,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:36:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:36:00,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064207157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:36:00,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:36:00,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 02:36:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748715765] [2023-08-04 02:36:00,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:36:00,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:36:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:36:00,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:36:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:36:00,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:36:00,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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 02:36:00,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:36:00,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:36:00,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:36:29,685 INFO L124 PetriNetUnfolderBase]: 416088/520697 cut-off events. [2023-08-04 02:36:29,685 INFO L125 PetriNetUnfolderBase]: For 41652/41652 co-relation queries the response was YES. [2023-08-04 02:36:31,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053364 conditions, 520697 events. 416088/520697 cut-off events. For 41652/41652 co-relation queries the response was YES. Maximal size of possible extension queue 13252. Compared 3377656 event pairs, 170268 based on Foata normal form. 100/308221 useless extension candidates. Maximal degree in co-relation 330595. Up to 497650 conditions per place. [2023-08-04 02:36:33,481 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 90 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-04 02:36:33,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 510 flow [2023-08-04 02:36:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 02:36:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 02:36:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 673 transitions. [2023-08-04 02:36:33,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444983818770227 [2023-08-04 02:36:33,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 673 transitions. [2023-08-04 02:36:33,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 673 transitions. [2023-08-04 02:36:33,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:36:33,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 673 transitions. [2023-08-04 02:36:33,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 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 02:36:33,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 02:36:33,488 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 02:36:33,488 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 267 flow. Second operand 4 states and 673 transitions. [2023-08-04 02:36:33,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 116 transitions, 510 flow [2023-08-04 02:36:33,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:36:33,502 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 264 flow [2023-08-04 02:36:33,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2023-08-04 02:36:33,503 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-04 02:36:33,503 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 264 flow [2023-08-04 02:36:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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 02:36:33,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:36:33,504 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:36:33,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 02:36:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:36:33,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:36:33,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:36:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash -783411728, now seen corresponding path program 1 times [2023-08-04 02:36:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:36:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96715560] [2023-08-04 02:36:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:36:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:36:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:36:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 02:36:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:36:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96715560] [2023-08-04 02:36:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96715560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:36:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411998212] [2023-08-04 02:36:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:36:33,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:36:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:36:33,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:36:33,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 02:36:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:36:33,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:36:33,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:36:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 02:36:33,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:36:33,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411998212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:36:33,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:36:33,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 02:36:33,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206122652] [2023-08-04 02:36:33,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:36:33,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:36:33,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:36:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:36:33,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:36:33,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:36:33,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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 02:36:33,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:36:33,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:36:33,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:37:05,860 INFO L124 PetriNetUnfolderBase]: 507768/613277 cut-off events. [2023-08-04 02:37:05,860 INFO L125 PetriNetUnfolderBase]: For 29207/29207 co-relation queries the response was YES. [2023-08-04 02:37:07,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234674 conditions, 613277 events. 507768/613277 cut-off events. For 29207/29207 co-relation queries the response was YES. Maximal size of possible extension queue 13404. Compared 3400426 event pairs, 5398 based on Foata normal form. 0/339986 useless extension candidates. Maximal degree in co-relation 400745. Up to 547880 conditions per place. [2023-08-04 02:37:08,242 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2023-08-04 02:37:08,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 140 transitions, 604 flow [2023-08-04 02:37:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:37:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:37:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2023-08-04 02:37:08,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449838187702265 [2023-08-04 02:37:08,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2023-08-04 02:37:08,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2023-08-04 02:37:08,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:37:08,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2023-08-04 02:37:08,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 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 02:37:08,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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 02:37:08,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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 02:37:08,249 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 264 flow. Second operand 5 states and 842 transitions. [2023-08-04 02:37:08,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 140 transitions, 604 flow [2023-08-04 02:37:08,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 590 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 02:37:08,446 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-04 02:37:08,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-04 02:37:08,447 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-04 02:37:08,447 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-04 02:37:08,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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 02:37:08,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:37:08,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:37:08,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:37:08,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 02:37:08,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:37:08,652 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:37:08,653 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 02:37:08,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 190 transitions, 470 flow [2023-08-04 02:37:08,877 INFO L124 PetriNetUnfolderBase]: 795/3560 cut-off events. [2023-08-04 02:37:08,877 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:37:08,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 3560 events. 