/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-sum.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:02:05,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:02:05,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:02:05,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:02:05,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:02:05,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:02:05,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:02:05,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:02:05,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:02:05,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:02:05,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:02:05,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:02:05,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:02:05,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:02:05,399 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:02:05,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:02:05,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:02:05,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:02:05,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:02:05,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:02:05,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:02:05,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:02:05,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:02:05,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:02:05,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:02:05,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:02:05,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:02:05,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:02:05,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:02:05,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:02:05,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:02:05,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:02:05,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:02:05,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:02:05,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:02:05,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:02:05,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:02:05,406 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:02:05,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:02:05,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:02:05,407 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:02:05,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 21:02:05,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:02:05,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:02:05,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:02:05,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:02:05,634 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:02:05,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-sum.wvr_bound2.c [2023-08-03 21:02:06,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:02:06,951 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:02:06,952 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-sum.wvr_bound2.c [2023-08-03 21:02:06,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8718f39a0/72746d4112c141528fd528e8b5fec466/FLAGe67438835 [2023-08-03 21:02:06,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8718f39a0/72746d4112c141528fd528e8b5fec466 [2023-08-03 21:02:06,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:02:06,982 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:02:06,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:02:06,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:02:06,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:02:06,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:02:06" (1/1) ... [2023-08-03 21:02:06,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7275ecd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:06, skipping insertion in model container [2023-08-03 21:02:06,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:02:06" (1/1) ... [2023-08-03 21:02:07,017 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:02:07,154 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-three-array-sum.wvr_bound2.c[2934,2947] [2023-08-03 21:02:07,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:02:07,166 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:02:07,188 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-three-array-sum.wvr_bound2.c[2934,2947] [2023-08-03 21:02:07,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:02:07,199 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:02:07,200 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:02:07,205 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:02:07,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07 WrapperNode [2023-08-03 21:02:07,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:02:07,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:02:07,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:02:07,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:02:07,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,246 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 202 [2023-08-03 21:02:07,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:02:07,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:02:07,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:02:07,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:02:07,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:02:07,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:02:07,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:02:07,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:02:07,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (1/1) ... [2023-08-03 21:02:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:02:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:02:07,313 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) [2023-08-03 21:02:07,333 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 [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 21:02:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 21:02:07,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 21:02:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 21:02:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 21:02:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:02:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 21:02:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 21:02:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:02:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:02:07,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:02:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:02:07,352 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:02:07,437 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:02:07,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:02:07,731 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:02:07,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:02:07,761 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 21:02:07,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:02:07 BoogieIcfgContainer [2023-08-03 21:02:07,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:02:07,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:02:07,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:02:07,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:02:07,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:02:06" (1/3) ... [2023-08-03 21:02:07,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d409f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:02:07, skipping insertion in model container [2023-08-03 21:02:07,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:02:07" (2/3) ... [2023-08-03 21:02:07,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d409f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:02:07, skipping insertion in model container [2023-08-03 21:02:07,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:02:07" (3/3) ... [2023-08-03 21:02:07,770 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-three-array-sum.wvr_bound2.c [2023-08-03 21:02:07,777 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:02:07,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:02:07,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:02:07,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:02:07,913 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 21:02:07,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 260 transitions, 562 flow [2023-08-03 21:02:08,131 INFO L124 PetriNetUnfolderBase]: 112/737 cut-off events. [2023-08-03 21:02:08,132 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 21:02:08,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 737 events. 