/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/pthread-wmm_safe027_rmo_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:01:52,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:01:52,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:01:52,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:01:52,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:01:52,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:01:52,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:01:52,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:01:52,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:01:52,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:01:52,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:01:52,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:01:52,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:01:52,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:01:52,584 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:01:52,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:01:52,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:01:52,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:01:52,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:01:52,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:01:52,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:01:52,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:01:52,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:01:52,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:01:52,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:01:52,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:01:52,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:01:52,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:01:52,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:01:52,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:01:52,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:01:52,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:01:52,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:01:52,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:01:52,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:01:52,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:01:52,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:01:52,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:01:52,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:01:52,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:01:52,590 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:01:52,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:01:52,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:01:52,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:01:52,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:01:52,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:01:52,794 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:01:52,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_rmo_bound2.i [2023-08-04 01:01:54,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:01:54,267 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:01:54,267 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_rmo_bound2.i [2023-08-04 01:01:54,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b362dd509/8c8d14648d274d08bf52c52fd6d3727c/FLAG7d2a2df01 [2023-08-04 01:01:54,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b362dd509/8c8d14648d274d08bf52c52fd6d3727c [2023-08-04 01:01:54,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:01:54,302 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:01:54,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:01:54,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:01:54,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:01:54,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2f9589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54, skipping insertion in model container [2023-08-04 01:01:54,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,368 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:01:54,512 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_rmo_bound2.i[988,1001] [2023-08-04 01:01:54,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:01:54,668 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:01:54,678 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_rmo_bound2.i[988,1001] [2023-08-04 01:01:54,690 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:01:54,691 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:01:54,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:01:54,787 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:01:54,787 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:01:54,793 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:01:54,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54 WrapperNode [2023-08-04 01:01:54,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:01:54,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:01:54,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:01:54,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:01:54,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,847 INFO L138 Inliner]: procedures = 177, calls = 82, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 185 [2023-08-04 01:01:54,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:01:54,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:01:54,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:01:54,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:01:54,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:01:54,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:01:54,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:01:54,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:01:54,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (1/1) ... [2023-08-04 01:01:54,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:01:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:01:54,920 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 01:01:54,945 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 01:01:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:01:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:01:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 01:01:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:01:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:01:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:01:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 01:01:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 01:01:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 01:01:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 01:01:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 01:01:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 01:01:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 01:01:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 01:01:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:01:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 01:01:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:01:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:01:54,974 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 01:01:55,177 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:01:55,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:01:55,651 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:01:55,818 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:01:55,819 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 01:01:55,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:01:55 BoogieIcfgContainer [2023-08-04 01:01:55,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:01:55,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:01:55,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:01:55,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:01:55,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:01:54" (1/3) ... [2023-08-04 01:01:55,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d483aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:01:55, skipping insertion in model container [2023-08-04 01:01:55,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:01:54" (2/3) ... [2023-08-04 01:01:55,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d483aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:01:55, skipping insertion in model container [2023-08-04 01:01:55,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:01:55" (3/3) ... [2023-08-04 01:01:55,829 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe027_rmo_bound2.i [2023-08-04 01:01:55,835 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:01:55,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:01:55,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:01:55,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:01:55,931 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:01:55,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 171 transitions, 362 flow [2023-08-04 01:01:56,190 INFO L124 PetriNetUnfolderBase]: 62/926 cut-off events. [2023-08-04 01:01:56,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:01:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 926 events. 