/usr/bin/java -Xmx16000000000 -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-two-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:48:54,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:48:54,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:48:54,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:48:54,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:48:54,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:48:54,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:48:54,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:48:54,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:48:54,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:48:54,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:48:54,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:48:54,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:48:54,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:48:54,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:48:54,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:48:54,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:48:54,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:48:54,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:48:54,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:48:54,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:48:54,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:48:54,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:48:54,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:48:54,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:48:54,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:48:54,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:48:54,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:48:54,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:48:54,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:48:54,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:48:54,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:48:54,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:48:54,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:48:54,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:48:54,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:48:54,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:48:54,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:48:54,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:48:54,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:48:54,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:48:54,529 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 [2022-01-19 02:48:54,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:48:54,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:48:54,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:48:54,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:48:54,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:48:54,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:48:54,546 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:48:54,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:48:54,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:48:54,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:48:54,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:48:54,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:48:54,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:48:54,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:48:54,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:48:54,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:48:54,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:48:54,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:48:54,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:48:54,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:48:54,765 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:48:54,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-two-queue.wvr.c [2022-01-19 02:48:54,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf615deec/78c4e471e4fe44fbb846a1a812380b77/FLAGa23ac54a6 [2022-01-19 02:48:55,157 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:48:55,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-two-queue.wvr.c [2022-01-19 02:48:55,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf615deec/78c4e471e4fe44fbb846a1a812380b77/FLAGa23ac54a6 [2022-01-19 02:48:55,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf615deec/78c4e471e4fe44fbb846a1a812380b77 [2022-01-19 02:48:55,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:48:55,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:48:55,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:48:55,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:48:55,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:48:55,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2873c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55, skipping insertion in model container [2022-01-19 02:48:55,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:48:55,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:48:55,802 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-two-queue.wvr.c[2987,3000] [2022-01-19 02:48:55,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:48:55,821 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:48:55,851 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-two-queue.wvr.c[2987,3000] [2022-01-19 02:48:55,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:48:55,866 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:48:55,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55 WrapperNode [2022-01-19 02:48:55,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:48:55,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:48:55,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:48:55,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:48:55,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,914 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 200 [2022-01-19 02:48:55,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:48:55,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:48:55,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:48:55,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:48:55,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:48:55,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:48:55,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:48:55,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:48:55,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (1/1) ... [2022-01-19 02:48:55,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:48:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:48:55,979 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) [2022-01-19 02:48:55,998 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 [2022-01-19 02:48:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:48:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:48:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:48:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:48:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:48:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:48:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:48:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:48:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:48:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:48:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 02:48:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:48:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:48:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:48:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:48:56,013 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 02:48:56,089 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:48:56,090 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:48:56,311 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:48:56,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:48:56,389 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 02:48:56,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:48:56 BoogieIcfgContainer [2022-01-19 02:48:56,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:48:56,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:48:56,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:48:56,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:48:56,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:48:55" (1/3) ... [2022-01-19 02:48:56,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12905396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:48:56, skipping insertion in model container [2022-01-19 02:48:56,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:48:55" (2/3) ... [2022-01-19 02:48:56,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12905396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:48:56, skipping insertion in model container [2022-01-19 02:48:56,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:48:56" (3/3) ... [2022-01-19 02:48:56,396 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2022-01-19 02:48:56,399 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:48:56,399 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:48:56,400 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:48:56,428 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,429 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,430 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,430 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,430 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,430 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,431 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,431 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,431 