795/3560 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27650 event pairs, 19 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 2137. Up to 192 conditions per place. [2023-08-04 02:37:08,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 190 transitions, 470 flow [2023-08-04 02:37:09,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 190 transitions, 470 flow [2023-08-04 02:37:09,155 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:37:09,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 190 transitions, 470 flow [2023-08-04 02:37:09,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 190 transitions, 470 flow [2023-08-04 02:37:09,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 190 transitions, 470 flow [2023-08-04 02:37:09,428 INFO L124 PetriNetUnfolderBase]: 795/3560 cut-off events. [2023-08-04 02:37:09,428 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:37:09,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 3560 events. 795/3560 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27650 event pairs, 19 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 2137. Up to 192 conditions per place. [2023-08-04 02:37:09,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 11556 [2023-08-04 02:37:11,857 INFO L134 LiptonReduction]: Checked pairs total: 49015 [2023-08-04 02:37:11,857 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-04 02:37:11,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 02:37:11,858 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;@364dcbfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:37:11,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 02:37:11,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:37:11,861 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2023-08-04 02:37:11,861 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 02:37:11,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:37:11,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:37:11,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:37:11,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:37:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 685943769, now seen corresponding path program 1 times [2023-08-04 02:37:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:37:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289445566] [2023-08-04 02:37:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:37:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:37:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:37:11,883 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 02:37:11,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:37:11,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289445566] [2023-08-04 02:37:11,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289445566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:37:11,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:37:11,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 02:37:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927449300] [2023-08-04 02:37:11,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:37:11,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:37:11,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:37:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:37:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:37:11,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:37:11,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 02:37:11,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:37:11,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:37:11,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:37:43,865 INFO L124 PetriNetUnfolderBase]: 455587/597871 cut-off events. [2023-08-04 02:37:43,865 INFO L125 PetriNetUnfolderBase]: For 67153/67153 co-relation queries the response was YES. [2023-08-04 02:37:45,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174579 conditions, 597871 events. 455587/597871 cut-off events. For 67153/67153 co-relation queries the response was YES. Maximal size of possible extension queue 15454. Compared 4247150 event pairs, 225536 based on Foata normal form. 0/365908 useless extension candidates. Maximal degree in co-relation 366479. Up to 535866 conditions per place. [2023-08-04 02:37:48,265 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 66 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-04 02:37:48,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 412 flow [2023-08-04 02:37:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:37:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:37:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-04 02:37:48,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480043149946062 [2023-08-04 02:37:48,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-04 02:37:48,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-04 02:37:48,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:37:48,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-04 02:37:48,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 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 02:37:48,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:37:48,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:37:48,270 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 264 flow. Second operand 3 states and 508 transitions. [2023-08-04 02:37:48,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 412 flow [2023-08-04 02:37:48,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 02:37:48,307 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 274 flow [2023-08-04 02:37:48,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2023-08-04 02:37:48,308 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-04 02:37:48,308 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 274 flow [2023-08-04 02:37:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 02:37:48,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:37:48,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:37:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 02:37:48,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:37:48,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:37:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -60933090, now seen corresponding path program 1 times [2023-08-04 02:37:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:37:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443156355] [2023-08-04 02:37:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:37:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:37:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:37:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 02:37:48,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:37:48,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443156355] [2023-08-04 02:37:48,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443156355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:37:48,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283907909] [2023-08-04 02:37:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:37:48,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:37:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:37:48,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:37:48,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 02:37:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:37:48,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 02:37:48,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:37:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 02:37:48,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:37:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283907909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:37:48,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:37:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 02:37:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780271684] [2023-08-04 02:37:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:37:48,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:37:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:37:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:37:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:37:48,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:37:48,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 02:37:48,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:37:48,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:37:48,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:38:22,955 INFO L124 PetriNetUnfolderBase]: 492444/612743 cut-off events. [2023-08-04 02:38:22,956 INFO L125 PetriNetUnfolderBase]: For 57019/57019 co-relation queries the response was YES. [2023-08-04 02:38:25,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234016 conditions, 612743 events. 