112/737 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3408 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 450. Up to 16 conditions per place. [2023-08-03 21:02:08,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 260 transitions, 562 flow [2023-08-03 21:02:08,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 260 transitions, 562 flow [2023-08-03 21:02:08,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:02:08,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 260 transitions, 562 flow [2023-08-03 21:02:08,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 260 transitions, 562 flow [2023-08-03 21:02:08,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 260 transitions, 562 flow [2023-08-03 21:02:08,281 INFO L124 PetriNetUnfolderBase]: 112/737 cut-off events. [2023-08-03 21:02:08,282 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 21:02:08,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 737 events. 112/737 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3408 event pairs, 0 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 450. Up to 16 conditions per place. [2023-08-03 21:02:08,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 6858 [2023-08-03 21:02:14,637 INFO L134 LiptonReduction]: Checked pairs total: 14005 [2023-08-03 21:02:14,637 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-03 21:02:14,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:02:14,654 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;@7683695d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:02:14,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 21:02:14,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:02:14,662 INFO L124 PetriNetUnfolderBase]: 5/38 cut-off events. [2023-08-03 21:02:14,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:02:14,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:02:14,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:02:14,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:02:14,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:02:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash -984473471, now seen corresponding path program 1 times [2023-08-03 21:02:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:02:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987591045] [2023-08-03 21:02:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:02:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:02:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:02:14,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:02:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:02:14,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:02:14,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:02:14,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 21:02:14,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 21:02:14,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 21:02:14,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 21:02:14,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:02:14,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:02:14,893 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:02:14,893 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:02:14,948 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 21:02:14,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 310 transitions, 710 flow [2023-08-03 21:02:15,619 INFO L124 PetriNetUnfolderBase]: 916/4273 cut-off events. [2023-08-03 21:02:15,619 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 21:02:15,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 4273 events. 916/4273 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 33845 event pairs, 11 based on Foata normal form. 0/3601 useless extension candidates. Maximal degree in co-relation 2572. Up to 192 conditions per place. [2023-08-03 21:02:15,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 310 transitions, 710 flow [2023-08-03 21:02:15,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 310 transitions, 710 flow [2023-08-03 21:02:15,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:02:15,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 310 transitions, 710 flow [2023-08-03 21:02:15,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 310 transitions, 710 flow [2023-08-03 21:02:15,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 310 transitions, 710 flow [2023-08-03 21:02:16,231 INFO L124 PetriNetUnfolderBase]: 916/4273 cut-off events. [2023-08-03 21:02:16,232 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 21:02:16,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 4273 events. 916/4273 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 33845 event pairs, 11 based on Foata normal form. 0/3601 useless extension candidates. Maximal degree in co-relation 2572. Up to 192 conditions per place. [2023-08-03 21:02:16,346 INFO L119 LiptonReduction]: Number of co-enabled transitions 18208 [2023-08-03 21:02:22,597 INFO L134 LiptonReduction]: Checked pairs total: 48305 [2023-08-03 21:02:22,597 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-08-03 21:02:22,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:02:22,600 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;@7683695d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:02:22,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 21:02:22,604 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:02:22,604 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-08-03 21:02:22,604 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:02:22,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:02:22,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:02:22,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:02:22,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:02:22,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1550090801, now seen corresponding path program 1 times [2023-08-03 21:02:22,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:02:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023637049] [2023-08-03 21:02:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:02:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:02:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:02:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:02:22,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:02:22,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023637049] [2023-08-03 21:02:22,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023637049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:02:22,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:02:22,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:02:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768641451] [2023-08-03 21:02:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:02:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:02:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:02:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:02:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:02:22,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 578 [2023-08-03 21:02:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 87 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2023-08-03 21:02:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:02:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 578 [2023-08-03 21:02:22,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:03:41,994 INFO L124 PetriNetUnfolderBase]: 1102897/1292530 cut-off events. [2023-08-03 21:03:41,995 INFO L125 PetriNetUnfolderBase]: For 107695/107695 co-relation queries the response was YES. [2023-08-03 21:03:45,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613952 conditions, 1292530 events. 