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,431 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,432 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,437 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,437 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,437 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,437 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,437 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,438 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:48:56,445 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 02:48:56,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:48:56,484 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 02:48:56,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 02:48:56,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 172 places, 178 transitions, 372 flow [2022-01-19 02:48:56,538 INFO L129 PetriNetUnfolder]: 13/176 cut-off events. [2022-01-19 02:48:56,538 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:48:56,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 13/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-01-19 02:48:56,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 178 transitions, 372 flow [2022-01-19 02:48:56,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 346 flow [2022-01-19 02:48:56,568 INFO L129 PetriNetUnfolder]: 13/166 cut-off events. [2022-01-19 02:48:56,568 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:48:56,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:56,569 INFO L254 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] [2022-01-19 02:48:56,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash -715974748, now seen corresponding path program 1 times [2022-01-19 02:48:56,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:56,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821520489] [2022-01-19 02:48:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:56,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:48:56,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:56,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821520489] [2022-01-19 02:48:56,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821520489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:48:56,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:48:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 02:48:56,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139819293] [2022-01-19 02:48:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:48:56,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 02:48:56,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 02:48:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 02:48:56,860 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 178 [2022-01-19 02:48:56,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 167 transitions, 346 flow. Second operand has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 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) [2022-01-19 02:48:56,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:56,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 178 [2022-01-19 02:48:56,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:56,946 INFO L129 PetriNetUnfolder]: 17/189 cut-off events. [2022-01-19 02:48:56,946 INFO L130 PetriNetUnfolder]: For 17/20 co-relation queries the response was YES. [2022-01-19 02:48:56,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 189 events. 17/189 cut-off events. For 17/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 203 event pairs, 8 based on Foata normal form. 15/192 useless extension candidates. Maximal degree in co-relation 137. Up to 25 conditions per place. [2022-01-19 02:48:56,950 INFO L132 encePairwiseOnDemand]: 169/178 looper letters, 8 selfloop transitions, 0 changer transitions 5/158 dead transitions. [2022-01-19 02:48:56,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 158 transitions, 344 flow [2022-01-19 02:48:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 02:48:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 02:48:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 337 transitions. [2022-01-19 02:48:56,980 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9466292134831461 [2022-01-19 02:48:56,981 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 337 transitions. [2022-01-19 02:48:56,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 337 transitions. [2022-01-19 02:48:56,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:56,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 337 transitions. [2022-01-19 02:48:56,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 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) [2022-01-19 02:48:56,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2022-01-19 02:48:56,996 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2022-01-19 02:48:56,997 INFO L186 Difference]: Start difference. First operand has 161 places, 167 transitions, 346 flow. Second operand 2 states and 337 transitions. [2022-01-19 02:48:56,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 158 transitions, 344 flow [2022-01-19 02:48:57,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:48:57,005 INFO L242 Difference]: Finished difference. Result has 158 places, 153 transitions, 310 flow [2022-01-19 02:48:57,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=310, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2022-01-19 02:48:57,010 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, -3 predicate places. [2022-01-19 02:48:57,011 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 310 flow [2022-01-19 02:48:57,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 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) [2022-01-19 02:48:57,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:57,012 INFO L254 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] [2022-01-19 02:48:57,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:48:57,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1666625947, now seen corresponding path program 1 times [2022-01-19 02:48:57,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:57,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428946618] [2022-01-19 02:48:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:57,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:48:57,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:57,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428946618] [2022-01-19 02:48:57,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428946618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:48:57,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:48:57,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:48:57,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275417864] [2022-01-19 02:48:57,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:48:57,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:48:57,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:48:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:48:57,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 178 [2022-01-19 02:48:57,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:48:57,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:57,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 178 [2022-01-19 02:48:57,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:57,480 INFO L129 PetriNetUnfolder]: 112/418 cut-off events. [2022-01-19 02:48:57,480 INFO L130 PetriNetUnfolder]: For 20/32 co-relation queries the response was YES. [2022-01-19 02:48:57,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 418 events. 112/418 cut-off events. For 20/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1483 event pairs, 33 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 673. Up to 120 conditions per place. [2022-01-19 02:48:57,484 INFO L132 encePairwiseOnDemand]: 171/178 looper letters, 59 selfloop transitions, 5 changer transitions 4/183 dead transitions. [2022-01-19 02:48:57,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 183 transitions, 511 flow [2022-01-19 02:48:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:48:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:48:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 819 transitions. [2022-01-19 02:48:57,487 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668539325842697 [2022-01-19 02:48:57,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 819 transitions. [2022-01-19 02:48:57,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 819 transitions. [2022-01-19 02:48:57,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:57,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 819 transitions. [2022-01-19 02:48:57,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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) [2022-01-19 02:48:57,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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) [2022-01-19 02:48:57,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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) [2022-01-19 02:48:57,492 INFO L186 Difference]: Start difference. First operand has 158 places, 153 transitions, 310 flow. Second operand 6 states and 819 transitions. [2022-01-19 02:48:57,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 183 transitions, 511 flow [2022-01-19 02:48:57,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 02:48:57,498 INFO L242 Difference]: Finished difference. Result has 161 places, 156 transitions, 339 flow [2022-01-19 02:48:57,499 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=161, PETRI_TRANSITIONS=156} [2022-01-19 02:48:57,499 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 0 predicate places. [2022-01-19 02:48:57,499 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 