492444/612743 cut-off events. For 57019/57019 co-relation queries the response was YES. Maximal size of possible extension queue 13654. Compared 3774332 event pairs, 230682 based on Foata normal form. 0/352002 useless extension candidates. Maximal degree in co-relation 455240. Up to 578583 conditions per place. [2023-08-04 02:38:27,700 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 75 selfloop transitions, 2 changer transitions 1/102 dead transitions. [2023-08-04 02:38:27,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 458 flow [2023-08-04 02:38:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:38:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:38:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-04 02:38:27,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-04 02:38:27,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-04 02:38:27,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-04 02:38:27,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:38:27,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-04 02:38:27,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 02:38:27,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:38:27,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:38:27,705 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 274 flow. Second operand 3 states and 515 transitions. [2023-08-04 02:38:27,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 458 flow [2023-08-04 02:38:27,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:38:27,718 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 278 flow [2023-08-04 02:38:27,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2023-08-04 02:38:27,719 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-04 02:38:27,719 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 278 flow [2023-08-04 02:38:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 02:38:27,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:38:27,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:38:27,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 02:38:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:38:27,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:38:27,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:38:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1486860026, now seen corresponding path program 1 times [2023-08-04 02:38:27,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:38:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452365084] [2023-08-04 02:38:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:38:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:38:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:38:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 02:38:27,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:38:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452365084] [2023-08-04 02:38:27,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452365084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:38:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009752105] [2023-08-04 02:38:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:38:27,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:38:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:38:27,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:38:27,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 02:38:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:38:28,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 02:38:28,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:38:28,062 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 02:38:28,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:38:28,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009752105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:38:28,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:38:28,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 02:38:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828681987] [2023-08-04 02:38:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:38:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:38:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:38:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:38:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:38:28,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:38:28,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 02:38:28,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:38:28,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:38:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:39:03,858 INFO L124 PetriNetUnfolderBase]: 489284/604138 cut-off events. [2023-08-04 02:39:03,858 INFO L125 PetriNetUnfolderBase]: For 44192/44192 co-relation queries the response was YES. [2023-08-04 02:39:07,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226147 conditions, 604138 events. 489284/604138 cut-off events. For 44192/44192 co-relation queries the response was YES. Maximal size of possible extension queue 14765. Compared 3641578 event pairs, 250346 based on Foata normal form. 0/345707 useless extension candidates. Maximal degree in co-relation 381036. Up to 564571 conditions per place. [2023-08-04 02:39:10,639 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 80 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-04 02:39:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 480 flow [2023-08-04 02:39:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:39:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:39:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-04 02:39:10,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598705501618123 [2023-08-04 02:39:10,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-04 02:39:10,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-04 02:39:10,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:39:10,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-04 02:39:10,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 02:39:10,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:39:10,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:39:10,644 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 278 flow. Second operand 3 states and 519 transitions. [2023-08-04 02:39:10,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 480 flow [2023-08-04 02:39:10,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 106 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:39:10,687 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 284 flow [2023-08-04 02:39:10,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2023-08-04 02:39:10,688 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-04 02:39:10,688 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 284 flow [2023-08-04 02:39:10,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 02:39:10,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:39:10,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:39:10,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 02:39:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:39:10,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:39:10,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:39:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1223529648, now seen corresponding path program 1 times [2023-08-04 02:39:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:39:10,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530211426] [2023-08-04 02:39:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:39:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:39:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:39:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 02:39:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:39:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530211426] [2023-08-04 02:39:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530211426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:39:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736910370] [2023-08-04 02:39:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:39:10,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:39:10,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:39:10,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:39:10,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 02:39:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:39:11,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 02:39:11,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:39:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 02:39:11,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:39:11,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736910370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:39:11,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:39:11,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 02:39:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413690479] [2023-08-04 02:39:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:39:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:39:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:39:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:39:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:39:11,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:39:11,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 02:39:11,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:39:11,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:39:11,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:39:42,621 INFO L124 PetriNetUnfolderBase]: 429816/533990 cut-off events. [2023-08-04 02:39:42,622 INFO L125 PetriNetUnfolderBase]: For 41090/41090 co-relation queries the response was YES. [2023-08-04 02:39:45,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094167 conditions, 533990 events. 