/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:19:16,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:19:16,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:19:16,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:19:16,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:19:16,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:19:16,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:19:16,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:19:16,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:19:16,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:19:16,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:19:16,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:19:16,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:19:16,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:19:16,169 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:19:16,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:19:16,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:19:16,169 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:19:16,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:19:16,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:19:16,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:19:16,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:19:16,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:19:16,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:19:16,178 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:19:16,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:19:16,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:19:16,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:19:16,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:19:16,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:19:16,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:19:16,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:19:16,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:19:16,182 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:19:16,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:19:16,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:19:16,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:19:16,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:19:16,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:19:16,354 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:19:16,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c [2023-08-04 03:19:17,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:19:17,588 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:19:17,589 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c [2023-08-04 03:19:17,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c268d9b0/e14d3ff656cb486ab4f8a029c64fc213/FLAGf6490421c [2023-08-04 03:19:17,608 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c268d9b0/e14d3ff656cb486ab4f8a029c64fc213 [2023-08-04 03:19:17,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:19:17,611 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:19:17,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:19:17,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:19:17,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:19:17,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c21c587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17, skipping insertion in model container [2023-08-04 03:19:17,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,635 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:19:17,778 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c[2933,2946] [2023-08-04 03:19:17,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:19:17,790 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:19:17,810 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c[2933,2946] [2023-08-04 03:19:17,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:19:17,819 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:19:17,819 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:19:17,825 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:19:17,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17 WrapperNode [2023-08-04 03:19:17,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:19:17,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:19:17,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:19:17,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:19:17,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,859 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 172 [2023-08-04 03:19:17,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:19:17,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:19:17,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:19:17,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:19:17,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:19:17,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:19:17,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:19:17,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:19:17,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (1/1) ... [2023-08-04 03:19:17,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:19:17,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:19:17,926 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 03:19:17,928 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 03:19:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:19:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:19:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:19:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:19:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:19:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:19:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:19:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:19:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 03:19:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 03:19:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:19:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 03:19:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 03:19:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 03:19:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:19:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:19:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:19:17,960 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 03:19:18,045 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:19:18,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:19:18,296 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:19:18,318 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:19:18,318 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-04 03:19:18,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:19:18 BoogieIcfgContainer [2023-08-04 03:19:18,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:19:18,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:19:18,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:19:18,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:19:18,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:19:17" (1/3) ... [2023-08-04 03:19:18,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40197513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:19:18, skipping insertion in model container [2023-08-04 03:19:18,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:19:17" (2/3) ... [2023-08-04 03:19:18,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40197513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:19:18, skipping insertion in model container [2023-08-04 03:19:18,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:19:18" (3/3) ... [2023-08-04 03:19:18,327 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-simple-array-sum.wvr_bound2.c [2023-08-04 03:19:18,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:19:18,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:19:18,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:19:18,340 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:19:18,432 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 03:19:18,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 486 flow [2023-08-04 03:19:18,639 INFO L124 PetriNetUnfolderBase]: 108/700 cut-off events. [2023-08-04 03:19:18,640 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:19:18,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 700 events. 108/700 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3391 event pairs, 0 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-04 03:19:18,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 222 transitions, 486 flow [2023-08-04 03:19:18,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 222 transitions, 486 flow [2023-08-04 03:19:18,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:19:18,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 222 transitions, 486 flow [2023-08-04 03:19:18,683 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 222 transitions, 486 flow [2023-08-04 03:19:18,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 486 flow [2023-08-04 03:19:18,751 INFO L124 PetriNetUnfolderBase]: 108/700 cut-off events. [2023-08-04 03:19:18,751 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:19:18,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 700 events. 