1102897/1292530 cut-off events. For 107695/107695 co-relation queries the response was YES. Maximal size of possible extension queue 22471. Compared 6347123 event pairs, 467273 based on Foata normal form. 0/731499 useless extension candidates. Maximal degree in co-relation 807095. Up to 1260453 conditions per place. [2023-08-03 21:03:52,851 INFO L140 encePairwiseOnDemand]: 574/578 looper letters, 73 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-03 21:03:52,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 424 flow [2023-08-03 21:03:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:03:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:03:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2023-08-03 21:03:52,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855824682814302 [2023-08-03 21:03:52,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2023-08-03 21:03:52,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2023-08-03 21:03:52,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:03:52,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2023-08-03 21:03:52,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:52,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-03 21:03:52,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-03 21:03:52,926 INFO L175 Difference]: Start difference. First operand has 71 places, 87 transitions, 264 flow. Second operand 3 states and 842 transitions. [2023-08-03 21:03:52,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 424 flow [2023-08-03 21:03:53,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:03:53,258 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 274 flow [2023-08-03 21:03:53,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2023-08-03 21:03:53,263 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-08-03 21:03:53,263 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 274 flow [2023-08-03 21:03:53,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2023-08-03 21:03:53,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:03:53,264 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:03:53,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:03:53,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:03:53,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:03:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1114849615, now seen corresponding path program 1 times [2023-08-03 21:03:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:03:53,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758587532] [2023-08-03 21:03:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:03:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:03:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:03:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758587532] [2023-08-03 21:03:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758587532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:03:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312311017] [2023-08-03 21:03:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:53,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:03:53,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:03:53,513 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) [2023-08-03 21:03:53,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:03:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:53,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:03:53,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:03:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:03:53,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:03:53,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312311017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:03:53,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:03:53,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:03:53,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061687198] [2023-08-03 21:03:53,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:03:53,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:03:53,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:03:53,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:03:53,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:03:53,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 578 [2023-08-03 21:03:53,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 256.2) internal successors, (1281), 5 states have internal predecessors, (1281), 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) [2023-08-03 21:03:53,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:03:53,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 578 [2023-08-03 21:03:53,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:05:20,885 INFO L124 PetriNetUnfolderBase]: 1102759/1291937 cut-off events. [2023-08-03 21:05:20,885 INFO L125 PetriNetUnfolderBase]: For 108190/108190 co-relation queries the response was YES. [2023-08-03 21:05:25,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613200 conditions, 1291937 events. 1102759/1291937 cut-off events. For 108190/108190 co-relation queries the response was YES. Maximal size of possible extension queue 22471. Compared 6324318 event pairs, 358483 based on Foata normal form. 25/731093 useless extension candidates. Maximal degree in co-relation 929371. Up to 1260183 conditions per place. [2023-08-03 21:05:31,569 INFO L140 encePairwiseOnDemand]: 574/578 looper letters, 80 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-08-03 21:05:31,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 100 transitions, 466 flow [2023-08-03 21:05:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:05:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:05:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1355 transitions. [2023-08-03 21:05:31,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688581314878893 [2023-08-03 21:05:31,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1355 transitions. [2023-08-03 21:05:31,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1355 transitions. [2023-08-03 21:05:31,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:05:31,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1355 transitions. [2023-08-03 21:05:31,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 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) [2023-08-03 21:05:31,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 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) [2023-08-03 21:05:31,584 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 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) [2023-08-03 21:05:31,584 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 274 flow. Second operand 5 states and 1355 transitions. [2023-08-03 21:05:31,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 100 transitions, 466 flow [2023-08-03 21:05:31,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 100 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:05:31,674 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 279 flow [2023-08-03 21:05:31,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-08-03 21:05:31,676 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2023-08-03 21:05:31,676 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 279 flow [2023-08-03 21:05:31,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 256.2) internal successors, (1281), 5 states have internal