156 transitions, 339 flow [2022-01-19 02:48:57,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:48:57,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:57,500 INFO L254 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] [2022-01-19 02:48:57,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:48:57,501 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1964545469, now seen corresponding path program 1 times [2022-01-19 02:48:57,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588921435] [2022-01-19 02:48:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:57,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:48:57,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588921435] [2022-01-19 02:48:57,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588921435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:48:57,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:48:57,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 02:48:57,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455962582] [2022-01-19 02:48:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:48:57,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 02:48:57,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 02:48:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 02:48:57,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 178 [2022-01-19 02:48:57,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 156 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 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) [2022-01-19 02:48:57,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:57,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 178 [2022-01-19 02:48:57,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:57,748 INFO L129 PetriNetUnfolder]: 109/423 cut-off events. [2022-01-19 02:48:57,749 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-01-19 02:48:57,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 423 events. 109/423 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1589 event pairs, 48 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 706. Up to 117 conditions per place. [2022-01-19 02:48:57,751 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 37 selfloop transitions, 11 changer transitions 4/184 dead transitions. [2022-01-19 02:48:57,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 184 transitions, 515 flow [2022-01-19 02:48:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 02:48:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 02:48:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 789 transitions. [2022-01-19 02:48:57,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8865168539325843 [2022-01-19 02:48:57,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 789 transitions. [2022-01-19 02:48:57,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 789 transitions. [2022-01-19 02:48:57,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:57,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 789 transitions. [2022-01-19 02:48:57,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 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) [2022-01-19 02:48:57,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2022-01-19 02:48:57,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2022-01-19 02:48:57,760 INFO L186 Difference]: Start difference. First operand has 161 places, 156 transitions, 339 flow. Second operand 5 states and 789 transitions. [2022-01-19 02:48:57,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 184 transitions, 515 flow [2022-01-19 02:48:57,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 184 transitions, 511 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 02:48:57,767 INFO L242 Difference]: Finished difference. Result has 163 places, 160 transitions, 392 flow [2022-01-19 02:48:57,767 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2022-01-19 02:48:57,768 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 2 predicate places. [2022-01-19 02:48:57,769 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 392 flow [2022-01-19 02:48:57,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 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) [2022-01-19 02:48:57,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:57,769 INFO L254 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] [2022-01-19 02:48:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:48:57,770 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash 76398777, now seen corresponding path program 2 times [2022-01-19 02:48:57,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:57,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663416461] [2022-01-19 02:48:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:57,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:48:57,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:57,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663416461] [2022-01-19 02:48:57,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663416461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:48:57,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:48:57,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:48:57,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771230679] [2022-01-19 02:48:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:48:57,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:48:57,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:48:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:48:57,878 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 178 [2022-01-19 02:48:57,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 392 flow. Second operand has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 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) [2022-01-19 02:48:57,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:57,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 178 [2022-01-19 02:48:57,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:57,967 INFO L129 PetriNetUnfolder]: 91/366 cut-off events. [2022-01-19 02:48:57,968 INFO L130 PetriNetUnfolder]: For 116/127 co-relation queries the response was YES. [2022-01-19 02:48:57,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 366 events. 91/366 cut-off events. For 116/127 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 28 based on Foata normal form. 13/371 useless extension candidates. Maximal degree in co-relation 682. Up to 116 conditions per place. [2022-01-19 02:48:57,971 INFO L132 encePairwiseOnDemand]: 170/178 looper letters, 33 selfloop transitions, 7 changer transitions 6/178 dead transitions. [2022-01-19 02:48:57,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 532 flow [2022-01-19 02:48:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:48:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:48:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 929 transitions. [2022-01-19 02:48:57,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8698501872659176 [2022-01-19 02:48:57,973 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 929 transitions. [2022-01-19 02:48:57,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 929 transitions. [2022-01-19 02:48:57,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:57,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 929 transitions. [2022-01-19 02:48:57,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 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) [2022-01-19 02:48:57,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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) [2022-01-19 02:48:57,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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) [2022-01-19 02:48:57,978 INFO L186 Difference]: Start difference. First operand has 163 places, 160 transitions, 392 flow. Second operand 6 states and 929 transitions. [2022-01-19 02:48:57,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 532 flow [2022-01-19 02:48:57,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 178 transitions, 518 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:48:57,982 INFO L242 Difference]: Finished difference. Result has 166 places, 158 transitions, 385 flow [2022-01-19 02:48:57,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=166, PETRI_TRANSITIONS=158} [2022-01-19 02:48:57,983 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2022-01-19 02:48:57,983 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 158 transitions, 385 flow [2022-01-19 02:48:57,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 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) [2022-01-19 02:48:57,984 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:57,985 INFO L254 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] [2022-01-19 02:48:57,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:48:57,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1283420845, now seen corresponding path program 1 times [2022-01-19 02:48:57,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350706737] [2022-01-19 02:48:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:57,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:48:58,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350706737] [2022-01-19 02:48:58,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350706737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:48:58,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:48:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:48:58,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570671705] [2022-01-19 02:48:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:48:58,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:48:58,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:48:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:48:58,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 178 [2022-01-19 02:48:58,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 158 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2022-01-19 02:48:58,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:58,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 178 [2022-01-19 02:48:58,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:58,177 INFO L129 PetriNetUnfolder]: 31/275 cut-off events. [2022-01-19 02:48:58,177 INFO L130 PetriNetUnfolder]: For 53/59 co-relation queries the response was YES. [2022-01-19 02:48:58,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 275 events. 31/275 cut-off events. For 53/59 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 564 event pairs, 14 based on Foata normal form. 5/271 useless extension candidates. Maximal degree in co-relation 462. Up to 56 conditions per place. [2022-01-19 02:48:58,178 INFO L132 encePairwiseOnDemand]: 169/178 looper letters, 35 selfloop transitions, 6 changer transitions 4/166 dead transitions. [2022-01-19 02:48:58,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 166 transitions, 493 flow [2022-01-19 02:48:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 02:48:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 02:48:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 982 transitions. [2022-01-19 02:48:58,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7881219903691814 [2022-01-19 02:48:58,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 982 transitions. [2022-01-19 02:48:58,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 982 transitions. [2022-01-19 02:48:58,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:58,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 982 transitions. [2022-01-19 02:48:58,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.28571428571428) internal successors, (982), 7 states have internal predecessors, (982), 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) [2022-01-19 02:48:58,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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) [2022-01-19 02:48:58,185 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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) [2022-01-19 02:48:58,185 INFO L186 Difference]: Start difference. First operand has 166 places, 158 transitions, 385 flow. Second operand 7 states and 982 transitions. [2022-01-19 02:48:58,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 166 transitions, 493 flow [2022-01-19 02:48:58,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 166 transitions, 473 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 02:48:58,189 INFO L242 Difference]: Finished difference. Result has 170 places, 159 transitions, 389 flow [2022-01-19 02:48:58,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=170, PETRI_TRANSITIONS=159} [2022-01-19 02:48:58,191 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 9 predicate places. [2022-01-19 02:48:58,192 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 159 transitions, 389 flow [2022-01-19 02:48:58,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2022-01-19 02:48:58,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:58,192 INFO L254 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] [2022-01-19 02:48:58,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:48:58,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2085282566, now seen corresponding path program 1 times [2022-01-19 02:48:58,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:58,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663985242] [2022-01-19 02:48:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:58,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:48:58,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:58,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663985242] [2022-01-19 02:48:58,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663985242] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:48:58,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394824606] [2022-01-19 02:48:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:58,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:48:58,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:48:58,272 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) [2022-01-19 02:48:58,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 02:48:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 02:48:58,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:48:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:48:58,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:48:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:48:58,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394824606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:48:58,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:48:58,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-01-19 02:48:58,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691495974] [2022-01-19 02:48:58,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:48:58,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 02:48:58,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:58,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 02:48:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-19 02:48:58,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 178 [2022-01-19 02:48:58,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 159 transitions, 389 flow. Second operand has 11 states, 11 states have (on average 150.9090909090909) internal successors, (1660), 11 states have internal predecessors, (1660), 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) [2022-01-19 02:48:58,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:58,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 178 [2022-01-19 02:48:58,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:59,134 INFO L129 PetriNetUnfolder]: 110/441 cut-off events. [2022-01-19 02:48:59,134 INFO L130 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-01-19 02:48:59,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 441 events. 110/441 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1460 event pairs, 20 based on Foata normal form. 7/445 useless extension candidates. Maximal degree in co-relation 861. Up to 70 conditions per place. [2022-01-19 02:48:59,136 INFO L132 encePairwiseOnDemand]: 170/178 looper letters, 58 selfloop transitions, 19 changer transitions 0/210 dead transitions. [2022-01-19 02:48:59,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 210 transitions, 713 flow [2022-01-19 02:48:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 02:48:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 02:48:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1843 transitions. [2022-01-19 02:48:59,140 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8628277153558053 [2022-01-19 02:48:59,140 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1843 transitions. [2022-01-19 02:48:59,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1843 transitions. [2022-01-19 02:48:59,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:59,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1843 transitions. [2022-01-19 02:48:59,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 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) [2022-01-19 02:48:59,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 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) [2022-01-19 02:48:59,146 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 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) [2022-01-19 02:48:59,146 INFO L186 Difference]: Start difference. First operand has 170 places, 159 transitions, 389 flow. Second operand 12 states and 1843 transitions. [2022-01-19 02:48:59,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 210 transitions, 713 flow [2022-01-19 02:48:59,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 210 transitions, 703 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:48:59,153 INFO L242 Difference]: Finished difference. Result has 181 places, 170 transitions, 498 flow [2022-01-19 02:48:59,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=498, PETRI_PLACES=181, PETRI_TRANSITIONS=170} [2022-01-19 02:48:59,155 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 20 predicate places. [2022-01-19 02:48:59,155 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 170 transitions, 498 flow [2022-01-19 02:48:59,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 150.9090909090909) internal successors, (1660), 11 states have internal predecessors, (1660), 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) [2022-01-19 02:48:59,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:59,156 INFO L254 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] [2022-01-19 02:48:59,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 02:48:59,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 02:48:59,370 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash 409516862, now seen corresponding path program 1 times [2022-01-19 02:48:59,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:59,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070848090] [2022-01-19 02:48:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:59,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:48:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:48:59,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:48:59,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070848090] [2022-01-19 02:48:59,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070848090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:48:59,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:48:59,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:48:59,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680971757] [2022-01-19 02:48:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:48:59,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:48:59,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:48:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:48:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:48:59,422 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 178 [2022-01-19 02:48:59,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 170 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2022-01-19 02:48:59,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:48:59,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 178 [2022-01-19 02:48:59,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:48:59,509 INFO L129 PetriNetUnfolder]: 46/388 cut-off events. [2022-01-19 02:48:59,509 INFO L130 PetriNetUnfolder]: For 233/236 co-relation queries the response was YES. [2022-01-19 02:48:59,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 388 events. 