62/926 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5513 event pairs, 0 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 563. Up to 32 conditions per place. [2023-08-04 01:01:56,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 171 transitions, 362 flow [2023-08-04 01:01:56,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 140 transitions, 300 flow [2023-08-04 01:01:56,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:01:56,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 140 transitions, 300 flow [2023-08-04 01:01:56,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 140 transitions, 300 flow [2023-08-04 01:01:56,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 140 transitions, 300 flow [2023-08-04 01:01:56,278 INFO L124 PetriNetUnfolderBase]: 14/430 cut-off events. [2023-08-04 01:01:56,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:01:56,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 430 events. 14/430 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1804 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2023-08-04 01:01:56,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 1876 [2023-08-04 01:02:01,486 INFO L134 LiptonReduction]: Checked pairs total: 4169 [2023-08-04 01:02:01,486 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-04 01:02:01,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:02:01,502 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;@4a13dbc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:02:01,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:02:01,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:02:01,508 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 01:02:01,508 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:02:01,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:02:01,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:02:01,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:02:01,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:02:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1010221325, now seen corresponding path program 1 times [2023-08-04 01:02:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:02:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736612203] [2023-08-04 01:02:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:02:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:02:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:02:01,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:02:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:02:01,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:02:01,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:02:01,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:02:01,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:02:01,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:02:01,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:02:01,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:02:01,666 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:02:01,669 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:02:01,669 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:02:01,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:02:01,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:02:01,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 198 transitions, 444 flow [2023-08-04 01:02:02,390 INFO L124 PetriNetUnfolderBase]: 282/4202 cut-off events. [2023-08-04 01:02:02,390 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:02:02,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 4202 events. 282/4202 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 39818 event pairs, 0 based on Foata normal form. 0/3719 useless extension candidates. Maximal degree in co-relation 3051. Up to 162 conditions per place. [2023-08-04 01:02:02,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 198 transitions, 444 flow [2023-08-04 01:02:02,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 167 transitions, 382 flow [2023-08-04 01:02:02,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:02:02,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 167 transitions, 382 flow [2023-08-04 01:02:02,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 167 transitions, 382 flow [2023-08-04 01:02:02,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 167 transitions, 382 flow [2023-08-04 01:02:02,624 INFO L124 PetriNetUnfolderBase]: 39/1691 cut-off events. [2023-08-04 01:02:02,625 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:02:02,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1980 conditions, 1691 events. 39/1691 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 12783 event pairs, 0 based on Foata normal form. 0/1613 useless extension candidates. Maximal degree in co-relation 1377. Up to 81 conditions per place. [2023-08-04 01:02:02,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 4992 [2023-08-04 01:02:08,084 INFO L134 LiptonReduction]: Checked pairs total: 13375 [2023-08-04 01:02:08,084 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-04 01:02:08,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:02:08,090 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;@4a13dbc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:02:08,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:02:08,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:02:08,099 INFO L124 PetriNetUnfolderBase]: 0/87 cut-off events. [2023-08-04 01:02:08,099 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 01:02:08,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:02:08,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:02:08,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:02:08,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:02:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash -15508310, now seen corresponding path program 1 times [2023-08-04 01:02:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:02:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110894625] [2023-08-04 01:02:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:02:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:02:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:02:08,295 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 01:02:08,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:02:08,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110894625] [2023-08-04 01:02:08,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110894625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:02:08,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:02:08,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:02:08,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328258704] [2023-08-04 01:02:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:02:08,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:02:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:02:08,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:02:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:02:08,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 322 [2023-08-04 01:02:08,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 01:02:08,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:02:08,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 322 [2023-08-04 01:02:08,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:03:32,232 INFO L124 PetriNetUnfolderBase]: 634776/785110 cut-off events. [2023-08-04 01:03:32,232 INFO L125 PetriNetUnfolderBase]: For 45840/45840 co-relation queries the response was YES. [2023-08-04 01:03:34,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617855 conditions, 785110 events. 