/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:15:43,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:15:43,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:15:43,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:15:43,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:15:43,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:15:43,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:15:43,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:15:43,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:15:43,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:15:43,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:15:43,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:15:43,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:15:43,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:15:43,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:15:43,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:15:43,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:15:43,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:15:43,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:15:43,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:15:43,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:15:43,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:15:43,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:15:43,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:15:43,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:15:43,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:15:43,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:15:43,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:15:43,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:15:43,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:15:43,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:15:43,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:15:43,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:15:43,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:15:43,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:15:43,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:15:43,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:15:43,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:15:43,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:15:43,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:15:43,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:15:43,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 21:15:43,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:15:43,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:15:43,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:15:43,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:15:43,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:15:43,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:15:43,329 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:15:43,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:15:43,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:15:43,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:15:43,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:15:43,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:15:43,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:15:43,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:15:43,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:15:43,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:15:43,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:15:43,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:15:43,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:15:43,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:15:43,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:15:43,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:15:43,334 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:15:43,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:15:43,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:15:43,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:15:43,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:15:43,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:15:43,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:15:43,587 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:15:43,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2022-09-20 21:15:43,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bc67b40/8276874eaf9a44ed926df91dcc7ee5df/FLAGa1a8c7d41 [2022-09-20 21:15:44,047 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:15:44,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2022-09-20 21:15:44,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bc67b40/8276874eaf9a44ed926df91dcc7ee5df/FLAGa1a8c7d41 [2022-09-20 21:15:44,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bc67b40/8276874eaf9a44ed926df91dcc7ee5df [2022-09-20 21:15:44,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:15:44,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:15:44,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:15:44,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:15:44,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:15:44,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5010c90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44, skipping insertion in model container [2022-09-20 21:15:44,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:15:44,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:15:44,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-09-20 21:15:44,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:15:44,706 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:15:44,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-09-20 21:15:44,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:15:44,741 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:15:44,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44 WrapperNode [2022-09-20 21:15:44,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:15:44,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:15:44,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:15:44,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:15:44,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,785 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 271 [2022-09-20 21:15:44,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:15:44,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:15:44,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:15:44,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:15:44,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:15:44,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:15:44,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:15:44,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:15:44,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (1/1) ... [2022-09-20 21:15:44,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:15:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:15:44,865 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) [2022-09-20 21:15:44,874 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 [2022-09-20 21:15:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:15:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:15:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:15:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:15:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:15:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:15:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:15:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:15:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:15:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:15:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:15:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:15:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:15:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:15:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:15:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:15:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:15:44,904 