108/700 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3391 event pairs, 0 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-04 03:19:18,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 6378 [2023-08-04 03:19:23,553 INFO L134 LiptonReduction]: Checked pairs total: 12584 [2023-08-04 03:19:23,554 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-04 03:19:23,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:19:23,572 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;@25fc5a90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:19:23,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:19:23,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:19:23,577 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-08-04 03:19:23,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:19:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:19:23,578 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:19:23,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:19:23,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:19:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1359857046, now seen corresponding path program 1 times [2023-08-04 03:19:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:19:23,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734139088] [2023-08-04 03:19:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:19:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:19:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:19:23,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:19:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:19:23,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:19:23,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:19:23,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:19:23,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:19:23,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:19:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:19:23,833 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:19:23,835 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 03:19:23,836 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:19:23,836 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:19:23,872 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 03:19:23,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 630 flow [2023-08-04 03:19:24,321 INFO L124 PetriNetUnfolderBase]: 912/4237 cut-off events. [2023-08-04 03:19:24,322 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:19:24,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 4237 events. 912/4237 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33987 event pairs, 22 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-08-04 03:19:24,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 270 transitions, 630 flow [2023-08-04 03:19:24,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 270 transitions, 630 flow [2023-08-04 03:19:24,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:19:24,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 270 transitions, 630 flow [2023-08-04 03:19:24,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 270 transitions, 630 flow [2023-08-04 03:19:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 630 flow [2023-08-04 03:19:24,846 INFO L124 PetriNetUnfolderBase]: 912/4237 cut-off events. [2023-08-04 03:19:24,846 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:19:24,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 4237 events. 912/4237 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33987 event pairs, 22 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-08-04 03:19:24,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 16856 [2023-08-04 03:19:29,163 INFO L134 LiptonReduction]: Checked pairs total: 44920 [2023-08-04 03:19:29,163 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-08-04 03:19:29,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:19:29,170 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;@25fc5a90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:19:29,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:19:29,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:19:29,177 INFO L124 PetriNetUnfolderBase]: 21/132 cut-off events. [2023-08-04 03:19:29,177 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 03:19:29,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:19:29,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:19:29,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:19:29,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:19:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1692731585, now seen corresponding path program 1 times [2023-08-04 03:19:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:19:29,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415281598] [2023-08-04 03:19:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:19:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:19:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:19:29,358 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 03:19:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:19:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415281598] [2023-08-04 03:19:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415281598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:19:29,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666366344] [2023-08-04 03:19:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:19:29,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:19:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:19:29,373 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 03:19:29,442 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 03:19:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:19:29,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:19:29,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:19:29,545 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 03:19:29,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:19:29,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666366344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:19:29,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:19:29,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:19:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315938257] [2023-08-04 03:19:29,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:19:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:19:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:19:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:19:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:19:29,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-04 03:19:29,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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 03:19:29,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:19:29,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-04 03:19:29,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:20:52,894 INFO L124 PetriNetUnfolderBase]: 1200303/1407826 cut-off events. [2023-08-04 03:20:52,894 INFO L125 PetriNetUnfolderBase]: For 123614/123614 co-relation queries the response was YES. [2023-08-04 03:20:57,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844113 conditions, 1407826 events. 1200303/1407826 cut-off events. For 123614/123614 co-relation queries the response was YES. Maximal size of possible extension queue 26670. Compared 7128026 event pairs, 428941 based on Foata normal form. 0/805968 useless extension candidates. Maximal degree in co-relation 1000187. Up to 1372045 conditions per place. [2023-08-04 03:20:59,594 INFO L140 encePairwiseOnDemand]: 490/495 looper letters, 47 selfloop transitions, 5 changer transitions 31/94 dead transitions. [2023-08-04 03:20:59,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 434 flow [2023-08-04 03:20:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:20:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:20:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1167 transitions. [2023-08-04 03:20:59,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715151515151515 [2023-08-04 03:20:59,616 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1167 transitions. [2023-08-04 03:20:59,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1167 transitions. [2023-08-04 03:20:59,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:20:59,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1167 transitions. [2023-08-04 03:20:59,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 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 03:20:59,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 03:20:59,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 03:20:59,669 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 256 flow. Second operand 5 states and 1167 transitions. [2023-08-04 03:20:59,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 434 flow [2023-08-04 03:20:59,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:20:59,757 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 153 flow [2023-08-04 03:20:59,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-04 03:20:59,762 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-08-04 03:20:59,762 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 153 flow [2023-08-04 03:20:59,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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 03:20:59,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:20:59,763 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:20:59,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 03:20:59,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:20:59,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:20:59,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:20:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1012918098, now seen corresponding path program 1 times [2023-08-04 03:20:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:20:59,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466048944] [2023-08-04 03:20:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:59,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:21:00,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466048944] [2023-08-04 03:21:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466048944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:21:00,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:21:00,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:21:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913854868] [2023-08-04 03:21:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:21:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:21:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:21:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:21:00,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 495 [2023-08-04 03:21:00,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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 03:21:00,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:00,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 495 [2023-08-04 03:21:00,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:13,606 INFO L124 PetriNetUnfolderBase]: 184875/213935 cut-off events. [2023-08-04 03:21:13,607 INFO L125 PetriNetUnfolderBase]: For 6197/6197 co-relation queries the response was YES. [2023-08-04 03:21:14,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433027 conditions, 213935 events. 