634776/785110 cut-off events. For 45840/45840 co-relation queries the response was YES. Maximal size of possible extension queue 16735. Compared 4753726 event pairs, 538458 based on Foata normal form. 0/781531 useless extension candidates. Maximal degree in co-relation 475066. Up to 779254 conditions per place. [2023-08-04 01:03:38,163 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 41 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 01:03:38,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 53 transitions, 240 flow [2023-08-04 01:03:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:03:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:03:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-04 01:03:38,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766045548654244 [2023-08-04 01:03:38,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-04 01:03:38,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-04 01:03:38,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:03:38,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-04 01:03:38,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 01:03:38,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 01:03:38,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 01:03:38,193 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 146 flow. Second operand 3 states and 557 transitions. [2023-08-04 01:03:38,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 53 transitions, 240 flow [2023-08-04 01:03:38,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 53 transitions, 232 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-04 01:03:38,229 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 150 flow [2023-08-04 01:03:38,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-08-04 01:03:38,234 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-04 01:03:38,234 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 150 flow [2023-08-04 01:03:38,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 01:03:38,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:03:38,235 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:03:38,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 01:03:38,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:03:38,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:03:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 749433761, now seen corresponding path program 1 times [2023-08-04 01:03:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:03:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017617342] [2023-08-04 01:03:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:03:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:03:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:03:38,349 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 01:03:38,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:03:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017617342] [2023-08-04 01:03:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017617342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:03:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005235860] [2023-08-04 01:03:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:03:38,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:03:38,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:03:38,361 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 01:03:38,392 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 01:03:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:03:38,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:03:38,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:03:38,567 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 01:03:38,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:03:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005235860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:03:38,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:03:38,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:03:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776532000] [2023-08-04 01:03:38,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:03:38,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:03:38,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:03:38,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:03:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:03:38,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 322 [2023-08-04 01:03:38,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 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 01:03:38,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:03:38,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 322 [2023-08-04 01:03:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:05:01,601 INFO L124 PetriNetUnfolderBase]: 634764/785053 cut-off events. [2023-08-04 01:05:01,601 INFO L125 PetriNetUnfolderBase]: For 43167/43167 co-relation queries the response was YES. [2023-08-04 01:05:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615161 conditions, 785053 events. 634764/785053 cut-off events. For 43167/43167 co-relation queries the response was YES. Maximal size of possible extension queue 16735. Compared 4753636 event pairs, 466224 based on Foata normal form. 9/781522 useless extension candidates. Maximal degree in co-relation 570479. Up to 779207 conditions per place. [2023-08-04 01:05:07,063 INFO L140 encePairwiseOnDemand]: 318/322 looper letters, 44 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-04 01:05:07,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 57 transitions, 260 flow [2023-08-04 01:05:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:05:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:05:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2023-08-04 01:05:07,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583850931677019 [2023-08-04 01:05:07,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2023-08-04 01:05:07,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2023-08-04 01:05:07,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:05:07,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2023-08-04 01:05:07,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 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 01:05:07,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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 01:05:07,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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 01:05:07,073 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 150 flow. Second operand 5 states and 899 transitions. [2023-08-04 01:05:07,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 57 transitions, 260 flow [2023-08-04 01:05:07,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 57 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:05:07,076 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 164 flow [2023-08-04 01:05:07,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-08-04 01:05:07,077 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2023-08-04 01:05:07,077 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 164 flow [2023-08-04 01:05:07,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 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 01:05:07,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:05:07,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:05:07,087 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 01:05:07,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:05:07,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:05:07,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:05:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2090356069, now seen corresponding path program 1 times [2023-08-04 01:05:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:05:07,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109945866] [2023-08-04 01:05:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:05:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:05:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:05:07,363 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 01:05:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:05:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109945866] [2023-08-04 01:05:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109945866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:05:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709672561] [2023-08-04 01:05:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:05:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:05:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:05:07,369 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 01:05:07,373 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 01:05:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:05:07,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:05:07,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:05:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:05:07,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:05:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709672561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:05:07,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:05:07,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:05:07,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377756793] [2023-08-04 01:05:07,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:05:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:05:07,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:05:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:05:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:05:07,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 322 [2023-08-04 01:05:07,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 01:05:07,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:05:07,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 322 [2023-08-04 01:05:07,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:06:25,352 INFO L124 PetriNetUnfolderBase]: 597938/741152 cut-off events. [2023-08-04 01:06:25,353 INFO L125 PetriNetUnfolderBase]: For 38950/38950 co-relation queries the response was YES. [2023-08-04 01:06:28,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521561 conditions, 741152 events. 597938/741152 cut-off events. For 38950/38950 co-relation queries the response was YES. Maximal size of possible extension queue 16569. Compared 4506697 event pairs, 508996 based on Foata normal form. 0/737792 useless extension candidates. Maximal degree in co-relation 447892. Up to 731206 conditions per place. [2023-08-04 01:06:30,994 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 46 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-04 01:06:30,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 58 transitions, 278 flow [2023-08-04 01:06:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:06:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:06:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-04 01:06:31,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807453416149069 [2023-08-04 01:06:31,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-04 01:06:31,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-04 01:06:31,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:06:31,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-04 01:06:31,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 01:06:31,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 01:06:31,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 01:06:31,007 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 164 flow. Second operand 3 states and 561 transitions. [2023-08-04 01:06:31,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 58 transitions, 278 flow [2023-08-04 01:06:31,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 271 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 01:06:31,029 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 172 flow [2023-08-04 01:06:31,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-08-04 01:06:31,030 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2023-08-04 01:06:31,030 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 172 flow [2023-08-04 01:06:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 01:06:31,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:31,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:06:31,038 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 01:06:31,238 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 01:06:31,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:06:31,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:31,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1321839038, now seen corresponding path program 1 times [2023-08-04 01:06:31,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:31,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526216743] [2023-08-04 01:06:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:31,298 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 01:06:31,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:06:31,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526216743] [2023-08-04 01:06:31,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526216743] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:06:31,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945217691] [2023-08-04 01:06:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:31,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:06:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:06:31,301 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 01:06:31,305 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 01:06:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:31,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:06:31,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:06:31,442 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 01:06:31,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:06:31,459 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 01:06:31,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945217691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:06:31,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:06:31,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:06:31,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387708470] [2023-08-04 01:06:31,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:06:31,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:06:31,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:06:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:06:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:06:31,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 322 [2023-08-04 01:06:31,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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 01:06:31,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:06:31,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 322 [2023-08-04 01:06:31,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:07:34,073 INFO L124 PetriNetUnfolderBase]: 465130/572627 cut-off events. [2023-08-04 01:07:34,074 INFO L125 PetriNetUnfolderBase]: For 29232/29232 co-relation queries the response was YES. [2023-08-04 01:07:36,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174874 conditions, 572627 events. 465130/572627 cut-off events. For 29232/29232 co-relation queries the response was YES. Maximal size of possible extension queue 13351. Compared 3342358 event pairs, 331740 based on Foata normal form. 3/570191 useless extension candidates. Maximal degree in co-relation 413833. Up to 565156 conditions per place. [2023-08-04 01:07:38,647 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 45 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-04 01:07:38,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 57 transitions, 275 flow [2023-08-04 01:07:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:07:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:07:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-08-04 01:07:38,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2023-08-04 01:07:38,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-08-04 01:07:38,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-08-04 01:07:38,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:07:38,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-08-04 01:07:38,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 01:07:38,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 01:07:38,655 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 01:07:38,655 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 172 flow. Second operand 4 states and 728 transitions. [2023-08-04 01:07:38,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 57 transitions, 275 flow [2023-08-04 01:07:38,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 57 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:07:38,657 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 167 flow [2023-08-04 01:07:38,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2023-08-04 01:07:38,658 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-04 01:07:38,658 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 167 flow [2023-08-04 01:07:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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 01:07:38,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:07:38,659 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:07:38,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 01:07:38,867 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 01:07:38,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:07:38,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:07:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1304466426, now seen corresponding path program 1 times [2023-08-04 01:07:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:07:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241295298] [2023-08-04 01:07:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:07:38,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:07:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:07:38,962 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 01:07:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:07:38,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241295298] [2023-08-04 01:07:38,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241295298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:07:38,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087738261] [2023-08-04 01:07:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:07:38,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:07:38,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:07:38,965 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 01:07:38,967 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 01:07:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:07:39,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:07:39,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:07:39,105 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 01:07:39,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:07:39,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087738261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:07:39,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:07:39,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:07:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866665987] [2023-08-04 01:07:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:07:39,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:07:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:07:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:07:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:07:39,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 322 [2023-08-04 01:07:39,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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 01:07:39,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:07:39,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 322 [2023-08-04 01:07:39,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:08:44,032 INFO L124 PetriNetUnfolderBase]: 464914/572389 cut-off events. [2023-08-04 01:08:44,032 INFO L125 PetriNetUnfolderBase]: For 28870/28870 co-relation queries the response was YES. [2023-08-04 01:08:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174298 conditions, 572389 events. 464914/572389 cut-off events. For 28870/28870 co-relation queries the response was YES. Maximal size of possible extension queue 13334. Compared 3341832 event pairs, 215158 based on Foata normal form. 81/570085 useless extension candidates. Maximal degree in co-relation 413621. Up to 564327 conditions per place. [2023-08-04 01:08:48,509 INFO L140 encePairwiseOnDemand]: 318/322 looper letters, 57 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-04 01:08:48,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 327 flow [2023-08-04 01:08:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:08:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:08:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2023-08-04 01:08:48,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658385093167702 [2023-08-04 01:08:48,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 911 transitions. [2023-08-04 01:08:48,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 911 transitions. [2023-08-04 01:08:48,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:08:48,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 911 transitions. [2023-08-04 01:08:48,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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 01:08:48,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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 01:08:48,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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 01:08:48,518 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 167 flow. Second operand 5 states and 911 transitions. [2023-08-04 01:08:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 327 flow [2023-08-04 01:08:48,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:08:48,528 INFO L231 Difference]: Finished difference. Result has 76 places, 50 transitions, 177 flow [2023-08-04 01:08:48,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=50} [2023-08-04 01:08:48,529 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2023-08-04 01:08:48,529 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 50 transitions, 177 flow [2023-08-04 01:08:48,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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 01:08:48,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:08:48,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:08:48,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 01:08:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:08:48,737 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:08:48,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:08:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -242550025, now seen corresponding path program 1 times [2023-08-04 01:08:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:08:48,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952277997] [2023-08-04 01:08:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:08:48,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:08:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:08:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 01:08:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:08:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952277997] [2023-08-04 01:08:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952277997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:08:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026882040] [2023-08-04 01:08:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:08:48,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:08:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:08:48,829 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 01:08:48,837 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 01:08:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:08:48,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:08:48,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:08:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:08:48,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:08:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026882040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:08:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:08:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 01:08:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888973606] [2023-08-04 01:08:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:08:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:08:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:08:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:08:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:08:48,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 322 [2023-08-04 01:08:48,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 50 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 01:08:48,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:08:48,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 322 [2023-08-04 01:08:48,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:09:54,430 INFO L124 PetriNetUnfolderBase]: 449632/560023 cut-off events. [2023-08-04 01:09:54,431 INFO L125 PetriNetUnfolderBase]: For 26983/26983 co-relation queries the response was YES. [2023-08-04 01:09:56,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144631 conditions, 560023 events. 449632/560023 cut-off events. For 26983/26983 co-relation queries the response was YES. Maximal size of possible extension queue 13902. Compared 3400420 event pairs, 377056 based on Foata normal form. 0/557422 useless extension candidates. Maximal degree in co-relation 402749. Up to 542911 conditions per place. [2023-08-04 01:09:58,987 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 52 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-04 01:09:58,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 63 transitions, 313 flow [2023-08-04 01:09:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:09:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:09:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-04 01:09:58,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5859213250517599 [2023-08-04 01:09:58,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-04 01:09:58,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-04 01:09:58,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:09:58,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-04 01:09:58,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 01:09:58,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 01:09:58,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 01:09:58,992 INFO L175 Difference]: Start difference. First operand has 76 places, 50 transitions, 177 flow. Second operand 3 states and 566 transitions. [2023-08-04 01:09:58,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 63 transitions, 313 flow [2023-08-04 01:09:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 63 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 01:09:59,002 INFO L231 Difference]: Finished difference. Result has 77 places, 51 transitions, 185 flow [2023-08-04 01:09:59,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=51} [2023-08-04 01:09:59,003 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2023-08-04 01:09:59,003 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 51 transitions, 185 flow [2023-08-04 01:09:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 01:09:59,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:09:59,003 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 01:09:59,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:09:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:59,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:09:59,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:09:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2077490750, now seen corresponding path program 1 times [2023-08-04 01:09:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:09:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340659872] [2023-08-04 01:09:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:09:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:59,272 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 01:09:59,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:09:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340659872] [2023-08-04 01:09:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340659872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:09:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674606337] [2023-08-04 01:09:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:59,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:09:59,274 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 01:09:59,276 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 01:09:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:59,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:09:59,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:09:59,403 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 01:09:59,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:09:59,419 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 01:09:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674606337] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:09:59,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:09:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:09:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138868301] [2023-08-04 01:09:59,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:09:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:09:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:09:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:09:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:09:59,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 322 [2023-08-04 01:09:59,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 51 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 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 01:09:59,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:09:59,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 322 [2023-08-04 01:09:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:10:49,988 INFO L124 PetriNetUnfolderBase]: 349273/432151 cut-off events. [2023-08-04 01:10:49,989 INFO L125 PetriNetUnfolderBase]: For 23569/23569 co-relation queries the response was YES. [2023-08-04 01:10:52,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886395 conditions, 432151 events. 349273/432151 cut-off events. For 23569/23569 co-relation queries the response was YES. Maximal size of possible extension queue 12060. Compared 2515583 event pairs, 253579 based on Foata normal form. 27/431845 useless extension candidates. Maximal degree in co-relation 311378. Up to 420496 conditions per place. [2023-08-04 01:10:53,837 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 54 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-04 01:10:53,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 322 flow [2023-08-04 01:10:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:10:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:10:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2023-08-04 01:10:53,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-08-04 01:10:53,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2023-08-04 01:10:53,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2023-08-04 01:10:53,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:10:53,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2023-08-04 01:10:53,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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 01:10:53,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 01:10:53,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 01:10:53,842 INFO L175 Difference]: Start difference. First operand has 77 places, 51 transitions, 185 flow. Second operand 4 states and 736 transitions. [2023-08-04 01:10:53,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 322 flow [2023-08-04 01:10:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 65 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:10:53,847 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 180 flow [2023-08-04 01:10:53,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2023-08-04 01:10:53,847 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2023-08-04 01:10:53,848 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 180 flow [2023-08-04 01:10:53,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 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 01:10:53,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:10:53,848 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 01:10:53,855 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 01:10:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:10:54,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:10:54,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:10:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash 900373299, now seen corresponding path program 1 times [2023-08-04 01:10:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:10:54,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459645819] [2023-08-04 01:10:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:10:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:10:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:10:54,134 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 01:10:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:10:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459645819] [2023-08-04 01:10:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459645819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:10:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837592718] [2023-08-04 01:10:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:10:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:10:54,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:10:54,136 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 01:10:54,162 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 01:10:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:10:54,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:10:54,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:10:54,293 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 01:10:54,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:10:54,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837592718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:10:54,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:10:54,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:10:54,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383674668] [2023-08-04 01:10:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:10:54,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:10:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:10:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:10:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:10:54,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 322 [2023-08-04 01:10:54,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 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 01:10:54,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:10:54,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 322 [2023-08-04 01:10:54,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:11:39,518 INFO L124 PetriNetUnfolderBase]: 343873/426103 cut-off events. [2023-08-04 01:11:39,518 INFO L125 PetriNetUnfolderBase]: For 19288/19288 co-relation queries the response was YES. [2023-08-04 01:11:41,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873120 conditions, 426103 events. 