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:15:44,983 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:15:44,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:15:45,368 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:15:45,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:15:45,580 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-20 21:15:45,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:15:45 BoogieIcfgContainer [2022-09-20 21:15:45,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:15:45,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:15:45,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:15:45,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:15:45,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:15:44" (1/3) ... [2022-09-20 21:15:45,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:15:45, skipping insertion in model container [2022-09-20 21:15:45,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:15:44" (2/3) ... [2022-09-20 21:15:45,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:15:45, skipping insertion in model container [2022-09-20 21:15:45,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:15:45" (3/3) ... [2022-09-20 21:15:45,590 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2022-09-20 21:15:45,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:15:45,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:15:45,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:15:45,690 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 21:15:45,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 193 transitions, 410 flow [2022-09-20 21:15:45,858 INFO L130 PetriNetUnfolder]: 16/190 cut-off events. [2022-09-20 21:15:45,858 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:15:45,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 16/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 108 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-09-20 21:15:45,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 193 transitions, 410 flow [2022-09-20 21:15:45,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 179 transitions, 376 flow [2022-09-20 21:15:45,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:15:45,895 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=false, 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;@34a71f27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:15:45,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 21:15:45,925 INFO L130 PetriNetUnfolder]: 16/178 cut-off events. [2022-09-20 21:15:45,925 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:15:45,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:15:45,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:15:45,927 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)] === [2022-09-20 21:15:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:15:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1588214168, now seen corresponding path program 1 times [2022-09-20 21:15:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:15:45,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356592741] [2022-09-20 21:15:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:45,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:15:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:15:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:15:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356592741] [2022-09-20 21:15:46,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356592741] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:15:46,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:15:46,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:15:46,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991500021] [2022-09-20 21:15:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:15:46,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:15:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:15:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:15:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:15:46,194 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 193 [2022-09-20 21:15:46,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 179 transitions, 376 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 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) [2022-09-20 21:15:46,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:15:46,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 193 [2022-09-20 21:15:46,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:15:46,285 INFO L130 PetriNetUnfolder]: 42/301 cut-off events. [2022-09-20 21:15:46,286 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-09-20 21:15:46,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 301 events. 42/301 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 706 event pairs, 15 based on Foata normal form. 45/313 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-09-20 21:15:46,290 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 9 selfloop transitions, 0 changer transitions 6/168 dead transitions. [2022-09-20 21:15:46,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 168 transitions, 372 flow [2022-09-20 21:15:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:15:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:15:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 364 transitions. [2022-09-20 21:15:46,302 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9430051813471503 [2022-09-20 21:15:46,303 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 364 transitions. [2022-09-20 21:15:46,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 364 transitions. [2022-09-20 21:15:46,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:15:46,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 364 transitions. [2022-09-20 21:15:46,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2022-09-20 21:15:46,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2022-09-20 21:15:46,314 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2022-09-20 21:15:46,316 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 376 flow. Second operand 2 states and 364 transitions. [2022-09-20 21:15:46,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 168 transitions, 372 flow [2022-09-20 21:15:46,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 168 transitions, 360 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:15:46,323 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 330 flow [2022-09-20 21:15:46,324 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=330, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-09-20 21:15:46,327 INFO L287 CegarLoopForPetriNet]: 173 programPoint places, -5 predicate places. [2022-09-20 21:15:46,328 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 330 flow [2022-09-20 21:15:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 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) [2022-09-20 21:15:46,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:15:46,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:15:46,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:15:46,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:15:46,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:15:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1190650759, now seen corresponding path program 1 times [2022-09-20 21:15:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:15:46,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366610489] [2022-09-20 21:15:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:15:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:15:46,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:15:46,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366610489] [2022-09-20 21:15:46,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366610489] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:15:46,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:15:46,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:15:46,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923333342] [2022-09-20 21:15:46,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:15:46,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:15:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:15:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:15:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:15:46,715 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 193 [2022-09-20 21:15:46,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 117.25) internal successors, (938), 8 states have internal predecessors, (938), 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) [2022-09-20 21:15:46,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:15:46,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 193 [2022-09-20 21:15:46,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:15:47,148 INFO L130 PetriNetUnfolder]: 298/754 cut-off events. [2022-09-20 21:15:47,148 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-09-20 21:15:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 754 events. 298/754 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3073 event pairs, 167 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 1251. Up to 438 conditions per place. [2022-09-20 21:15:47,157 INFO L137 encePairwiseOnDemand]: 178/193 looper letters, 62 selfloop transitions, 10 changer transitions 23/193 dead transitions. [2022-09-20 21:15:47,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 193 transitions, 582 flow [2022-09-20 21:15:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:15:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:15:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2022-09-20 21:15:47,164 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6373056994818653 [2022-09-20 21:15:47,165 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2022-09-20 21:15:47,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2022-09-20 21:15:47,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:15:47,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2022-09-20 21:15:47,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 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) [2022-09-20 21:15:47,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 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) [2022-09-20 21:15:47,175 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 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) [2022-09-20 21:15:47,175 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 330 flow. Second operand 8 states and 984 transitions. [2022-09-20 21:15:47,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 193 transitions, 582 flow [2022-09-20 21:15:47,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 193 transitions, 582 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:15:47,182 INFO L231 Difference]: Finished difference. Result has 173 places, 164 transitions, 374 flow [2022-09-20 21:15:47,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=374, PETRI_PLACES=173, PETRI_TRANSITIONS=164} [2022-09-20 21:15:47,183 INFO L287 CegarLoopForPetriNet]: 173 programPoint places, 0 predicate places. [2022-09-20 21:15:47,183 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 164 transitions, 374 flow [2022-09-20 21:15:47,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.25) internal successors, (938), 8 states have internal predecessors, (938), 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) [2022-09-20 21:15:47,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:15:47,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:15:47,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:15:47,185 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)] === [2022-09-20 21:15:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:15:47,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1768030035, now seen corresponding path program 1 times [2022-09-20 21:15:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:15:47,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495113817] [2022-09-20 21:15:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:15:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:15:47,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:15:47,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495113817] [2022-09-20 21:15:47,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495113817] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:15:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737995371] [2022-09-20 21:15:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:47,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:15:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:15:47,394 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) [2022-09-20 21:15:47,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:15:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:47,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:15:47,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:15:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:15:47,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:15:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:15:47,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737995371] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:15:47,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:15:47,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 21:15:47,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505672408] [2022-09-20 21:15:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:15:47,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:15:47,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:15:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:15:47,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:15:47,986 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 193 [2022-09-20 21:15:47,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 164 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 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) [2022-09-20 21:15:47,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:15:47,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 193 [2022-09-20 21:15:47,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:15:48,183 INFO L130 PetriNetUnfolder]: 183/658 cut-off events. [2022-09-20 21:15:48,183 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-09-20 21:15:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 658 events. 183/658 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3090 event pairs, 80 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 999. Up to 149 conditions per place. [2022-09-20 21:15:48,188 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 46 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2022-09-20 21:15:48,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 172 transitions, 498 flow [2022-09-20 21:15:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:15:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:15:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1018 transitions. [2022-09-20 21:15:48,191 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7535159141376758 [2022-09-20 21:15:48,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1018 transitions. [2022-09-20 21:15:48,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1018 transitions. [2022-09-20 21:15:48,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:15:48,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1018 transitions. [2022-09-20 21:15:48,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.42857142857142) internal successors, (1018), 7 states have internal predecessors, (1018), 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) [2022-09-20 21:15:48,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 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) [2022-09-20 21:15:48,197 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 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) [2022-09-20 21:15:48,198 INFO L175 Difference]: Start difference. First operand has 173 places, 164 transitions, 374 flow. Second operand 7 states and 1018 transitions. [2022-09-20 21:15:48,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 172 transitions, 498 flow [2022-09-20 21:15:48,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 172 transitions, 474 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-20 21:15:48,202 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 383 flow [2022-09-20 21:15:48,203 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2022-09-20 21:15:48,203 INFO L287 CegarLoopForPetriNet]: 173 programPoint places, 0 predicate places. [2022-09-20 21:15:48,203 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 383 flow [2022-09-20 21:15:48,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 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) [2022-09-20 21:15:48,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:15:48,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:15:48,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 21:15:48,427 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 [2022-09-20 21:15:48,428 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)] === [2022-09-20 21:15:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:15:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1596351708, now seen corresponding path program 1 times [2022-09-20 21:15:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:15:48,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686795647] [2022-09-20 21:15:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:48,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:15:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:15:48,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:15:48,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686795647] [2022-09-20 21:15:48,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686795647] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:15:48,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523357266] [2022-09-20 21:15:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:48,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:15:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:15:48,601 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) [2022-09-20 21:15:48,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:15:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:48,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:15:48,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:15:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:15:48,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:15:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:15:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523357266] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:15:49,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:15:49,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-09-20 21:15:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815677233] [2022-09-20 21:15:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:15:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:15:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:15:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:15:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-09-20 21:15:49,115 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 193 [2022-09-20 21:15:49,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 166 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 135.66666666666666) internal successors, (1221), 9 states have internal predecessors, (1221), 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) [2022-09-20 21:15:49,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:15:49,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 193 [2022-09-20 21:15:49,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:15:49,527 INFO L130 PetriNetUnfolder]: 880/1695 cut-off events. [2022-09-20 21:15:49,527 INFO L131 PetriNetUnfolder]: For 559/818 co-relation queries the response was YES. [2022-09-20 21:15:49,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 1695 events. 880/1695 cut-off events. For 559/818 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9249 event pairs, 249 based on Foata normal form. 259/1781 useless extension candidates. Maximal degree in co-relation 3444. Up to 445 conditions per place. [2022-09-20 21:15:49,542 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 97 selfloop transitions, 17 changer transitions 0/226 dead transitions. [2022-09-20 21:15:49,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 226 transitions, 782 flow [2022-09-20 21:15:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:15:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:15:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1548 transitions. [2022-09-20 21:15:49,546 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7291568535091851 [2022-09-20 21:15:49,546 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1548 transitions. [2022-09-20 21:15:49,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1548 transitions. [2022-09-20 21:15:49,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:15:49,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1548 transitions. [2022-09-20 21:15:49,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.72727272727272) internal successors, (1548), 11 states have internal predecessors, (1548), 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) [2022-09-20 21:15:49,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 193.0) internal successors, (2316), 12 states have internal predecessors, (2316), 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) [2022-09-20 21:15:49,555 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 193.0) internal successors, (2316), 12 states have internal predecessors, (2316), 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) [2022-09-20 21:15:49,555 INFO L175 Difference]: Start difference. First operand has 173 places, 166 transitions, 383 flow. Second operand 11 states and 1548 transitions. [2022-09-20 21:15:49,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 226 transitions, 782 flow [2022-09-20 21:15:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 226 transitions, 769 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:15:49,560 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 463 flow [2022-09-20 21:15:49,561 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=463, PETRI_PLACES=183, PETRI_TRANSITIONS=177} [2022-09-20 21:15:49,562 INFO L287 CegarLoopForPetriNet]: 173 programPoint places, 10 predicate places. [2022-09-20 21:15:49,562 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 463 flow [2022-09-20 21:15:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.66666666666666) internal successors, (1221), 9 states have internal predecessors, (1221), 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) [2022-09-20 21:15:49,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:15:49,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:15:49,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:15:49,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-09-20 21:15:49,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:15:49,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:15:49,789 INFO L85 PathProgramCache]: Analyzing trace with hash 395552180, now seen corresponding path program 2 times [2022-09-20 21:15:49,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:15:49,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842599532] [2022-09-20 21:15:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:49,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:15:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:15:49,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:15:49,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842599532] [2022-09-20 21:15:49,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842599532] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:15:49,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402913803] [2022-09-20 21:15:49,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:15:49,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:15:49,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:15:49,905 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) [2022-09-20 21:15:49,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:15:50,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 21:15:50,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:15:50,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 21:15:50,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:15:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:15:50,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:15:50,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402913803] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:15:50,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:15:50,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-09-20 21:15:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124567977] [2022-09-20 21:15:50,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:15:50,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:15:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:15:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:15:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:15:50,221 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 193 [2022-09-20 21:15:50,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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) [2022-09-20 21:15:50,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:15:50,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 193 [2022-09-20 21:15:50,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:15:50,567 INFO L130 PetriNetUnfolder]: 618/1354 cut-off events. [2022-09-20 21:15:50,568 INFO L131 PetriNetUnfolder]: For 873/1087 co-relation queries the response was YES. [2022-09-20 21:15:50,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1354 events. 618/1354 cut-off events. For 873/1087 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7302 event pairs, 178 based on Foata normal form. 241/1558 useless extension candidates. Maximal degree in co-relation 3100. Up to 535 conditions per place. [2022-09-20 21:15:50,580 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 57 selfloop transitions, 13 changer transitions 0/190 dead transitions. [2022-09-20 21:15:50,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 190 transitions, 656 flow [2022-09-20 21:15:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:15:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:15:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2022-09-20 21:15:50,583 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6955958549222798 [2022-09-20 21:15:50,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2022-09-20 21:15:50,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2022-09-20 21:15:50,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:15:50,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2022-09-20 21:15:50,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 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) [2022-09-20 21:15:50,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 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) [2022-09-20 21:15:50,589 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 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) [2022-09-20 21:15:50,589 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 463 flow. Second operand 8 states and 1074 transitions. [2022-09-20 21:15:50,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 190 transitions, 656 flow [2022-09-20 21:15:50,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 649 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:15:50,599 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 524 flow [2022-09-20 21:15:50,600 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2022-09-20 21:15:50,602 INFO L287 CegarLoopForPetriNet]: 173 programPoint places, 15 predicate places. [2022-09-20 21:15:50,602 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 524 flow [2022-09-20 21:15:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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) [2022-09-20 21:15:50,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:15:50,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:15:50,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-20 21:15:50,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:15:50,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:15:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:15:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 958212001, now seen corresponding path program 1 times [2022-09-20 21:15:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:15:50,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035554348] [2022-09-20 21:15:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:15:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:15:52,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:15:52,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035554348] [2022-09-20 21:15:52,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035554348] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:15:52,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837245421] [2022-09-20 21:15:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:15:52,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:15:52,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:15:52,479 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) [2022-09-20 21:15:52,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:15:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:15:52,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 73 conjunts are in the unsatisfiable core [2022-09-20 21:15:52,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:15:54,293 INFO L356 Elim1Store]: treesize reduction 28, result has 56.9 percent of original size [2022-09-20 21:15:54,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 52 [2022-09-20 21:15:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:15:54,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:15:54,912 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:15:54,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 118 [2022-09-20 21:15:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:15:55,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837245421] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:15:55,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:15:55,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 30, 20] total 70 [2022-09-20 21:15:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522865131] [2022-09-20 21:15:55,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:15:55,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-09-20 21:15:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:15:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-09-20 21:15:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=717, Invalid=4113, Unknown=0, NotChecked=0, Total=4830 [2022-09-20 21:15:56,002 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 193 [2022-09-20 21:15:56,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 524 flow. Second operand has 70 states, 70 states have (on average 73.61428571428571) internal successors, (5153), 70 states have internal predecessors, (5153), 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) [2022-09-20 21:15:56,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:15:56,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 193 [2022-09-20 21:15:56,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:02,967 INFO L130 PetriNetUnfolder]: 3598/7143 cut-off events. [2022-09-20 21:16:02,967 INFO L131 PetriNetUnfolder]: For 6953/7031 co-relation queries the response was YES. [2022-09-20 21:16:02,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17624 conditions, 7143 events. 3598/7143 cut-off events. For 6953/7031 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 54523 event pairs, 703 based on Foata normal form. 25/7049 useless extension candidates. Maximal degree in co-relation 17610. Up to 2073 conditions per place. [2022-09-20 21:16:03,035 INFO L137 encePairwiseOnDemand]: 141/193 looper letters, 375 selfloop transitions, 221 changer transitions 18/682 dead transitions. [2022-09-20 21:16:03,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 682 transitions, 3578 flow [2022-09-20 21:16:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-09-20 21:16:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-09-20 21:16:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 6080 transitions. [2022-09-20 21:16:03,053 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.39876697055158394 [2022-09-20 21:16:03,054 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 6080 transitions. [2022-09-20 21:16:03,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 6080 transitions. [2022-09-20 21:16:03,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:03,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 6080 transitions. [2022-09-20 21:16:03,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 76.9620253164557) internal successors, (6080), 79 states have internal predecessors, (6080), 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) [2022-09-20 21:16:03,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 193.0) internal successors, (15440), 80 states have internal predecessors, (15440), 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) [2022-09-20 21:16:03,106 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 193.0) internal successors, (15440), 80 states have internal predecessors, (15440), 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) [2022-09-20 21:16:03,107 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 524 flow. Second operand 79 states and 6080 transitions. [2022-09-20 21:16:03,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 682 transitions, 3578 flow [2022-09-20 21:16:03,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 682 transitions, 3489 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-09-20 21:16:03,158 INFO L231 Difference]: Finished difference. Result has 302 places, 386 transitions, 2137 flow [2022-09-20 21:16:03,159 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=2137, PETRI_PLACES=302, PETRI_TRANSITIONS=386} [2022-09-20 21:16:03,161 INFO L287 CegarLoopForPetriNet]: 173 programPoint places, 129 predicate places. [2022-09-20 21:16:03,161 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 386 transitions, 2137 flow [2022-09-20 21:16:03,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 73.61428571428571) internal successors, (5153), 70 states have internal predecessors, (5153), 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) [2022-09-20 21:16:03,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:03,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:03,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 21:16:03,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:16:03,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:16:03,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1311842309, now seen corresponding path program 2 times [2022-09-20 21:16:03,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:03,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637812859] [2022-09-20 21:16:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:16:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637812859] [2022-09-20 21:16:05,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637812859] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:16:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259698133] [2022-09-20 21:16:05,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:16:05,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:16:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:16:05,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:16:05,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:16:05,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:16:05,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:16:05,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 85 conjunts are in the unsatisfiable core [2022-09-20 21:16:05,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:16:06,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-20 21:16:07,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:16:07,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:16:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:16:07,770 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-09-20 21:16:07,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-09-20 21:16:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:16:07,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:16:07,889 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-09-20 21:16:07,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-09-20 21:16:08,114 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:16:08,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 98 [2022-09-20 21:16:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:16:08,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:16:08,761 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int)) (or (< 0 ~M~0) (= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse1 (* ~M~0 4))) (+ c_~res2~0 (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:08,848 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int))) (or (< 0 ~M~0) (= c_~res1~0 (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:08,870 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int))) (or (< 0 ~M~0) (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0)) (let ((.cse2 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse2)) (select (select |c_#memory_int| c_~B~0.base) (+ c_~B~0.offset .cse2)) c_~res1~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:08,906 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int))) (or (< 0 ~M~0) (= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset) c_~res1~0) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:08,987 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int)) (v_ArrVal_235 (Array Int Int))) (or (< 0 ~M~0) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_235))) (= (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) c_~res1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (let ((.cse1 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse2 (* ~M~0 4))) (+ c_~res2~0 (select (select .cse1 c_~A~0.base) (+ c_~A~0.offset .cse2)) (select (select .cse1 c_~B~0.base) (+ .cse2 c_~B~0.offset)))))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:09,104 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int)) (v_ArrVal_235 (Array Int Int))) (or (< 0 ~M~0) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_235))) (= (+ (select (select .cse0 |c_ULTIMATE.start_main_#t~ret19#1.base|) |c_ULTIMATE.start_main_#t~ret19#1.offset|) c_~res1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (let ((.cse1 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse2 (* ~M~0 4))) (+ (select (select .cse1 |c_ULTIMATE.start_main_#t~ret19#1.base|) (+ .cse2 |c_ULTIMATE.start_main_#t~ret19#1.offset|)) c_~res2~0 (select (select .cse1 c_~A~0.base) (+ c_~A~0.offset .cse2)))))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:09,130 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int)) (v_ArrVal_235 (Array Int Int))) (or (< 0 ~M~0) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_235))) (= (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) c_~res1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (let ((.cse1 (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse2 (* ~M~0 4))) (+ c_~res2~0 (select (select .cse1 c_~A~0.base) (+ c_~A~0.offset .cse2)) (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ .cse2 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:09,145 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (~M~0 Int) (v_ArrVal_236 (Array Int Int)) (v_ArrVal_235 (Array Int Int))) (or (< 0 ~M~0) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_235))) (= (let ((.cse0 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_237)) (.cse1 (* ~M~0 4))) (+ c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (+ c_~res1~0 (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select (select .cse2 c_~A~0.base) c_~A~0.offset)))) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-09-20 21:16:09,212 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:16:09,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 70 [2022-09-20 21:16:09,291 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:16:09,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38390 treesize of output 32330 [2022-09-20 21:16:09,404 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:16:09,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32246 treesize of output 29190 [2022-09-20 21:16:09,523 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:16:09,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29174 treesize of output 23046 [2022-09-20 21:16:09,688 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:16:09,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 23030 treesize of output 19518 Received shutdown request... [2022-09-20 21:29:42,733 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 21:29:42,742 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 [2022-09-20 21:29:42,742 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:29:42,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-20 21:29:42,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:29:42,940 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 158 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-09-20 21:29:42,941 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 21:29:42,941 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 21:29:42,942 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 21:29:42,942 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-09-20 21:29:42,945 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:29:42,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:29:42,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:29:42 BasicIcfg [2022-09-20 21:29:42,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:29:42,950 INFO L158 Benchmark]: Toolchain (without parser) took 838485.30ms. Allocated memory was 188.7MB in the beginning and 836.8MB in the end (delta: 648.0MB). Free memory was 132.0MB in the beginning and 406.0MB in the end (delta: -274.1MB). Peak memory consumption was 552.3MB. Max. memory is 8.0GB. [2022-09-20 21:29:42,950 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 149.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:29:42,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.27ms. Allocated memory is still 188.7MB. Free memory was 131.8MB in the beginning and 163.9MB in the end (delta: -32.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-09-20 21:29:42,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.11ms. Allocated memory is still 188.7MB. Free memory was 163.9MB in the beginning and 161.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-20 21:29:42,951 INFO L158 Benchmark]: Boogie Preprocessor took 45.62ms. Allocated memory is still 188.7MB. Free memory was 161.3MB in the beginning and 159.4MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 21:29:42,951 INFO L158 Benchmark]: RCFGBuilder took 749.29ms. Allocated memory is still 188.7MB. Free memory was 159.2MB in the beginning and 110.9MB in the end (delta: 48.3MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2022-09-20 21:29:42,951 INFO L158 Benchmark]: TraceAbstraction took 837364.85ms. Allocated memory was 188.7MB in the beginning and 836.8MB in the end (delta: 648.0MB). Free memory was 110.4MB in the beginning and 406.0MB in the end (delta: -295.7MB). Peak memory consumption was 531.3MB. Max. memory is 8.0GB. [2022-09-20 21:29:42,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 149.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 275.27ms. Allocated memory is still 188.7MB. Free memory was 131.8MB in the beginning and 163.9MB in the end (delta: -32.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.11ms. Allocated memory is still 188.7MB. Free memory was 163.9MB in the beginning and 161.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.62ms. Allocated memory is still 188.7MB. Free memory was 161.3MB in the beginning and 159.4MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 749.29ms. Allocated memory is still 188.7MB. Free memory was 159.2MB in the beginning and 110.9MB in the end (delta: 48.3MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * TraceAbstraction took 837364.85ms. Allocated memory was 188.7MB in the beginning and 836.8MB in the end (delta: 648.0MB). Free memory was 110.4MB in the beginning and 406.0MB in the end (delta: -295.7MB). Peak memory consumption was 531.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 158 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 158 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 158 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 158 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 208 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: 837.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2622 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2622 mSDsluCounter, 2024 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 309 IncrementalHoareTripleChecker+Unchecked, 2567 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3831 IncrementalHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 193 mSDtfsCounter, 3831 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1217 GetRequests, 1013 SyntacticMatches, 10 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6296 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2137occurred in iteration=6, InterpolantAutomatonStates: 115, 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, 0.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1482 NumberOfCodeBlocks, 1463 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1925 ConstructedInterpolants, 10 QuantifiedInterpolants, 11866 SizeOfPredicates, 59 NumberOfNonLiveVariables, 1440 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 18/33 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