429816/533990 cut-off events. For 41090/41090 co-relation queries the response was YES. Maximal size of possible extension queue 12724. Compared 3236885 event pairs, 207850 based on Foata normal form. 0/310734 useless extension candidates. Maximal degree in co-relation 272359. Up to 429779 conditions per place. [2023-08-04 02:39:48,375 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 88 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-04 02:39:48,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 114 transitions, 533 flow [2023-08-04 02:39:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:39:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:39:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-04 02:39:48,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674217907227616 [2023-08-04 02:39:48,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-04 02:39:48,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-04 02:39:48,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:39:48,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-04 02:39:48,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 02:39:48,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:39:48,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:39:48,404 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 284 flow. Second operand 3 states and 526 transitions. [2023-08-04 02:39:48,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 114 transitions, 533 flow [2023-08-04 02:39:48,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:39:48,483 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 294 flow [2023-08-04 02:39:48,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2023-08-04 02:39:48,498 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-04 02:39:48,498 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 294 flow [2023-08-04 02:39:48,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 02:39:48,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:39:48,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:39:48,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 02:39:48,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 02:39:48,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:39:48,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:39:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash 925640583, now seen corresponding path program 1 times [2023-08-04 02:39:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:39:48,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616661770] [2023-08-04 02:39:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:39:48,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:39:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:39:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 02:39:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:39:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616661770] [2023-08-04 02:39:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616661770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:39:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33751384] [2023-08-04 02:39:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:39:48,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:39:48,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:39:48,800 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:39:48,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 02:39:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:39:48,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 02:39:48,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:39:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 02:39:48,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:39:48,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33751384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:39:48,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:39:48,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 02:39:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548624857] [2023-08-04 02:39:48,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:39:48,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:39:48,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:39:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:39:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:39:48,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:39:48,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 02:39:48,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:39:48,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:39:48,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:40:18,986 INFO L124 PetriNetUnfolderBase]: 396548/496146 cut-off events. [2023-08-04 02:40:18,986 INFO L125 PetriNetUnfolderBase]: For 62872/62872 co-relation queries the response was YES. [2023-08-04 02:40:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041872 conditions, 496146 events. 396548/496146 cut-off events. For 62872/62872 co-relation queries the response was YES. Maximal size of possible extension queue 10211. Compared 3019538 event pairs, 188646 based on Foata normal form. 0/299230 useless extension candidates. Maximal degree in co-relation 264335. Up to 376311 conditions per place. [2023-08-04 02:40:23,097 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 89 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-04 02:40:23,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 115 transitions, 545 flow [2023-08-04 02:40:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:40:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:40:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-04 02:40:23,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674217907227616 [2023-08-04 02:40:23,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-04 02:40:23,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-04 02:40:23,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:40:23,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-04 02:40:23,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 02:40:23,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:40:23,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:40:23,101 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 294 flow. Second operand 3 states and 526 transitions. [2023-08-04 02:40:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 115 transitions, 545 flow [2023-08-04 02:40:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 115 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:40:24,456 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 304 flow [2023-08-04 02:40:24,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-08-04 02:40:24,457 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-08-04 02:40:24,457 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 304 flow [2023-08-04 02:40:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 02:40:24,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:40:24,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:40:24,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 02:40:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 02:40:24,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:40:24,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:40:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash 7113463, now seen corresponding path program 1 times [2023-08-04 02:40:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:40:24,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374148139] [2023-08-04 02:40:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:40:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:40:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:40:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 02:40:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:40:24,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374148139] [2023-08-04 02:40:24,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374148139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:40:24,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633424633] [2023-08-04 02:40:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:40:24,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:40:24,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:40:24,716 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:40:24,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 02:40:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:40:24,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 02:40:24,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:40:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 02:40:24,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:40:24,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633424633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:40:24,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:40:24,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 02:40:24,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187629521] [2023-08-04 02:40:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:40:24,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:40:24,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:40:24,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:40:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:40:24,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-04 02:40:24,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 02:40:24,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:40:24,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-04 02:40:24,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:40:54,481 INFO L124 PetriNetUnfolderBase]: 393637/493623 cut-off events. [2023-08-04 02:40:54,482 INFO L125 PetriNetUnfolderBase]: For 66822/66822 co-relation queries the response was YES. [2023-08-04 02:40:56,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050107 conditions, 493623 events. 