184875/213935 cut-off events. For 6197/6197 co-relation queries the response was YES. Maximal size of possible extension queue 4115. Compared 842595 event pairs, 82029 based on Foata normal form. 1/124277 useless extension candidates. Maximal degree in co-relation 183759. Up to 211266 conditions per place. [2023-08-04 03:21:15,328 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 43 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-04 03:21:15,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 248 flow [2023-08-04 03:21:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:21:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:21:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-04 03:21:15,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707070707070707 [2023-08-04 03:21:15,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-04 03:21:15,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-04 03:21:15,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:15,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-04 03:21:15,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 03:21:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 03:21:15,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 03:21:15,339 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 153 flow. Second operand 3 states and 699 transitions. [2023-08-04 03:21:15,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 248 flow [2023-08-04 03:21:15,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 243 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 03:21:15,350 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 147 flow [2023-08-04 03:21:15,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-04 03:21:15,351 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-08-04 03:21:15,352 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 147 flow [2023-08-04 03:21:15,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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 03:21:15,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:15,354 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:15,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:21:15,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:21:15,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash 375790358, now seen corresponding path program 1 times [2023-08-04 03:21:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:15,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344847357] [2023-08-04 03:21:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:15,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:15,436 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 03:21:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344847357] [2023-08-04 03:21:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344847357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:21:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447461703] [2023-08-04 03:21:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:15,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:21:15,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:21:15,438 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 03:21:15,469 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 03:21:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:15,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:21:15,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:21:15,597 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 03:21:15,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:21:15,629 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 03:21:15,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447461703] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:21:15,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:21:15,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:21:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69041365] [2023-08-04 03:21:15,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:21:15,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:21:15,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:21:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:21:15,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-04 03:21:15,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 03:21:15,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:15,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-04 03:21:15,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:26,405 INFO L124 PetriNetUnfolderBase]: 153119/176387 cut-off events. [2023-08-04 03:21:26,405 INFO L125 PetriNetUnfolderBase]: For 4299/4299 co-relation queries the response was YES. [2023-08-04 03:21:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356251 conditions, 176387 events. 153119/176387 cut-off events. For 4299/4299 co-relation queries the response was YES. Maximal size of possible extension queue 3713. Compared 663881 event pairs, 51635 based on Foata normal form. 4/102596 useless extension candidates. Maximal degree in co-relation 183383. Up to 174178 conditions per place. [2023-08-04 03:21:27,467 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 47 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-04 03:21:27,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 264 flow [2023-08-04 03:21:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:21:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:21:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 919 transitions. [2023-08-04 03:21:27,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46414141414141413 [2023-08-04 03:21:27,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 919 transitions. [2023-08-04 03:21:27,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 919 transitions. [2023-08-04 03:21:27,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:27,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 919 transitions. [2023-08-04 03:21:27,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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 03:21:27,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 495.0) internal successors, (2475), 5 states have internal predecessors, (2475), 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 03:21:27,499 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 495.0) internal successors, (2475), 5 states have internal predecessors, (2475), 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 03:21:27,499 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 147 flow. Second operand 4 states and 919 transitions. [2023-08-04 03:21:27,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 264 flow [2023-08-04 03:21:27,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:21:27,504 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 144 flow [2023-08-04 03:21:27,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-04 03:21:27,507 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-04 03:21:27,508 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 144 flow [2023-08-04 03:21:27,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 03:21:27,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:27,509 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:27,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 03:21:27,710 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 03:21:27,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:21:27,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash 952276601, now seen corresponding path program 1 times [2023-08-04 03:21:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436117635] [2023-08-04 03:21:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:27,788 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 03:21:27,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436117635] [2023-08-04 03:21:27,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436117635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:21:27,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815054007] [2023-08-04 03:21:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:27,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:21:27,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:21:27,790 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 03:21:27,793 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 03:21:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:27,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:21:27,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:21:27,880 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 03:21:27,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:21:27,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815054007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:21:27,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:21:27,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:21:27,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768761409] [2023-08-04 03:21:27,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:21:27,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:21:27,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:27,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:21:27,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:21:27,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-04 03:21:27,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 03:21:27,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:27,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-04 03:21:27,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:36,733 INFO L124 PetriNetUnfolderBase]: 145219/169496 cut-off events. [2023-08-04 03:21:36,733 INFO L125 PetriNetUnfolderBase]: For 3699/3699 co-relation queries the response was YES. [2023-08-04 03:21:37,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340974 conditions, 169496 events. 