343873/426103 cut-off events. For 19288/19288 co-relation queries the response was YES. Maximal size of possible extension queue 12083. Compared 2502296 event pairs, 63748 based on Foata normal form. 1296/427390 useless extension candidates. Maximal degree in co-relation 306665. Up to 403083 conditions per place. [2023-08-04 01:11:43,277 INFO L140 encePairwiseOnDemand]: 318/322 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-04 01:11:43,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 402 flow [2023-08-04 01:11:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:11:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:11:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 926 transitions. [2023-08-04 01:11:43,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751552795031056 [2023-08-04 01:11:43,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 926 transitions. [2023-08-04 01:11:43,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 926 transitions. [2023-08-04 01:11:43,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:11:43,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 926 transitions. [2023-08-04 01:11:43,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 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 01:11:43,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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 01:11:43,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 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 01:11:43,285 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 180 flow. Second operand 5 states and 926 transitions. [2023-08-04 01:11:43,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 402 flow [2023-08-04 01:11:43,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 395 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:11:43,317 INFO L231 Difference]: Finished difference. Result has 80 places, 50 transitions, 190 flow [2023-08-04 01:11:43,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=50} [2023-08-04 01:11:43,318 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2023-08-04 01:11:43,318 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 50 transitions, 190 flow [2023-08-04 01:11:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 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 01:11:43,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:11:43,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:11:43,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:11:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:11:43,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:11:43,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:11:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1088123726, now seen corresponding path program 1 times [2023-08-04 01:11:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:11:43,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576730958] [2023-08-04 01:11:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:11:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:11:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:11:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:11:43,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:11:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576730958] [2023-08-04 01:11:43,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576730958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:11:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627013806] [2023-08-04 01:11:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:11:43,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:11:43,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:11:43,604 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 01:11:43,607 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 01:11:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:11:43,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:11:43,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:11:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:11:43,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:11:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:11:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627013806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:11:43,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:11:43,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:11:43,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491524178] [2023-08-04 01:11:43,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:11:43,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:11:43,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:11:43,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:11:43,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:11:43,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 322 [2023-08-04 01:11:43,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 50 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 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 01:11:43,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:11:43,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 322 [2023-08-04 01:11:43,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:12:22,533 INFO L124 PetriNetUnfolderBase]: 285850/352528 cut-off events. [2023-08-04 01:12:22,533 INFO L125 PetriNetUnfolderBase]: For 23740/23740 co-relation queries the response was YES. [2023-08-04 01:12:24,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726988 conditions, 352528 events. 285850/352528 cut-off events. For 23740/23740 co-relation queries the response was YES. Maximal size of possible extension queue 11347. Compared 1995321 event pairs, 196264 based on Foata normal form. 324/352843 useless extension candidates. Maximal degree in co-relation 255002. Up to 332635 conditions per place. [2023-08-04 01:12:25,655 INFO L140 encePairwiseOnDemand]: 319/322 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-04 01:12:25,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 372 flow [2023-08-04 01:12:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:12:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:12:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 747 transitions. [2023-08-04 01:12:25,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799689440993789 [2023-08-04 01:12:25,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 747 transitions. [2023-08-04 01:12:25,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 747 transitions. [2023-08-04 01:12:25,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:12:25,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 747 transitions. [2023-08-04 01:12:25,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 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 01:12:25,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 01:12:25,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 01:12:25,661 INFO L175 Difference]: Start difference. First operand has 80 places, 50 transitions, 190 flow. Second operand 4 states and 747 transitions. [2023-08-04 01:12:25,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 372 flow [2023-08-04 01:12:25,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 367 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 01:12:25,679 INFO L231 Difference]: Finished difference. Result has 81 places, 49 transitions, 183 flow [2023-08-04 01:12:25,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=81, PETRI_TRANSITIONS=49} [2023-08-04 01:12:25,680 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2023-08-04 01:12:25,680 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 49 transitions, 183 flow [2023-08-04 01:12:25,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 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 01:12:25,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:12:25,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:12:25,689 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 01:12:25,886 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,SelfDestructingSolverStorable9 [2023-08-04 01:12:25,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:12:25,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:12:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash 337266681, now seen corresponding path program 1 times [2023-08-04 01:12:25,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:12:25,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125839961] [2023-08-04 01:12:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:12:25,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:12:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:12:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:12:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:12:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125839961] [2023-08-04 01:12:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125839961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:12:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789857288] [2023-08-04 01:12:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:12:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:12:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:12:25,954 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 01:12:25,957 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 01:12:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:12:26,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:12:26,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:12:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:12:26,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:12:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789857288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:12:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:12:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:12:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357338786] [2023-08-04 01:12:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:12:26,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 01:12:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:12:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 