393637/493623 cut-off events. For 66822/66822 co-relation queries the response was YES. Maximal size of possible extension queue 9952. Compared 3009748 event pairs, 215706 based on Foata normal form. 0/303769 useless extension candidates. Maximal degree in co-relation 599771. Up to 428708 conditions per place. [2023-08-04 02:40:58,419 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 90 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-08-04 02:40:58,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 557 flow [2023-08-04 02:40:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:40:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:40:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-04 02:40:58,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674217907227616 [2023-08-04 02:40:58,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-04 02:40:58,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-04 02:40:58,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:40:58,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-04 02:40:58,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 02:40:58,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:40:58,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 02:40:58,424 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 304 flow. Second operand 3 states and 526 transitions. [2023-08-04 02:40:58,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 557 flow [2023-08-04 02:41:30,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:41:30,363 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 314 flow [2023-08-04 02:41:30,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2023-08-04 02:41:30,364 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2023-08-04 02:41:30,364 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 314 flow [2023-08-04 02:41:30,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 02:41:30,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:41:30,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:41:30,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 02:41:30,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 02:41:30,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:41:30,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:41:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1188776537, now seen corresponding path program 1 times [2023-08-04 02:41:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:41:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815280873] [2023-08-04 02:41:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:41:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:41:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:41:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 02:41:30,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:41:30,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815280873] [2023-08-04 02:41:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815280873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:41:30,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062756786] [2023-08-04 02:41:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:41:30,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:41:30,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:41:30,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:41:30,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 02:41:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:41:30,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 02:41:30,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:41:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 02:41:30,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:41:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 02:41:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062756786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:41:30,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:41:30,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 02:41:30,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295658083] [2023-08-04 02:41:30,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:41:30,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:41:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:41:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:41:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:41:30,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:41:30,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 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 02:41:30,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:41:30,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:41:30,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:41:54,818 INFO L124 PetriNetUnfolderBase]: 303597/397939 cut-off events. [2023-08-04 02:41:54,818 INFO L125 PetriNetUnfolderBase]: For 60253/60253 co-relation queries the response was YES. [2023-08-04 02:41:57,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859202 conditions, 397939 events. 303597/397939 cut-off events. For 60253/60253 co-relation queries the response was YES. Maximal size of possible extension queue 10124. Compared 2751500 event pairs, 128382 based on Foata normal form. 5/266178 useless extension candidates. Maximal degree in co-relation 742277. Up to 377621 conditions per place. [2023-08-04 02:41:58,491 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 80 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-08-04 02:41:58,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 108 transitions, 516 flow [2023-08-04 02:41:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 02:41:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 02:41:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 660 transitions. [2023-08-04 02:41:58,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339805825242718 [2023-08-04 02:41:58,493 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 660 transitions. [2023-08-04 02:41:58,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 660 transitions. [2023-08-04 02:41:58,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:41:58,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 660 transitions. [2023-08-04 02:41:58,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 02:41:58,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 02:41:58,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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 02:41:58,496 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 314 flow. Second operand 4 states and 660 transitions. [2023-08-04 02:41:58,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 108 transitions, 516 flow [2023-08-04 02:42:22,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 108 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:42:22,416 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 332 flow [2023-08-04 02:42:22,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2023-08-04 02:42:22,417 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-08-04 02:42:22,417 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 332 flow [2023-08-04 02:42:22,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 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 02:42:22,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:42:22,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:42:22,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 02:42:22,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 02:42:22,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:42:22,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:42:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1404483015, now seen corresponding path program 1 times [2023-08-04 02:42:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:42:22,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411791512] [2023-08-04 02:42:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:42:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:42:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:42:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:42:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:42:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411791512] [2023-08-04 02:42:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411791512] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:42:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298375050] [2023-08-04 02:42:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:42:22,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:42:22,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:42:22,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:42:22,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 