46/388 cut-off events. For 233/236 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1005 event pairs, 21 based on Foata normal form. 4/381 useless extension candidates. Maximal degree in co-relation 737. Up to 90 conditions per place. [2022-01-19 02:48:59,511 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 40 selfloop transitions, 8 changer transitions 17/191 dead transitions. [2022-01-19 02:48:59,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 191 transitions, 682 flow [2022-01-19 02:48:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:48:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:48:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1262 transitions. [2022-01-19 02:48:59,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.787765293383271 [2022-01-19 02:48:59,514 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1262 transitions. [2022-01-19 02:48:59,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1262 transitions. [2022-01-19 02:48:59,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:48:59,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1262 transitions. [2022-01-19 02:48:59,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.22222222222223) internal successors, (1262), 9 states have internal predecessors, (1262), 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) [2022-01-19 02:48:59,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 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) [2022-01-19 02:48:59,518 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 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) [2022-01-19 02:48:59,518 INFO L186 Difference]: Start difference. First operand has 181 places, 170 transitions, 498 flow. Second operand 9 states and 1262 transitions. [2022-01-19 02:48:59,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 191 transitions, 682 flow [2022-01-19 02:48:59,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 191 transitions, 645 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-01-19 02:48:59,522 INFO L242 Difference]: Finished difference. Result has 187 places, 171 transitions, 491 flow [2022-01-19 02:48:59,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=491, PETRI_PLACES=187, PETRI_TRANSITIONS=171} [2022-01-19 02:48:59,522 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 26 predicate places. [2022-01-19 02:48:59,522 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 171 transitions, 491 flow [2022-01-19 02:48:59,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2022-01-19 02:48:59,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:48:59,523 INFO L254 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] [2022-01-19 02:48:59,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 02:48:59,523 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:48:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:48:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1964108106, now seen corresponding path program 1 times [2022-01-19 02:48:59,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:48:59,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355552101] [2022-01-19 02:48:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:48:59,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:48:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:49:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:49:02,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:49:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355552101] [2022-01-19 02:49:02,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355552101] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:49:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892807591] [2022-01-19 02:49:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:49:02,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:49:02,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:49:02,464 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) [2022-01-19 02:49:02,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 02:49:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:49:02,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-19 02:49:02,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:49:05,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 02:49:05,912 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-19 02:49:05,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 48 treesize of output 18 [2022-01-19 02:49:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:49:06,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:49:07,015 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:49:07,015 INFO L387 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 78 treesize of output 138 [2022-01-19 02:49:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:49:10,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892807591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:49:10,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:49:10,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 31] total 104 [2022-01-19 02:49:10,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561472750] [2022-01-19 02:49:10,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:49:10,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-19 02:49:10,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:49:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-19 02:49:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=939, Invalid=9773, Unknown=0, NotChecked=0, Total=10712 [2022-01-19 02:49:10,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 178 [2022-01-19 02:49:10,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 171 transitions, 491 flow. Second operand has 104 states, 104 states have (on average 66.60576923076923) internal successors, (6927), 104 states have internal predecessors, (6927), 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) [2022-01-19 02:49:10,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:49:10,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 178 [2022-01-19 02:49:10,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:49:24,579 INFO L129 PetriNetUnfolder]: 820/1888 cut-off events. [2022-01-19 02:49:24,579 INFO L130 PetriNetUnfolder]: For 1351/1351 co-relation queries the response was YES. [2022-01-19 02:49:24,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 1888 events. 820/1888 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11415 event pairs, 96 based on Foata normal form. 30/1910 useless extension candidates. Maximal degree in co-relation 4864. Up to 633 conditions per place. [2022-01-19 02:49:24,592 INFO L132 encePairwiseOnDemand]: 121/178 looper letters, 286 selfloop transitions, 186 changer transitions 16/542 dead transitions. [2022-01-19 02:49:24,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 542 transitions, 2768 flow [2022-01-19 02:49:24,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-19 02:49:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2022-01-19 02:49:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 7071 transitions. [2022-01-19 02:49:24,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3856768844769281 [2022-01-19 02:49:24,605 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 7071 transitions. [2022-01-19 02:49:24,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 7071 transitions. [2022-01-19 02:49:24,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:49:24,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 7071 transitions. [2022-01-19 02:49:24,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 68.6504854368932) internal successors, (7071), 103 states have internal predecessors, (7071), 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) [2022-01-19 02:49:24,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 178.0) internal successors, (18512), 104 states have internal predecessors, (18512), 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) [2022-01-19 02:49:24,641 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 178.0) internal successors, (18512), 104 states have internal predecessors, (18512), 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) [2022-01-19 02:49:24,642 INFO L186 Difference]: Start difference. First operand has 187 places, 171 transitions, 491 flow. Second operand 103 states and 7071 transitions. [2022-01-19 02:49:24,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 542 transitions, 2768 flow [2022-01-19 02:49:24,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 542 transitions, 2663 flow, removed 29 selfloop flow, removed 7 redundant places. [2022-01-19 02:49:24,656 INFO L242 Difference]: Finished difference. Result has 342 places, 336 transitions, 1893 flow [2022-01-19 02:49:24,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=1893, PETRI_PLACES=342, PETRI_TRANSITIONS=336} [2022-01-19 02:49:24,658 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 181 predicate places. [2022-01-19 02:49:24,658 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 336 transitions, 1893 flow [2022-01-19 02:49:24,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 66.60576923076923) internal successors, (6927), 104 states have internal predecessors, (6927), 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) [2022-01-19 02:49:24,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:49:24,664 INFO L254 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] [2022-01-19 02:49:24,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 02:49:24,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-19 02:49:24,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:49:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:49:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1768141822, now seen corresponding path program 2 times [2022-01-19 02:49:24,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:49:24,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321376521] [2022-01-19 02:49:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:49:24,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:49:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:49:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:49:26,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:49:26,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321376521] [2022-01-19 02:49:26,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321376521] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:49:26,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964150888] [2022-01-19 02:49:26,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:49:26,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:49:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:49:26,656 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) [2022-01-19 02:49:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 02:49:26,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:49:26,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:49:26,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 88 conjunts are in the unsatisfiable core [2022-01-19 02:49:26,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:49:28,853 INFO L387 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 15 treesize of output 11 [2022-01-19 02:49:29,427 INFO L387 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 [2022-01-19 02:49:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:49:29,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:49:30,091 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-01-19 02:49:30,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 13 [2022-01-19 02:49:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:49:30,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:49:32,694 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:49:32,694 INFO L387 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 144 treesize of output 96 [2022-01-19 02:49:32,746 INFO L353 Elim1Store]: treesize reduction 12, result has 89.0 percent of original size [2022-01-19 02:49:32,747 INFO L387 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 585 treesize of output 593 [2022-01-19 02:49:32,770 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:49:32,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 473 treesize of output 401 [2022-01-19 02:49:32,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:49:32,806 INFO L387 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 352 treesize of output 382 [2022-01-19 02:49:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:49:48,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964150888] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:49:48,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:49:48,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 44, 39] total 111 [2022-01-19 02:49:48,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196231803] [2022-01-19 02:49:48,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:49:48,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-19 02:49:48,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:49:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-19 02:49:48,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=11162, Unknown=15, NotChecked=0, Total=12210 [2022-01-19 02:49:48,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 178 [2022-01-19 02:49:48,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 336 transitions, 1893 flow. Second operand has 111 states, 111 states have (on average 59.4954954954955) internal successors, (6604), 111 states have internal predecessors, (6604), 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) [2022-01-19 02:49:48,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:49:48,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 178 [2022-01-19 02:49:48,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:05,224 INFO L129 PetriNetUnfolder]: 2032/4174 cut-off events. [2022-01-19 02:50:05,224 INFO L130 PetriNetUnfolder]: For 32397/32400 co-relation queries the response was YES. [2022-01-19 02:50:05,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21915 conditions, 4174 events. 2032/4174 cut-off events. For 32397/32400 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 30452 event pairs, 126 based on Foata normal form. 5/4156 useless extension candidates. Maximal degree in co-relation 21838. Up to 1038 conditions per place. [2022-01-19 02:50:05,268 INFO L132 encePairwiseOnDemand]: 116/178 looper letters, 436 selfloop transitions, 536 changer transitions 9/1032 dead transitions. [2022-01-19 02:50:05,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1032 transitions, 9864 flow [2022-01-19 02:50:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-19 02:50:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2022-01-19 02:50:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 9497 transitions. [2022-01-19 02:50:05,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.34421891989851394 [2022-01-19 02:50:05,278 INFO L72 ComplementDD]: Start complementDD. Operand 155 states and 9497 transitions. [2022-01-19 02:50:05,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 9497 transitions. [2022-01-19 02:50:05,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:05,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 155 states and 9497 transitions. [2022-01-19 02:50:05,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 156 states, 155 states have (on average 61.270967741935486) internal successors, (9497), 155 states have internal predecessors, (9497), 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) [2022-01-19 02:50:05,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 156 states, 156 states have (on average 178.0) internal successors, (27768), 156 states have internal predecessors, (27768), 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) [2022-01-19 02:50:05,322 INFO L81 ComplementDD]: Finished complementDD. Result has 156 states, 156 states have (on average 178.0) internal successors, (27768), 156 states have internal predecessors, (27768), 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) [2022-01-19 02:50:05,322 INFO L186 Difference]: Start difference. First operand has 342 places, 336 transitions, 1893 flow. Second operand 155 states and 9497 transitions. [2022-01-19 02:50:05,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1032 transitions, 9864 flow [2022-01-19 02:50:05,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1032 transitions, 9619 flow, removed 110 selfloop flow, removed 14 redundant places. [2022-01-19 02:50:05,397 INFO L242 Difference]: Finished difference. Result has 522 places, 786 transitions, 7745 flow [2022-01-19 02:50:05,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=155, PETRI_FLOW=7745, PETRI_PLACES=522, PETRI_TRANSITIONS=786} [2022-01-19 02:50:05,398 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 361 predicate places. [2022-01-19 02:50:05,398 INFO L470 AbstractCegarLoop]: Abstraction has has 522 places, 786 transitions, 7745 flow [2022-01-19 02:50:05,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 59.4954954954955) internal successors, (6604), 111 states have internal predecessors, (6604), 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) [2022-01-19 02:50:05,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:05,400 INFO L254 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] [2022-01-19 02:50:05,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 02:50:05,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:50:05,616 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash -403134848, now seen corresponding path program 3 times [2022-01-19 02:50:05,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:05,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304947642] [2022-01-19 02:50:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:05,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:50:07,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:07,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304947642] [2022-01-19 02:50:07,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304947642] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:50:07,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043688078] [2022-01-19 02:50:07,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:50:07,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:50:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:50:07,442 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) [2022-01-19 02:50:07,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 02:50:07,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 02:50:07,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:50:07,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-19 02:50:07,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:50:09,443 INFO L387 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 15 treesize of output 11 [2022-01-19 02:50:10,037 INFO L387 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 [2022-01-19 02:50:10,247 INFO L387 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 [2022-01-19 02:50:10,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:50:10,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 52 treesize of output 34 [2022-01-19 02:50:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:50:11,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:50:14,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:50:14,521 INFO L387 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 184 treesize of output 124 [2022-01-19 02:50:14,555 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:50:14,555 INFO L387 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 678 treesize of output 714 [2022-01-19 02:50:14,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:50:14,592 INFO L387 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 606 treesize of output 648 [2022-01-19 02:50:14,631 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:50:14,632 INFO L387 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 552 treesize of output 540 [2022-01-19 02:50:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:50:35,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043688078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:50:35,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:50:35,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 45, 37] total 113 [2022-01-19 02:50:35,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751825156] [2022-01-19 02:50:35,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:50:35,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-19 02:50:35,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-19 02:50:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1325, Invalid=11282, Unknown=49, NotChecked=0, Total=12656 [2022-01-19 02:50:35,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 178 [2022-01-19 02:50:35,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 786 transitions, 7745 flow. Second operand has 113 states, 113 states have (on average 59.469026548672566) internal successors, (6720), 113 states have internal predecessors, (6720), 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) [2022-01-19 02:50:35,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:35,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 178 [2022-01-19 02:50:35,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:57,649 INFO L129 PetriNetUnfolder]: 3488/7051 cut-off events. [2022-01-19 02:50:57,649 INFO L130 PetriNetUnfolder]: For 117192/117221 co-relation queries the response was YES. [2022-01-19 02:50:57,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49991 conditions, 7051 events. 3488/7051 cut-off events. For 117192/117221 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 58343 event pairs, 107 based on Foata normal form. 37/7066 useless extension candidates. Maximal degree in co-relation 49876. Up to 1738 conditions per place. [2022-01-19 02:50:57,739 INFO L132 encePairwiseOnDemand]: 118/178 looper letters, 634 selfloop transitions, 1162 changer transitions 42/1889 dead transitions. [2022-01-19 02:50:57,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 1889 transitions, 25813 flow [2022-01-19 02:50:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-01-19 02:50:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2022-01-19 02:50:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 13158 transitions. [2022-01-19 02:50:57,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3454268612832091 [2022-01-19 02:50:57,755 INFO L72 ComplementDD]: Start complementDD. Operand 214 states and 13158 transitions. [2022-01-19 02:50:57,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 214 states and 13158 transitions. [2022-01-19 02:50:57,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:57,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 214 states and 13158 transitions. [2022-01-19 02:50:57,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 215 states, 214 states have (on average 61.48598130841121) internal successors, (13158), 214 states have internal predecessors, (13158), 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) [2022-01-19 02:50:57,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 215 states, 215 states have (on average 178.0) internal successors, (38270), 215 states have internal predecessors, (38270), 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) [2022-01-19 02:50:57,812 INFO L81 ComplementDD]: Finished complementDD. Result has 215 states, 215 states have (on average 178.0) internal successors, (38270), 215 states have internal predecessors, (38270), 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) [2022-01-19 02:50:57,812 INFO L186 Difference]: Start difference. First operand has 522 places, 786 transitions, 7745 flow. Second operand 214 states and 13158 transitions. [2022-01-19 02:50:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 1889 transitions, 25813 flow [2022-01-19 02:50:58,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 1889 transitions, 21805 flow, removed 1924 selfloop flow, removed 66 redundant places. [2022-01-19 02:50:58,612 INFO L242 Difference]: Finished difference. Result has 724 places, 1491 transitions, 18011 flow [2022-01-19 02:50:58,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=214, PETRI_FLOW=18011, PETRI_PLACES=724, PETRI_TRANSITIONS=1491} [2022-01-19 02:50:58,613 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 563 predicate places. [2022-01-19 02:50:58,613 INFO L470 AbstractCegarLoop]: Abstraction has has 724 places, 1491 transitions, 18011 flow [2022-01-19 02:50:58,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 59.469026548672566) internal successors, (6720), 113 states have internal predecessors, (6720), 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) [2022-01-19 02:50:58,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:58,615 INFO L254 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] [2022-01-19 02:50:58,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-19 02:50:58,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:50:58,815 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:58,816 INFO L85 PathProgramCache]: Analyzing trace with hash 316275670, now seen corresponding path program 4 times [2022-01-19 02:50:58,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:58,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745432590] [2022-01-19 02:50:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:58,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:51:00,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:00,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745432590] [2022-01-19 02:51:00,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745432590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:51:00,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429664907] [2022-01-19 02:51:00,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:51:00,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:51:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:51:00,837 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) [2022-01-19 02:51:00,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 02:51:00,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:51:00,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:51:00,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-19 02:51:00,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:51:03,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 02:51:03,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:03,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 48 treesize of output 26 [2022-01-19 02:51:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:51:03,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:51:04,353 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:04,353 INFO L387 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 80 treesize of output 140 [2022-01-19 02:51:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:51:07,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429664907] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:51:07,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:51:07,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 31] total 104 [2022-01-19 02:51:07,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727598852] [2022-01-19 02:51:07,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:51:07,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-19 02:51:07,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:51:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-19 02:51:07,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1019, Invalid=9693, Unknown=0, NotChecked=0, Total=10712 [2022-01-19 02:51:07,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 178 [2022-01-19 02:51:07,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 1491 transitions, 18011 flow. Second operand has 104 states, 104 states have (on average 66.59615384615384) internal successors, (6926), 104 states have internal predecessors, (6926), 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) [2022-01-19 02:51:07,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:51:07,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 178 [2022-01-19 02:51:07,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:51:22,010 INFO L129 PetriNetUnfolder]: 6619/12407 cut-off events. [2022-01-19 02:51:22,011 INFO L130 PetriNetUnfolder]: For 262817/262882 co-relation queries the response was YES. [2022-01-19 02:51:22,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98892 conditions, 12407 events. 6619/12407 cut-off events. For 262817/262882 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 108710 event pairs, 224 based on Foata normal form. 42/12417 useless extension candidates. Maximal degree in co-relation 98734. Up to 3471 conditions per place. [2022-01-19 02:51:22,206 INFO L132 encePairwiseOnDemand]: 122/178 looper letters, 1386 selfloop transitions, 1740 changer transitions 16/3196 dead transitions. [2022-01-19 02:51:22,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 3196 transitions, 48043 flow [2022-01-19 02:51:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-19 02:51:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2022-01-19 02:51:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 8341 transitions. [2022-01-19 02:51:22,213 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.38726901290741944 [2022-01-19 02:51:22,213 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 8341 transitions. [2022-01-19 02:51:22,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 8341 transitions. [2022-01-19 02:51:22,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:51:22,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 8341 transitions. [2022-01-19 02:51:22,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 68.93388429752066) internal successors, (8341), 121 states have internal predecessors, (8341), 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) [2022-01-19 02:51:22,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 178.0) internal successors, (21716), 122 states have internal predecessors, (21716), 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) [2022-01-19 02:51:22,233 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 178.0) internal successors, (21716), 122 states have internal predecessors, (21716), 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) [2022-01-19 02:51:22,234 INFO L186 Difference]: Start difference. First operand has 724 places, 1491 transitions, 18011 flow. Second operand 121 states and 8341 transitions. [2022-01-19 02:51:22,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 3196 transitions, 48043 flow [2022-01-19 02:51:25,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 3196 transitions, 41238 flow, removed 3313 selfloop flow, removed 69 redundant places. [2022-01-19 02:51:25,690 INFO L242 Difference]: Finished difference. Result has 792 places, 2512 transitions, 33901 flow [2022-01-19 02:51:25,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=15134, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=33901, PETRI_PLACES=792, PETRI_TRANSITIONS=2512} [2022-01-19 02:51:25,691 INFO L334 CegarLoopForPetriNet]: 161 programPoint places, 631 predicate places. [2022-01-19 02:51:25,691 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 2512 transitions, 33901 flow [2022-01-19 02:51:25,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 66.59615384615384) internal successors, (6926), 104 states have internal predecessors, (6926), 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) [2022-01-19 02:51:25,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:51:25,692 INFO L254 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] [2022-01-19 02:51:25,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 02:51:25,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-19 02:51:25,902 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:51:25,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:51:25,903 INFO L85 PathProgramCache]: Analyzing trace with hash 866932828, now seen corresponding path program 5 times [2022-01-19 02:51:25,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:51:25,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686229337] [2022-01-19 02:51:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:51:25,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:51:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:51:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:51:28,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:51:28,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686229337] [2022-01-19 02:51:28,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686229337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:51:28,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113727145] [2022-01-19 02:51:28,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 02:51:28,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:51:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:51:28,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:51:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 02:51:28,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:51:28,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:51:28,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-19 02:51:28,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:51:28,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 [2022-01-19 02:51:28,826 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 02:51:28,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 02:51:29,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:51:29,874 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-19 02:51:29,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-19 02:51:30,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-01-19 02:51:30,279 INFO L387 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 [2022-01-19 02:51:30,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-01-19 02:51:30,704 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:30,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 56 treesize of output 36 [2022-01-19 02:51:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:51:31,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:51:43,409 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:43,409 INFO L387 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 233 treesize of output 161 [2022-01-19 02:51:43,451 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:43,452 INFO L387 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 9304 treesize of output 8788 [2022-01-19 02:51:43,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:43,519 INFO L387 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 8680 treesize of output 7840 [2022-01-19 02:51:43,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:43,592 INFO L387 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 7744 treesize of output 5968 [2022-01-19 02:51:43,669 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:51:43,669 INFO L387 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 5872 treesize of output 5500 [2022-01-19 02:51:43,745 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-19 02:51:43,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-19 02:51:43,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:51:43,951 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-19 02:51:43,954 INFO L158 Benchmark]: Toolchain (without parser) took 168362.83ms. Allocated memory was 373.3MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 319.6MB in the beginning and 1.1GB in the end (delta: -809.0MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-19 02:51:43,954 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory is still 336.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:51:43,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.24ms. Allocated memory was 373.3MB in the beginning and 474.0MB in the end (delta: 100.7MB). Free memory was 319.4MB in the beginning and 446.8MB in the end (delta: -127.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. [2022-01-19 02:51:43,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.25ms. Allocated memory is still 474.0MB. Free memory was 446.8MB in the beginning and 444.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:51:43,955 INFO L158 Benchmark]: Boogie Preprocessor took 33.31ms. Allocated memory is still 474.0MB. Free memory was 444.8MB in the beginning and 443.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:51:43,955 INFO L158 Benchmark]: RCFGBuilder took 441.72ms. Allocated memory is still 474.0MB. Free memory was 443.0MB in the beginning and 418.4MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-19 02:51:43,955 INFO L158 Benchmark]: TraceAbstraction took 167561.80ms. Allocated memory was 474.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 417.9MB in the beginning and 1.1GB in the end (delta: -710.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-19 02:51:43,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory is still 336.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 275.24ms. Allocated memory was 373.3MB in the beginning and 474.0MB in the end (delta: 100.7MB). Free memory was 319.4MB in the beginning and 446.8MB in the end (delta: -127.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.25ms. Allocated memory is still 474.0MB. Free memory was 446.8MB in the beginning and 444.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.31ms. Allocated memory is still 474.0MB. Free memory was 444.8MB in the beginning and 443.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 441.72ms. Allocated memory is still 474.0MB. Free memory was 443.0MB in the beginning and 418.4MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 167561.80ms. Allocated memory was 474.0MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 417.9MB in the beginning and 1.1GB in the end (delta: -710.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-19 02:51:43,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...