01:12:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:12:26,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 322 [2023-08-04 01:12:26,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 49 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 01:12:26,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:12:26,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 322 [2023-08-04 01:12:26,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 01:12:35,321 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 01:12:35,321 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 01:12:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:12:35,650 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:12:35,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 01:12:35,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:12:35,852 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/322 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 176482 conditions, 81372 events (65238/81371 cut-off events. For 16142/16142 co-relation queries the response was YES. Maximal size of possible extension queue 6020. Compared 437485 event pairs, 13824 based on Foata normal form. 2455/89833 useless extension candidates. Maximal degree in co-relation 129398. Up to 35393 conditions per place.). [2023-08-04 01:12:35,852 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:12:35,852 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:12:35,852 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:12:35,852 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:12:35,853 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-04 01:12:35,854 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:12:35,854 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:12:35,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:12:35 BasicIcfg [2023-08-04 01:12:35,857 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:12:35,857 INFO L158 Benchmark]: Toolchain (without parser) took 641555.82ms. Allocated memory was 471.9MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 422.7MB in the beginning and 11.7GB in the end (delta: -11.2GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-08-04 01:12:35,858 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 331.4MB. Free memory is still 286.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:12:35,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.15ms. Allocated memory is still 471.9MB. Free memory was 422.4MB in the beginning and 397.6MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.62ms. Allocated memory is still 471.9MB. Free memory was 397.6MB in the beginning and 394.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,858 INFO L158 Benchmark]: Boogie Preprocessor took 40.21ms. Allocated memory is still 471.9MB. Free memory was 394.9MB in the beginning and 392.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,859 INFO L158 Benchmark]: RCFGBuilder took 932.11ms. Allocated memory is still 471.9MB. Free memory was 392.5MB in the beginning and 380.3MB in the end (delta: 12.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,859 INFO L158 Benchmark]: TraceAbstraction took 640033.71ms. Allocated memory was 471.9MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 379.7MB in the beginning and 11.7GB in the end (delta: -11.3GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-08-04 01:12:35,860 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 331.4MB. Free memory is still 286.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 492.15ms. Allocated memory is still 471.9MB. Free memory was 422.4MB in the beginning and 397.6MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.62ms. Allocated memory is still 471.9MB. Free memory was 397.6MB in the beginning and 394.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.21ms. Allocated memory is still 471.9MB. Free memory was 394.9MB in the beginning and 392.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 932.11ms. Allocated memory is still 471.9MB. Free memory was 392.5MB in the beginning and 380.3MB in the end (delta: 12.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.0GB. * TraceAbstraction took 640033.71ms. Allocated memory was 471.9MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 379.7MB in the beginning and 11.7GB in the end (delta: -11.3GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 146 PlacesBefore, 39 PlacesAfterwards, 140 TransitionsBefore, 30 TransitionsAfterwards, 1876 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 116 TotalNumberOfCompositions, 4169 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 2029, independent conditional: 0, independent unconditional: 2029, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 955, independent: 929, independent conditional: 0, independent unconditional: 929, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2201, independent: 1100, independent conditional: 0, independent unconditional: 1100, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 955, unknown conditional: 0, unknown unconditional: 955] , Statistics on independence cache: Total cache size (in pairs): 93, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 181 PlacesBefore, 66 PlacesAfterwards, 167 TransitionsBefore, 49 TransitionsAfterwards, 4992 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 124 TotalNumberOfCompositions, 13375 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6502, independent: 6213, independent conditional: 0, independent unconditional: 6213, dependent: 289, dependent conditional: 0, dependent unconditional: 289, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2493, independent: 2437, independent conditional: 0, independent unconditional: 2437, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6502, independent: 3776, independent conditional: 0, independent unconditional: 3776, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 2493, unknown conditional: 0, unknown unconditional: 2493] , Statistics on independence cache: Total cache size (in pairs): 320, Positive cache size: 297, Positive conditional cache size: 0, Positive unconditional cache size: 297, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 870]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/322 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 176482 conditions, 81372 events (65238/81371 cut-off events. For 16142/16142 co-relation queries the response was YES. Maximal size of possible extension queue 6020. Compared 437485 event pairs, 13824 based on Foata normal form. 2455/89833 useless extension candidates. Maximal degree in co-relation 129398. Up to 35393 conditions per place.). - TimeoutResultAtElement [Line: 868]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/322 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 176482 conditions, 81372 events (65238/81371 cut-off events. For 16142/16142 co-relation queries the response was YES. Maximal size of possible extension queue 6020. Compared 437485 event pairs, 13824 based on Foata normal form. 2455/89833 useless extension candidates. Maximal degree in co-relation 129398. Up to 35393 conditions per place.). - TimeoutResultAtElement [Line: 864]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/322 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 176482 conditions, 81372 events (65238/81371 cut-off events. For 16142/16142 co-relation queries the response was YES. Maximal size of possible extension queue 6020. Compared 437485 event pairs, 13824 based on Foata normal form. 2455/89833 useless extension candidates. Maximal degree in co-relation 129398. Up to 35393 conditions per place.). - TimeoutResultAtElement [Line: 866]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/322 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 176482 conditions, 81372 events (65238/81371 cut-off events. For 16142/16142 co-relation queries the response was YES. Maximal size of possible extension queue 6020. Compared 437485 event pairs, 13824 based on Foata normal form. 2455/89833 useless extension candidates. Maximal degree in co-relation 129398. Up to 35393 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 9 procedures, 193 locations, 5 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: 5.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 13 procedures, 220 locations, 5 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: 634.1s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 622.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 526 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 459 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1112 IncrementalHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 11 mSDtfsCounter, 1112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 266 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=8, InterpolantAutomatonStates: 36, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2408 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 268/297 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