145219/169496 cut-off events. For 3699/3699 co-relation queries the response was YES. Maximal size of possible extension queue 3730. Compared 695269 event pairs, 22706 based on Foata normal form. 0/99784 useless extension candidates. Maximal degree in co-relation 92755. Up to 163248 conditions per place. [2023-08-04 03:21:38,063 INFO L140 encePairwiseOnDemand]: 491/495 looper letters, 66 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2023-08-04 03:21:38,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 344 flow [2023-08-04 03:21:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:21:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:21:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1156 transitions. [2023-08-04 03:21:38,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670707070707071 [2023-08-04 03:21:38,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1156 transitions. [2023-08-04 03:21:38,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1156 transitions. [2023-08-04 03:21:38,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:38,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1156 transitions. [2023-08-04 03:21:38,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.2) internal successors, (1156), 5 states have internal predecessors, (1156), 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 03:21:38,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 03:21:38,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 03:21:38,076 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 144 flow. Second operand 5 states and 1156 transitions. [2023-08-04 03:21:38,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 344 flow [2023-08-04 03:21:38,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 03:21:38,081 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 156 flow [2023-08-04 03:21:38,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=5, PETRI_FLOW=156, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-04 03:21:38,081 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-04 03:21:38,081 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 156 flow [2023-08-04 03:21:38,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 03:21:38,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:38,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:38,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 03:21:38,287 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 03:21:38,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:21:38,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash -657387677, now seen corresponding path program 1 times [2023-08-04 03:21:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:38,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734586189] [2023-08-04 03:21:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:38,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 03:21:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734586189] [2023-08-04 03:21:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734586189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:21:38,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:21:38,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:21:38,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626641115] [2023-08-04 03:21:38,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:21:38,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:21:38,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:21:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:21:38,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 495 [2023-08-04 03:21:38,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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 03:21:38,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:38,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 495 [2023-08-04 03:21:38,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:47,269 INFO L124 PetriNetUnfolderBase]: 138691/162200 cut-off events. [2023-08-04 03:21:47,269 INFO L125 PetriNetUnfolderBase]: For 4497/4497 co-relation queries the response was YES. [2023-08-04 03:21:47,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326622 conditions, 162200 events. 138691/162200 cut-off events. For 4497/4497 co-relation queries the response was YES. Maximal size of possible extension queue 3757. Compared 666168 event pairs, 62794 based on Foata normal form. 16/95943 useless extension candidates. Maximal degree in co-relation 88760. Up to 157415 conditions per place. [2023-08-04 03:21:48,287 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 50 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-04 03:21:48,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 277 flow [2023-08-04 03:21:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:21:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:21:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-04 03:21:48,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2023-08-04 03:21:48,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-04 03:21:48,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-04 03:21:48,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:48,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-04 03:21:48,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 03:21:48,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 03:21:48,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 03:21:48,296 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 156 flow. Second operand 3 states and 705 transitions. [2023-08-04 03:21:48,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 277 flow [2023-08-04 03:21:48,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:21:48,298 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 154 flow [2023-08-04 03:21:48,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-04 03:21:48,298 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-04 03:21:48,299 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 154 flow [2023-08-04 03:21:48,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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 03:21:48,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:48,299 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:21:48,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:21:48,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash -304080245, now seen corresponding path program 1 times [2023-08-04 03:21:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641099231] [2023-08-04 03:21:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:48,341 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 03:21:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641099231] [2023-08-04 03:21:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641099231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:21:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040841509] [2023-08-04 03:21:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:48,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:21:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:21:48,343 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 03:21:48,369 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 03:21:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:48,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:21:48,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:21:48,469 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 03:21:48,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:21:48,479 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 03:21:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040841509] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:21:48,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:21:48,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:21:48,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439936262] [2023-08-04 03:21:48,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:21:48,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:21:48,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:21:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:21:48,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-04 03:21:48,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 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 03:21:48,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:48,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-04 03:21:48,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:55,361 INFO L124 PetriNetUnfolderBase]: 114723/133752 cut-off events. [2023-08-04 03:21:55,361 INFO L125 PetriNetUnfolderBase]: For 3637/3637 co-relation queries the response was YES. [2023-08-04 03:21:55,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269342 conditions, 133752 events. 114723/133752 cut-off events. For 3637/3637 co-relation queries the response was YES. Maximal size of possible extension queue 3718. Compared 535641 event pairs, 39954 based on Foata normal form. 64/79319 useless extension candidates. Maximal degree in co-relation 73048. Up to 128063 conditions per place. [2023-08-04 03:21:56,175 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 60 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-04 03:21:56,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 321 flow [2023-08-04 03:21:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:21:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:21:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 931 transitions. [2023-08-04 03:21:56,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702020202020202 [2023-08-04 03:21:56,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 931 transitions. [2023-08-04 03:21:56,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 931 transitions. [2023-08-04 03:21:56,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:56,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 931 transitions. [2023-08-04 03:21:56,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 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 03:21:56,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 495.0) internal successors, (2475), 5 states have internal predecessors, (2475), 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 03:21:56,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 495.0) internal successors, (2475), 5 states have internal predecessors, (2475), 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 03:21:56,182 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 154 flow. Second operand 4 states and 931 transitions. [2023-08-04 03:21:56,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 321 flow [2023-08-04 03:21:56,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:21:56,185 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 151 flow [2023-08-04 03:21:56,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-04 03:21:56,186 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-04 03:21:56,186 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 151 flow [2023-08-04 03:21:56,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 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 03:21:56,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:56,187 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:56,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 03:21:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:21:56,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:21:56,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1652759378, now seen corresponding path program 1 times [2023-08-04 03:21:56,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:56,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829874070] [2023-08-04 03:21:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:56,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:56,453 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 03:21:56,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:56,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829874070] [2023-08-04 03:21:56,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829874070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:21:56,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984140270] [2023-08-04 03:21:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:56,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:21:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:21:56,454 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 03:21:56,457 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 03:21:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:56,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:21:56,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:21:56,570 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 03:21:56,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:21:56,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984140270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:21:56,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:21:56,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:21:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223625060] [2023-08-04 03:21:56,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:21:56,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:21:56,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:21:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:21:56,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-04 03:21:56,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 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 03:21:56,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:56,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-04 03:21:56,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:22:01,341 INFO L124 PetriNetUnfolderBase]: 79803/93728 cut-off events. [2023-08-04 03:22:01,341 INFO L125 PetriNetUnfolderBase]: For 3205/3205 co-relation queries the response was YES. [2023-08-04 03:22:01,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189438 conditions, 93728 events. 79803/93728 cut-off events. For 3205/3205 co-relation queries the response was YES. Maximal size of possible extension queue 2640. Compared 379053 event pairs, 2586 based on Foata normal form. 4096/59775 useless extension candidates. Maximal degree in co-relation 56821. Up to 41472 conditions per place. [2023-08-04 03:22:01,688 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2023-08-04 03:22:01,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 100 transitions, 429 flow [2023-08-04 03:22:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:22:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:22:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1175 transitions. [2023-08-04 03:22:01,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2023-08-04 03:22:01,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1175 transitions. [2023-08-04 03:22:01,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1175 transitions. [2023-08-04 03:22:01,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:22:01,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1175 transitions. [2023-08-04 03:22:01,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 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 03:22:01,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 03:22:01,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 03:22:01,711 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 151 flow. Second operand 5 states and 1175 transitions. [2023-08-04 03:22:01,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 100 transitions, 429 flow [2023-08-04 03:22:01,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 422 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 03:22:01,953 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-04 03:22:01,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-04 03:22:01,953 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-04 03:22:01,954 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-04 03:22:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 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 03:22:01,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:22:01,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:22:01,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:22:01,962 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 03:22:02,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:22:02,159 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:22:02,160 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 03:22:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 630 flow [2023-08-04 03:22:02,691 INFO L124 PetriNetUnfolderBase]: 912/4237 cut-off events. [2023-08-04 03:22:02,691 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:22:02,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 4237 events. 912/4237 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33987 event pairs, 22 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-08-04 03:22:02,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 270 transitions, 630 flow [2023-08-04 03:22:02,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 270 transitions, 630 flow [2023-08-04 03:22:02,716 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:22:02,716 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 270 transitions, 630 flow [2023-08-04 03:22:02,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 270 transitions, 630 flow [2023-08-04 03:22:02,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 630 flow [2023-08-04 03:22:03,066 INFO L124 PetriNetUnfolderBase]: 912/4237 cut-off events. [2023-08-04 03:22:03,066 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:22:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 4237 events. 912/4237 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33987 event pairs, 22 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-08-04 03:22:03,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 16856 [2023-08-04 03:22:07,521 INFO L134 LiptonReduction]: Checked pairs total: 41803 [2023-08-04 03:22:07,521 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-08-04 03:22:07,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:22:07,523 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;@25fc5a90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:22:07,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:22:07,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:22:07,526 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-08-04 03:22:07,526 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:22:07,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:22:07,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:22:07,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:22:07,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:22:07,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1418892958, now seen corresponding path program 1 times [2023-08-04 03:22:07,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:22:07,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478720489] [2023-08-04 03:22:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:22:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:22:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:22:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:22:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:22:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478720489] [2023-08-04 03:22:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478720489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:22:07,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:22:07,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:22:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733564818] [2023-08-04 03:22:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:22:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:22:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:22:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:22:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:22:07,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 494 [2023-08-04 03:22:07,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 03:22:07,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:22:07,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 494 [2023-08-04 03:22:07,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:23:33,722 INFO L124 PetriNetUnfolderBase]: 1192534/1394738 cut-off events. [2023-08-04 03:23:33,723 INFO L125 PetriNetUnfolderBase]: For 122383/122383 co-relation queries the response was YES. [2023-08-04 03:23:37,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821708 conditions, 1394738 events. 1192534/1394738 cut-off events. For 122383/122383 co-relation queries the response was YES. Maximal size of possible extension queue 25592. Compared 6890093 event pairs, 534271 based on Foata normal form. 0/798455 useless extension candidates. Maximal degree in co-relation 1015378. Up to 1362927 conditions per place. [2023-08-04 03:23:43,193 INFO L140 encePairwiseOnDemand]: 490/494 looper letters, 70 selfloop transitions, 2 changer transitions 3/87 dead transitions. [2023-08-04 03:23:43,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 408 flow [2023-08-04 03:23:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:23:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:23:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-04 03:23:43,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2023-08-04 03:23:43,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-04 03:23:43,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-04 03:23:43,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:23:43,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-04 03:23:43,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 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 03:23:43,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:23:43,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:23:43,223 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 256 flow. Second operand 3 states and 728 transitions. [2023-08-04 03:23:43,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 408 flow [2023-08-04 03:23:43,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:23:43,356 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 248 flow [2023-08-04 03:23:43,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2023-08-04 03:23:43,366 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-04 03:23:43,366 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 248 flow [2023-08-04 03:23:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 03:23:43,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:23:43,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:23:43,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 03:23:43,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:23:43,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:23:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash 867346439, now seen corresponding path program 1 times [2023-08-04 03:23:43,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:23:43,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135928067] [2023-08-04 03:23:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:23:43,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:23:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:23:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:23:43,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:23:43,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135928067] [2023-08-04 03:23:43,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135928067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:23:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175851161] [2023-08-04 03:23:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:23:43,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:23:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:23:43,458 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 03:23:43,475 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 03:23:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:23:43,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:23:43,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:23:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:23:43,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:23:43,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175851161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:23:43,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:23:43,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:23:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057813615] [2023-08-04 03:23:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:23:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:23:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:23:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:23:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:23:43,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 494 [2023-08-04 03:23:43,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 03:23:43,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:23:43,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 494 [2023-08-04 03:23:43,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:25:07,279 INFO L124 PetriNetUnfolderBase]: 1177174/1375572 cut-off events. [2023-08-04 03:25:07,279 INFO L125 PetriNetUnfolderBase]: For 115797/115797 co-relation queries the response was YES. [2023-08-04 03:25:12,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783160 conditions, 1375572 events. 1177174/1375572 cut-off events. For 115797/115797 co-relation queries the response was YES. Maximal size of possible extension queue 25684. Compared 6734203 event pairs, 528586 based on Foata normal form. 0/787421 useless extension candidates. Maximal degree in co-relation 2783114. Up to 1345051 conditions per place. [2023-08-04 03:25:17,640 INFO L140 encePairwiseOnDemand]: 491/494 looper letters, 77 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-08-04 03:25:17,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 428 flow [2023-08-04 03:25:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:25:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:25:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-08-04 03:25:17,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49460188933873145 [2023-08-04 03:25:17,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-08-04 03:25:17,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-08-04 03:25:17,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:25:17,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-08-04 03:25:17,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:25:17,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:25:17,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:25:17,665 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 248 flow. Second operand 3 states and 733 transitions. [2023-08-04 03:25:17,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 428 flow [2023-08-04 03:25:18,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 414 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 03:25:18,005 INFO L231 Difference]: Finished difference. Result has 66 places, 81 transitions, 246 flow [2023-08-04 03:25:18,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=66, PETRI_TRANSITIONS=81} [2023-08-04 03:25:18,006 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-04 03:25:18,006 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 81 transitions, 246 flow [2023-08-04 03:25:18,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 03:25:18,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:25:18,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:25:18,018 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 03:25:18,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:25:18,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:25:18,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:25:18,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1411184756, now seen corresponding path program 1 times [2023-08-04 03:25:18,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:25:18,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796259278] [2023-08-04 03:25:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:25:18,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:25:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:25:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:25:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:25:18,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796259278] [2023-08-04 03:25:18,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796259278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:25:18,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216171465] [2023-08-04 03:25:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:25:18,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:25:18,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:25:18,313 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 03:25:18,341 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 03:25:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:25:18,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:25:18,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:25:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:25:18,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:25:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216171465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:25:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:25:18,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:25:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504436064] [2023-08-04 03:25:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:25:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:25:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:25:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:25:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:25:18,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 494 [2023-08-04 03:25:18,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 81 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 03:25:18,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:25:18,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 494 [2023-08-04 03:25:18,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:26:40,201 INFO L124 PetriNetUnfolderBase]: 1174900/1381646 cut-off events. [2023-08-04 03:26:40,201 INFO L125 PetriNetUnfolderBase]: For 49745/49745 co-relation queries the response was YES. [2023-08-04 03:26:44,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785830 conditions, 1381646 events. 1174900/1381646 cut-off events. For 49745/49745 co-relation queries the response was YES. Maximal size of possible extension queue 27255. Compared 7156589 event pairs, 524340 based on Foata normal form. 0/795247 useless extension candidates. Maximal degree in co-relation 814825. Up to 1331074 conditions per place. [2023-08-04 03:26:50,566 INFO L140 encePairwiseOnDemand]: 491/494 looper letters, 85 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-04 03:26:50,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 456 flow [2023-08-04 03:26:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:26:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:26:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-04 03:26:50,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993252361673414 [2023-08-04 03:26:50,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-04 03:26:50,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-04 03:26:50,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:26:50,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-04 03:26:50,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 03:26:50,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:26:50,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:26:50,571 INFO L175 Difference]: Start difference. First operand has 66 places, 81 transitions, 246 flow. Second operand 3 states and 740 transitions. [2023-08-04 03:26:50,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 456 flow [2023-08-04 03:26:50,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:26:50,601 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 256 flow [2023-08-04 03:26:50,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2023-08-04 03:26:50,602 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-04 03:26:50,602 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 256 flow [2023-08-04 03:26:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 03:26:50,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:26:50,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:26:50,619 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 03:26:50,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:26:50,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:26:50,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:26:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1059845649, now seen corresponding path program 1 times [2023-08-04 03:26:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:26:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786312645] [2023-08-04 03:26:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:26:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:26:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:26:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786312645] [2023-08-04 03:26:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786312645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:26:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994112740] [2023-08-04 03:26:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:50,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:26:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:26:50,933 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 03:26:50,985 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 03:26:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:51,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:26:51,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:26:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:26:51,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:26:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994112740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:26:51,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:26:51,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:26:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138298352] [2023-08-04 03:26:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:26:51,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:26:51,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:26:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:26:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:26:51,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 494 [2023-08-04 03:26:51,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 03:26:51,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:26:51,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 494 [2023-08-04 03:26:51,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:27:57,105 INFO L124 PetriNetUnfolderBase]: 977076/1153854 cut-off events. [2023-08-04 03:27:57,106 INFO L125 PetriNetUnfolderBase]: For 44687/44687 co-relation queries the response was YES. [2023-08-04 03:28:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347631 conditions, 1153854 events. 977076/1153854 cut-off events. For 44687/44687 co-relation queries the response was YES. Maximal size of possible extension queue 21445. Compared 5978133 event pairs, 397551 based on Foata normal form. 0/675359 useless extension candidates. Maximal degree in co-relation 743266. Up to 911106 conditions per place. [2023-08-04 03:28:05,109 INFO L140 encePairwiseOnDemand]: 491/494 looper letters, 96 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-08-04 03:28:05,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 110 transitions, 523 flow [2023-08-04 03:28:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:28:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:28:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2023-08-04 03:28:05,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060728744939271 [2023-08-04 03:28:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2023-08-04 03:28:05,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2023-08-04 03:28:05,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:28:05,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2023-08-04 03:28:05,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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 03:28:05,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:28:05,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 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 03:28:05,114 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 256 flow. Second operand 3 states and 750 transitions. [2023-08-04 03:28:05,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 110 transitions, 523 flow [2023-08-04 03:28:05,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:28:05,145 INFO L231 Difference]: Finished difference. Result has 70 places, 83 transitions, 266 flow [2023-08-04 03:28:05,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=70, PETRI_TRANSITIONS=83} [2023-08-04 03:28:05,146 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-04 03:28:05,146 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 83 transitions, 266 flow [2023-08-04 03:28:05,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 03:28:05,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:28:05,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:28:05,152 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 03:28:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 03:28:05,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:28:05,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:28:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1256090260, now seen corresponding path program 1 times [2023-08-04 03:28:05,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:28:05,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782705845] [2023-08-04 03:28:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:28:05,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:28:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:28:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:28:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:28:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782705845] [2023-08-04 03:28:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782705845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:28:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575694546] [2023-08-04 03:28:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:28:05,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:28:05,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:28:05,422 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 03:28:05,427 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 03:28:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:28:05,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:28:05,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:28:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 03:28:05,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:28:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575694546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:28:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:28:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:28:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638071332] [2023-08-04 03:28:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:28:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:28:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:28:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:28:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:28:05,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 494 [2023-08-04 03:28:05,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 03:28:05,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:28:05,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 494 [2023-08-04 03:28:05,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 03:29:01,106 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 03:29:01,116 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 03:29:02,132 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 03:29:02,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-08-04 03:29:04,635 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:29:04,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 03:29:04,635 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 03:29:04,636 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 03:29:04,636 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 03:29:04,637 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:29:04,637 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:29:04,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:29:04 BasicIcfg [2023-08-04 03:29:04,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:29:04,640 INFO L158 Benchmark]: Toolchain (without parser) took 587028.77ms. Allocated memory was 371.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 324.6MB in the beginning and 9.9GB in the end (delta: -9.6GB). Peak memory consumption was 8.1GB. Max. memory is 16.0GB. [2023-08-04 03:29:04,640 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 308.3MB. Free memory is still 264.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:29:04,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.40ms. Allocated memory is still 371.2MB. Free memory was 324.6MB in the beginning and 313.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 03:29:04,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.73ms. Allocated memory is still 371.2MB. Free memory was 313.2MB in the beginning and 311.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:29:04,640 INFO L158 Benchmark]: Boogie Preprocessor took 26.06ms. Allocated memory is still 371.2MB. Free memory was 311.1MB in the beginning and 309.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:29:04,640 INFO L158 Benchmark]: RCFGBuilder took 434.05ms. Allocated memory is still 371.2MB. Free memory was 309.0MB in the beginning and 286.8MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 03:29:04,641 INFO L158 Benchmark]: TraceAbstraction took 586317.23ms. Allocated memory was 371.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 286.8MB in the beginning and 9.9GB in the end (delta: -9.6GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. [2023-08-04 03:29:04,641 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 308.3MB. Free memory is still 264.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.40ms. Allocated memory is still 371.2MB. Free memory was 324.6MB in the beginning and 313.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.73ms. Allocated memory is still 371.2MB. Free memory was 313.2MB in the beginning and 311.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.06ms. Allocated memory is still 371.2MB. Free memory was 311.1MB in the beginning and 309.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 434.05ms. Allocated memory is still 371.2MB. Free memory was 309.0MB in the beginning and 286.8MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 586317.23ms. Allocated memory was 371.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 286.8MB in the beginning and 9.9GB in the end (delta: -9.6GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 198 PlacesBefore, 47 PlacesAfterwards, 222 TransitionsBefore, 55 TransitionsAfterwards, 6378 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 19 ConcurrentYvCompositions, 16 ChoiceCompositions, 195 TotalNumberOfCompositions, 12584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10093, independent: 9933, independent conditional: 0, independent unconditional: 9933, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3371, independent: 3342, independent conditional: 0, independent unconditional: 3342, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10093, independent: 6591, independent conditional: 0, independent unconditional: 6591, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 3371, unknown conditional: 0, unknown unconditional: 3371] , Statistics on independence cache: Total cache size (in pairs): 294, Positive cache size: 282, Positive conditional cache size: 0, Positive unconditional cache size: 282, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 236 PlacesBefore, 68 PlacesAfterwards, 270 TransitionsBefore, 83 TransitionsAfterwards, 16856 CoEnabledTransitionPairs, 8 FixpointIterations, 78 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 26 ConcurrentYvCompositions, 19 ChoiceCompositions, 225 TotalNumberOfCompositions, 44920 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36322, independent: 35996, independent conditional: 0, independent unconditional: 35996, dependent: 326, dependent conditional: 0, dependent unconditional: 326, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8720, independent: 8682, independent conditional: 0, independent unconditional: 8682, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36322, independent: 27314, independent conditional: 0, independent unconditional: 27314, dependent: 288, dependent conditional: 0, dependent unconditional: 288, unknown: 8720, unknown conditional: 0, unknown unconditional: 8720] , Statistics on independence cache: Total cache size (in pairs): 882, Positive cache size: 865, Positive conditional cache size: 0, Positive unconditional cache size: 865, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 236 PlacesBefore, 68 PlacesAfterwards, 270 TransitionsBefore, 83 TransitionsAfterwards, 16856 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 26 ConcurrentYvCompositions, 19 ChoiceCompositions, 224 TotalNumberOfCompositions, 41803 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32562, independent: 32271, independent conditional: 0, independent unconditional: 32271, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8803, independent: 8759, independent conditional: 0, independent unconditional: 8759, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 32562, independent: 23512, independent conditional: 0, independent unconditional: 23512, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 8803, unknown conditional: 0, unknown unconditional: 8803] , Statistics on independence cache: Total cache size (in pairs): 976, Positive cache size: 955, Positive conditional cache size: 0, Positive unconditional cache size: 955, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 224 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 256 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 158.3s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 150.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 428 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 981 IncrementalHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 16 mSDtfsCounter, 981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1043 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 157/178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 10 procedures, 256 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 422.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 415.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 763 IncrementalHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 11 mSDtfsCounter, 763 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 781 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 16/20 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