predecessors, (1281), 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) [2023-08-03 21:05:31,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:05:31,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:05:31,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:05:31,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:05:31,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:05:31,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:05:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash -195067193, now seen corresponding path program 1 times [2023-08-03 21:05:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:05:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980727420] [2023-08-03 21:05:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:05:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:05:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:05:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980727420] [2023-08-03 21:05:32,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980727420] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:05:32,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:05:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:05:32,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313424351] [2023-08-03 21:05:32,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:05:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:05:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:05:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:05:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:05:32,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 578 [2023-08-03 21:05:32,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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) [2023-08-03 21:05:32,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:05:32,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 578 [2023-08-03 21:05:32,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:06:57,756 INFO L124 PetriNetUnfolderBase]: 1086483/1271138 cut-off events. [2023-08-03 21:06:57,757 INFO L125 PetriNetUnfolderBase]: For 94929/94929 co-relation queries the response was YES. [2023-08-03 21:07:01,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567279 conditions, 1271138 events. 1086483/1271138 cut-off events. For 94929/94929 co-relation queries the response was YES. Maximal size of possible extension queue 23243. Compared 6236400 event pairs, 500482 based on Foata normal form. 0/718859 useless extension candidates. Maximal degree in co-relation 643502. Up to 1241054 conditions per place. [2023-08-03 21:07:07,312 INFO L140 encePairwiseOnDemand]: 575/578 looper letters, 80 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2023-08-03 21:07:07,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 469 flow [2023-08-03 21:07:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:07:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:07:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2023-08-03 21:07:07,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884659746251442 [2023-08-03 21:07:07,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2023-08-03 21:07:07,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2023-08-03 21:07:07,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:07:07,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2023-08-03 21:07:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-08-03 21:07:07,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-03 21:07:07,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-03 21:07:07,322 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 279 flow. Second operand 3 states and 847 transitions. [2023-08-03 21:07:07,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 469 flow [2023-08-03 21:07:07,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 462 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:07:07,334 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 287 flow [2023-08-03 21:07:07,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-08-03 21:07:07,336 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2023-08-03 21:07:07,336 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 287 flow [2023-08-03 21:07:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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) [2023-08-03 21:07:07,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:07:07,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:07:07,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:07:07,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:07:07,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:07:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2034388089, now seen corresponding path program 1 times [2023-08-03 21:07:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:07:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39822055] [2023-08-03 21:07:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:07:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:07:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:07:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:07:07,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:07:07,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39822055] [2023-08-03 21:07:07,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39822055] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:07:07,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307687524] [2023-08-03 21:07:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:07:07,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:07:07,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:07:07,437 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) [2023-08-03 21:07:07,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:07:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:07:07,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:07:07,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:07:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:07:07,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:07:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307687524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:07:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:07:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 21:07:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451617786] [2023-08-03 21:07:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:07:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:07:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:07:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:07:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:07:07,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 578 [2023-08-03 21:07:07,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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) [2023-08-03 21:07:07,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:07:07,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 578 [2023-08-03 21:07:07,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:08:35,468 INFO L124 PetriNetUnfolderBase]: 1084814/1277434 cut-off events. [2023-08-03 21:08:35,468 INFO L125 PetriNetUnfolderBase]: For 79792/79792 co-relation queries the response was YES. [2023-08-03 21:08:40,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572421 conditions, 1277434 events. 1084814/1277434 cut-off events. For 79792/79792 co-relation queries the response was YES. Maximal size of possible extension queue 24619. Compared 6582484 event pairs, 473633 based on Foata normal form. 0/726557 useless extension candidates. Maximal degree in co-relation 646451. Up to 1228949 conditions per place. [2023-08-03 21:08:46,671 INFO L140 encePairwiseOnDemand]: 575/578 looper letters, 88 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-03 21:08:46,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 503 flow [2023-08-03 21:08:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:08:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:08:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-08-03 21:08:46,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49192618223760093 [2023-08-03 21:08:46,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-08-03 21:08:46,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-08-03 21:08:46,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:08:46,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-08-03 21:08:46,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 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) [2023-08-03 21:08:46,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-03 21:08:46,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-03 21:08:46,704 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 287 flow. Second operand 3 states and 853 transitions. [2023-08-03 21:08:46,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 503 flow [2023-08-03 21:08:46,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 106 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:08:46,729 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 296 flow [2023-08-03 21:08:46,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2023-08-03 21:08:46,731 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 7 predicate places. [2023-08-03 21:08:46,731 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 296 flow [2023-08-03 21:08:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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) [2023-08-03 21:08:46,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:08:46,732 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:08:46,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 21:08:46,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:08:46,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:08:46,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:08:46,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1980344073, now seen corresponding path program 1 times [2023-08-03 21:08:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:08:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043923016] [2023-08-03 21:08:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:08:46,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:08:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:08:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:08:47,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:08:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043923016] [2023-08-03 21:08:47,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043923016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:08:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921670655] [2023-08-03 21:08:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:08:47,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:08:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:08:47,082 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) [2023-08-03 21:08:47,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 21:08:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:08:47,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:08:47,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:08:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:08:47,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:08:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:08:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921670655] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:08:47,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:08:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:08:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374664187] [2023-08-03 21:08:47,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:08:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:08:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:08:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:08:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:08:47,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 578 [2023-08-03 21:08:47,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 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) [2023-08-03 21:08:47,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:08:47,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 578 [2023-08-03 21:08:47,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:10,562 INFO L124 PetriNetUnfolderBase]: 1063023/1250975 cut-off events. [2023-08-03 21:10:10,563 INFO L125 PetriNetUnfolderBase]: For 76468/76468 co-relation queries the response was YES. [2023-08-03 21:10:15,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2531133 conditions, 1250975 events. 1063023/1250975 cut-off events. For 76468/76468 co-relation queries the response was YES. Maximal size of possible extension queue 25140. Compared 6447730 event pairs, 348557 based on Foata normal form. 5/717964 useless extension candidates. Maximal degree in co-relation 894072. Up to 1214312 conditions per place. [2023-08-03 21:10:21,253 INFO L140 encePairwiseOnDemand]: 575/578 looper letters, 82 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-03 21:10:21,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 486 flow [2023-08-03 21:10:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:10:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:10:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1100 transitions. [2023-08-03 21:10:21,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757785467128028 [2023-08-03 21:10:21,281 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1100 transitions. [2023-08-03 21:10:21,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1100 transitions. [2023-08-03 21:10:21,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:21,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1100 transitions. [2023-08-03 21:10:21,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.0) internal successors, (1100), 4 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) [2023-08-03 21:10:21,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 578.0) internal successors, (2890), 5 states have internal predecessors, (2890), 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) [2023-08-03 21:10:21,289 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 578.0) internal successors, (2890), 5 states have internal predecessors, (2890), 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) [2023-08-03 21:10:21,289 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 296 flow. Second operand 4 states and 1100 transitions. [2023-08-03 21:10:21,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 486 flow [2023-08-03 21:10:21,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 101 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:10:21,341 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 292 flow [2023-08-03 21:10:21,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2023-08-03 21:10:21,344 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2023-08-03 21:10:21,344 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 292 flow [2023-08-03 21:10:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 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) [2023-08-03 21:10:21,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:21,345 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:21,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 21:10:21,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:21,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:10:21,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2072365922, now seen corresponding path program 1 times [2023-08-03 21:10:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281394977] [2023-08-03 21:10:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:10:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281394977] [2023-08-03 21:10:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281394977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042200641] [2023-08-03 21:10:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:21,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:21,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:21,702 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) [2023-08-03 21:10:21,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 21:10:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:21,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:10:21,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:10:21,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:10:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042200641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:10:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:10:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379876507] [2023-08-03 21:10:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:10:21,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 578 [2023-08-03 21:10:21,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 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) [2023-08-03 21:10:21,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:21,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 578 [2023-08-03 21:10:21,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 21:11:00,091 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 [2023-08-03 21:11:00,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:11:01,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 21:11:01,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 21:11:01,798 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 21:11:01,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:11:01,799 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 21:11:01,799 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 21:11:01,799 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 21:11:01,799 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 21:11:01,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 21:11:01,801 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:11:01,801 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:11:01,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:11:01 BasicIcfg [2023-08-03 21:11:01,803 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:11:01,804 INFO L158 Benchmark]: Toolchain (without parser) took 534821.71ms. Allocated memory was 520.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 473.1MB in the beginning and 12.3GB in the end (delta: -11.8GB). Peak memory consumption was 9.8GB. Max. memory is 16.0GB. [2023-08-03 21:11:01,804 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory was 321.9MB in the beginning and 321.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:11:01,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.82ms. Allocated memory is still 520.1MB. Free memory was 473.1MB in the beginning and 460.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 21:11:01,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.92ms. Allocated memory is still 520.1MB. Free memory was 460.9MB in the beginning and 458.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:11:01,805 INFO L158 Benchmark]: Boogie Preprocessor took 29.68ms. Allocated memory is still 520.1MB. Free memory was 458.8MB in the beginning and 456.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:11:01,805 INFO L158 Benchmark]: RCFGBuilder took 485.71ms. Allocated memory is still 520.1MB. Free memory was 456.7MB in the beginning and 433.2MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 21:11:01,805 INFO L158 Benchmark]: TraceAbstraction took 534038.27ms. Allocated memory was 520.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 432.2MB in the beginning and 12.3GB in the end (delta: -11.9GB). Peak memory consumption was 9.8GB. Max. memory is 16.0GB. [2023-08-03 21:11:01,806 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory was 321.9MB in the beginning and 321.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 222.82ms. Allocated memory is still 520.1MB. Free memory was 473.1MB in the beginning and 460.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.92ms. Allocated memory is still 520.1MB. Free memory was 460.9MB in the beginning and 458.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.68ms. Allocated memory is still 520.1MB. Free memory was 458.8MB in the beginning and 456.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 485.71ms. Allocated memory is still 520.1MB. Free memory was 456.7MB in the beginning and 433.2MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 534038.27ms. Allocated memory was 520.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 432.2MB in the beginning and 12.3GB in the end (delta: -11.9GB). Peak memory consumption was 9.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 232 PlacesBefore, 49 PlacesAfterwards, 260 TransitionsBefore, 58 TransitionsAfterwards, 6858 CoEnabledTransitionPairs, 7 FixpointIterations, 104 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 20 ConcurrentYvCompositions, 19 ChoiceCompositions, 240 TotalNumberOfCompositions, 14005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11092, independent: 10920, independent conditional: 0, independent unconditional: 10920, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3629, independent: 3592, independent conditional: 0, independent unconditional: 3592, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11092, independent: 7328, independent conditional: 0, independent unconditional: 7328, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 3629, unknown conditional: 0, unknown unconditional: 3629] , Statistics on independence cache: Total cache size (in pairs): 330, Positive cache size: 319, Positive conditional cache size: 0, Positive unconditional cache size: 319, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 272 PlacesBefore, 71 PlacesAfterwards, 310 TransitionsBefore, 87 TransitionsAfterwards, 18208 CoEnabledTransitionPairs, 7 FixpointIterations, 108 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 26 ConcurrentYvCompositions, 22 ChoiceCompositions, 268 TotalNumberOfCompositions, 48305 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35530, independent: 35202, independent conditional: 0, independent unconditional: 35202, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9710, independent: 9648, independent conditional: 0, independent unconditional: 9648, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 35530, independent: 25554, independent conditional: 0, independent unconditional: 25554, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 9710, unknown conditional: 0, unknown unconditional: 9710] , Statistics on independence cache: Total cache size (in pairs): 1100, Positive cache size: 1080, Positive conditional cache size: 0, Positive unconditional cache size: 1080, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 260 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: 6.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred 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, 9 NumberOfCodeBlocks, 9 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 with 2 thread instances CFG has 10 procedures, 294 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: 526.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 516.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 400 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 338 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1025 IncrementalHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 17 mSDtfsCounter, 1025 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=4, InterpolantAutomatonStates: 18, 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, 0.7s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 298 SizeOfPredicates, 0 NumberOfNonLiveVariables, 907 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 62/76 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