02:42:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:42:22,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 02:42:22,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:42:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:42:22,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:42:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:42:22,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298375050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:42:22,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:42:22,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 02:42:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326897931] [2023-08-04 02:42:22,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:42:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:42:22,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:42:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:42:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:42:22,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-04 02:42:22,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 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 02:42:22,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:42:22,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-04 02:42:22,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 02:42:37,467 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 02:42:37,467 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 02:42:38,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-08-04 02:42:38,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-04 02:42:38,524 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 02:42:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 02:42:38,525 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 02:42:38,525 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:42:38,525 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 02:42:38,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 02:42:38,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 02:42:38,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 02:42:38 BasicIcfg [2023-08-04 02:42:38,529 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 02:42:38,530 INFO L158 Benchmark]: Toolchain (without parser) took 605293.40ms. Allocated memory was 488.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 441.7MB in the beginning and 13.6GB in the end (delta: -13.2GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2023-08-04 02:42:38,530 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory was 300.1MB in the beginning and 300.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 02:42:38,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.41ms. Allocated memory is still 488.6MB. Free memory was 441.7MB in the beginning and 430.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 02:42:38,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.80ms. Allocated memory is still 488.6MB. Free memory was 430.1MB in the beginning and 428.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 02:42:38,531 INFO L158 Benchmark]: Boogie Preprocessor took 28.29ms. Allocated memory is still 488.6MB. Free memory was 428.3MB in the beginning and 426.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 02:42:38,531 INFO L158 Benchmark]: RCFGBuilder took 424.69ms. Allocated memory is still 488.6MB. Free memory was 426.6MB in the beginning and 409.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 02:42:38,531 INFO L158 Benchmark]: TraceAbstraction took 604589.63ms. Allocated memory was 488.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 408.9MB in the beginning and 13.6GB in the end (delta: -13.2GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2023-08-04 02:42:38,533 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory was 300.1MB in the beginning and 300.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 209.41ms. Allocated memory is still 488.6MB. Free memory was 441.7MB in the beginning and 430.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.80ms. Allocated memory is still 488.6MB. Free memory was 430.1MB in the beginning and 428.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.29ms. Allocated memory is still 488.6MB. Free memory was 428.3MB in the beginning and 426.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 424.69ms. Allocated memory is still 488.6MB. Free memory was 426.6MB in the beginning and 409.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 604589.63ms. Allocated memory was 488.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 408.9MB in the beginning and 13.6GB in the end (delta: -13.2GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 136 PlacesBefore, 43 PlacesAfterwards, 151 TransitionsBefore, 47 TransitionsAfterwards, 4464 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 18 ConcurrentYvCompositions, 11 ChoiceCompositions, 118 TotalNumberOfCompositions, 8443 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7052, independent: 7004, independent conditional: 0, independent unconditional: 7004, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2301, independent: 2288, independent conditional: 0, independent unconditional: 2288, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7052, independent: 4716, independent conditional: 0, independent unconditional: 4716, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 2301, unknown conditional: 0, unknown unconditional: 2301] , Statistics on independence cache: Total cache size (in pairs): 202, Positive cache size: 199, Positive conditional cache size: 0, Positive unconditional cache size: 199, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 166 PlacesBefore, 74 PlacesAfterwards, 190 TransitionsBefore, 87 TransitionsAfterwards, 11556 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 18 ConcurrentYvCompositions, 11 ChoiceCompositions, 119 TotalNumberOfCompositions, 48995 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34659, independent: 34373, independent conditional: 0, independent unconditional: 34373, dependent: 286, dependent conditional: 0, dependent unconditional: 286, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5942, independent: 5909, independent conditional: 0, independent unconditional: 5909, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34659, independent: 28464, independent conditional: 0, independent unconditional: 28464, dependent: 253, dependent conditional: 0, dependent unconditional: 253, unknown: 5942, unknown conditional: 0, unknown unconditional: 5942] , Statistics on independence cache: Total cache size (in pairs): 1528, Positive cache size: 1503, Positive conditional cache size: 0, Positive unconditional cache size: 1503, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 166 PlacesBefore, 74 PlacesAfterwards, 190 TransitionsBefore, 87 TransitionsAfterwards, 11556 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 18 ConcurrentYvCompositions, 11 ChoiceCompositions, 119 TotalNumberOfCompositions, 49015 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34416, independent: 34130, independent conditional: 0, independent unconditional: 34130, dependent: 286, dependent conditional: 0, dependent unconditional: 286, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5896, independent: 5871, independent conditional: 0, independent unconditional: 5871, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34416, independent: 28259, independent conditional: 0, independent unconditional: 28259, dependent: 261, dependent conditional: 0, dependent unconditional: 261, unknown: 5896, unknown conditional: 0, unknown unconditional: 5896] , Statistics on independence cache: Total cache size (in pairs): 1495, Positive cache size: 1478, Positive conditional cache size: 0, Positive unconditional cache size: 1478, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 154 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: 3.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred 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, 0.1s 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 10 procedures, 178 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: 271.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 265.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 632 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 567 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1150 IncrementalHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 16 mSDtfsCounter, 1150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=1, InterpolantAutomatonStates: 29, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 663 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 157/178 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 1 thread instances CFG has 10 procedures, 178 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: 329.9s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 324.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 295 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 216 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1243 IncrementalHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 10 mSDtfsCounter, 1243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=7, InterpolantAutomatonStates: 22, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 955 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 70/81 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown