/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:41:58,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:41:58,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:41:58,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:41:58,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:41:58,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:41:58,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:41:58,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:41:58,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:41:58,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:41:58,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:41:58,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:41:58,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:41:58,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:41:58,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:41:58,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:41:58,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:41:58,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:41:58,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:41:58,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:41:58,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:41:58,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:41:58,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:41:58,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:41:58,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:41:58,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:41:58,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:41:58,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:41:58,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:41:58,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:41:58,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:41:58,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:41:58,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:41:58,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:41:58,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:41:58,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:41:58,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:41:58,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:41:58,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:41:58,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:41:58,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:41:58,808 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 [2022-12-05 19:41:58,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:41:58,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:41:58,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:41:58,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:41:58,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:41:58,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:41:58,834 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:41:58,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:41:58,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:41:58,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:41:58,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:41:58,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:41:58,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:41:58,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:41:58,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:41:58,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:41:58,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:41:58,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:41:58,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:41:59,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:41:59,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:41:59,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:41:59,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:41:59,125 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:41:59,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2022-12-05 19:42:00,189 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:42:00,362 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:42:00,363 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2022-12-05 19:42:00,369 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0686313b9/e7925fc22e7945848594723fc5c3cdcc/FLAG0d78d6412 [2022-12-05 19:42:00,379 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0686313b9/e7925fc22e7945848594723fc5c3cdcc [2022-12-05 19:42:00,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:42:00,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:42:00,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:42:00,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:42:00,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:42:00,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b230daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00, skipping insertion in model container [2022-12-05 19:42:00,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:42:00,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:42:00,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:42:00,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:42:00,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:42:00,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:42:00,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:42:00,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:42:00,505 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-12-05 19:42:00,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:42:00,517 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:42:00,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:42:00,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:42:00,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:42:00,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:42:00,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:42:00,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:42:00,543 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-12-05 19:42:00,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:42:00,563 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:42:00,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00 WrapperNode [2022-12-05 19:42:00,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:42:00,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:42:00,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:42:00,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:42:00,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,621 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2022-12-05 19:42:00,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:42:00,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:42:00,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:42:00,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:42:00,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,646 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:42:00,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:42:00,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:42:00,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:42:00,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (1/1) ... [2022-12-05 19:42:00,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:42:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:00,683 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) [2022-12-05 19:42:00,752 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 [2022-12-05 19:42:00,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:42:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:42:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:42:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:42:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:42:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:42:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 19:42:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:42:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:42:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:42:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:42:00,774 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:42:00,925 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:42:00,927 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:42:01,369 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:42:01,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:42:01,435 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 19:42:01,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:42:01 BoogieIcfgContainer [2022-12-05 19:42:01,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:42:01,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:42:01,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:42:01,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:42:01,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:42:00" (1/3) ... [2022-12-05 19:42:01,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671f559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:42:01, skipping insertion in model container [2022-12-05 19:42:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:42:00" (2/3) ... [2022-12-05 19:42:01,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671f559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:42:01, skipping insertion in model container [2022-12-05 19:42:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:42:01" (3/3) ... [2022-12-05 19:42:01,446 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-12-05 19:42:01,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:42:01,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:42:01,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:42:01,537 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 19:42:01,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 280 transitions, 584 flow [2022-12-05 19:42:01,625 INFO L130 PetriNetUnfolder]: 27/277 cut-off events. [2022-12-05 19:42:01,625 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:42:01,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 27/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 218. Up to 3 conditions per place. [2022-12-05 19:42:01,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 280 transitions, 584 flow [2022-12-05 19:42:01,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 267 transitions, 552 flow [2022-12-05 19:42:01,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:42:01,649 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@95ca9f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:42:01,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 19:42:01,696 INFO L130 PetriNetUnfolder]: 27/266 cut-off events. [2022-12-05 19:42:01,697 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:42:01,697 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:01,697 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:01,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2091134350, now seen corresponding path program 1 times [2022-12-05 19:42:01,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:01,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279713678] [2022-12-05 19:42:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:01,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:42:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279713678] [2022-12-05 19:42:02,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279713678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:42:02,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:42:02,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:42:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688777135] [2022-12-05 19:42:02,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:42:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:42:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:42:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:42:02,568 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 280 [2022-12-05 19:42:02,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 267 transitions, 552 flow. Second operand has 8 states, 8 states have (on average 164.625) internal successors, (1317), 8 states have internal predecessors, (1317), 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) [2022-12-05 19:42:02,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:02,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 280 [2022-12-05 19:42:02,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:02,894 INFO L130 PetriNetUnfolder]: 202/761 cut-off events. [2022-12-05 19:42:02,894 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-12-05 19:42:02,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 761 events. 202/761 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3239 event pairs, 103 based on Foata normal form. 12/616 useless extension candidates. Maximal degree in co-relation 803. Up to 344 conditions per place. [2022-12-05 19:42:02,907 INFO L137 encePairwiseOnDemand]: 244/280 looper letters, 91 selfloop transitions, 15 changer transitions 12/261 dead transitions. [2022-12-05 19:42:02,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 261 transitions, 776 flow [2022-12-05 19:42:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 19:42:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 19:42:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1382 transitions. [2022-12-05 19:42:02,925 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6169642857142857 [2022-12-05 19:42:02,927 INFO L175 Difference]: Start difference. First operand has 250 places, 267 transitions, 552 flow. Second operand 8 states and 1382 transitions. [2022-12-05 19:42:02,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 261 transitions, 776 flow [2022-12-05 19:42:02,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 261 transitions, 764 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 19:42:02,941 INFO L231 Difference]: Finished difference. Result has 252 places, 240 transitions, 534 flow [2022-12-05 19:42:02,943 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=534, PETRI_PLACES=252, PETRI_TRANSITIONS=240} [2022-12-05 19:42:02,949 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 2 predicate places. [2022-12-05 19:42:02,949 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 240 transitions, 534 flow [2022-12-05 19:42:02,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 164.625) internal successors, (1317), 8 states have internal predecessors, (1317), 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) [2022-12-05 19:42:02,950 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:02,951 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:02,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:42:02,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash -232449454, now seen corresponding path program 1 times [2022-12-05 19:42:02,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:02,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512421389] [2022-12-05 19:42:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:02,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:42:03,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:03,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512421389] [2022-12-05 19:42:03,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512421389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:42:03,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:42:03,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-05 19:42:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381936389] [2022-12-05 19:42:03,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:42:03,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-05 19:42:03,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-05 19:42:03,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2022-12-05 19:42:03,799 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 280 [2022-12-05 19:42:03,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 240 transitions, 534 flow. Second operand has 21 states, 21 states have (on average 139.85714285714286) internal successors, (2937), 21 states have internal predecessors, (2937), 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) [2022-12-05 19:42:03,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:03,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 280 [2022-12-05 19:42:03,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:04,885 INFO L130 PetriNetUnfolder]: 759/2464 cut-off events. [2022-12-05 19:42:04,885 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-12-05 19:42:04,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 2464 events. 759/2464 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 17739 event pairs, 101 based on Foata normal form. 2/2120 useless extension candidates. Maximal degree in co-relation 3401. Up to 282 conditions per place. [2022-12-05 19:42:04,905 INFO L137 encePairwiseOnDemand]: 250/280 looper letters, 146 selfloop transitions, 31 changer transitions 20/323 dead transitions. [2022-12-05 19:42:04,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 323 transitions, 1105 flow [2022-12-05 19:42:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-05 19:42:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-05 19:42:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4518 transitions. [2022-12-05 19:42:04,954 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5042410714285714 [2022-12-05 19:42:04,954 INFO L175 Difference]: Start difference. First operand has 252 places, 240 transitions, 534 flow. Second operand 32 states and 4518 transitions. [2022-12-05 19:42:04,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 323 transitions, 1105 flow [2022-12-05 19:42:04,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 323 transitions, 1081 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 19:42:04,960 INFO L231 Difference]: Finished difference. Result has 272 places, 251 transitions, 635 flow [2022-12-05 19:42:04,961 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=635, PETRI_PLACES=272, PETRI_TRANSITIONS=251} [2022-12-05 19:42:04,962 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 22 predicate places. [2022-12-05 19:42:04,962 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 251 transitions, 635 flow [2022-12-05 19:42:04,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 139.85714285714286) internal successors, (2937), 21 states have internal predecessors, (2937), 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) [2022-12-05 19:42:04,963 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:04,963 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:04,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:42:04,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2032496315, now seen corresponding path program 1 times [2022-12-05 19:42:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:04,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150329445] [2022-12-05 19:42:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:04,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:42:05,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:05,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150329445] [2022-12-05 19:42:05,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150329445] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664255028] [2022-12-05 19:42:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:05,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:05,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:05,175 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) [2022-12-05 19:42:05,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:42:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:05,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:42:05,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:42:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:42:05,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:42:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:42:05,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664255028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:42:05,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:42:05,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-05 19:42:05,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930116079] [2022-12-05 19:42:05,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:42:05,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 19:42:05,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 19:42:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:42:05,856 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 280 [2022-12-05 19:42:05,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 251 transitions, 635 flow. Second operand has 19 states, 19 states have (on average 205.26315789473685) internal successors, (3900), 19 states have internal predecessors, (3900), 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) [2022-12-05 19:42:05,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:05,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 280 [2022-12-05 19:42:05,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:06,678 INFO L130 PetriNetUnfolder]: 1489/3714 cut-off events. [2022-12-05 19:42:06,678 INFO L131 PetriNetUnfolder]: For 445/539 co-relation queries the response was YES. [2022-12-05 19:42:06,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 3714 events. 1489/3714 cut-off events. For 445/539 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24218 event pairs, 585 based on Foata normal form. 6/2827 useless extension candidates. Maximal degree in co-relation 6291. Up to 1092 conditions per place. [2022-12-05 19:42:06,701 INFO L137 encePairwiseOnDemand]: 251/280 looper letters, 133 selfloop transitions, 54 changer transitions 0/373 dead transitions. [2022-12-05 19:42:06,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 373 transitions, 1307 flow [2022-12-05 19:42:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:42:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:42:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4207 transitions. [2022-12-05 19:42:06,708 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.75125 [2022-12-05 19:42:06,708 INFO L175 Difference]: Start difference. First operand has 272 places, 251 transitions, 635 flow. Second operand 20 states and 4207 transitions. [2022-12-05 19:42:06,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 373 transitions, 1307 flow [2022-12-05 19:42:06,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 373 transitions, 1263 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-12-05 19:42:06,718 INFO L231 Difference]: Finished difference. Result has 272 places, 288 transitions, 906 flow [2022-12-05 19:42:06,719 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=906, PETRI_PLACES=272, PETRI_TRANSITIONS=288} [2022-12-05 19:42:06,720 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 22 predicate places. [2022-12-05 19:42:06,720 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 288 transitions, 906 flow [2022-12-05 19:42:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 205.26315789473685) internal successors, (3900), 19 states have internal predecessors, (3900), 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) [2022-12-05 19:42:06,722 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:06,722 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:06,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 19:42:06,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:06,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1468673346, now seen corresponding path program 1 times [2022-12-05 19:42:06,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:06,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372856817] [2022-12-05 19:42:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:06,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:42:07,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:07,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372856817] [2022-12-05 19:42:07,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372856817] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:07,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42771660] [2022-12-05 19:42:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:07,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:07,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:07,111 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) [2022-12-05 19:42:07,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:42:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:42:07,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:42:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:42:07,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:42:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:42:07,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42771660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:42:07,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:42:07,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-05 19:42:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162596906] [2022-12-05 19:42:07,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:42:07,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 19:42:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 19:42:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:42:07,644 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 280 [2022-12-05 19:42:07,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 288 transitions, 906 flow. Second operand has 19 states, 19 states have (on average 202.52631578947367) internal successors, (3848), 19 states have internal predecessors, (3848), 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) [2022-12-05 19:42:07,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:07,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 280 [2022-12-05 19:42:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:08,559 INFO L130 PetriNetUnfolder]: 1561/3863 cut-off events. [2022-12-05 19:42:08,559 INFO L131 PetriNetUnfolder]: For 1483/1604 co-relation queries the response was YES. [2022-12-05 19:42:08,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7635 conditions, 3863 events. 1561/3863 cut-off events. For 1483/1604 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 25714 event pairs, 773 based on Foata normal form. 35/3266 useless extension candidates. Maximal degree in co-relation 6321. Up to 1568 conditions per place. [2022-12-05 19:42:08,584 INFO L137 encePairwiseOnDemand]: 251/280 looper letters, 72 selfloop transitions, 30 changer transitions 89/374 dead transitions. [2022-12-05 19:42:08,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 374 transitions, 1574 flow [2022-12-05 19:42:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:42:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:42:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4147 transitions. [2022-12-05 19:42:08,597 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7405357142857143 [2022-12-05 19:42:08,597 INFO L175 Difference]: Start difference. First operand has 272 places, 288 transitions, 906 flow. Second operand 20 states and 4147 transitions. [2022-12-05 19:42:08,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 374 transitions, 1574 flow [2022-12-05 19:42:08,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 374 transitions, 1537 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-12-05 19:42:08,606 INFO L231 Difference]: Finished difference. Result has 292 places, 263 transitions, 804 flow [2022-12-05 19:42:08,607 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=804, PETRI_PLACES=292, PETRI_TRANSITIONS=263} [2022-12-05 19:42:08,607 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 42 predicate places. [2022-12-05 19:42:08,607 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 263 transitions, 804 flow [2022-12-05 19:42:08,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 202.52631578947367) internal successors, (3848), 19 states have internal predecessors, (3848), 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) [2022-12-05 19:42:08,609 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:08,609 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:08,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 19:42:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-05 19:42:08,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1413811203, now seen corresponding path program 2 times [2022-12-05 19:42:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:08,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310354074] [2022-12-05 19:42:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-05 19:42:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310354074] [2022-12-05 19:42:09,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310354074] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104111010] [2022-12-05 19:42:09,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:42:09,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:09,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:09,081 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) [2022-12-05 19:42:09,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:42:09,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:42:09,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:42:09,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:42:09,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:42:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-05 19:42:09,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:42:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-05 19:42:09,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104111010] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:09,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:42:09,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-12-05 19:42:09,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231630905] [2022-12-05 19:42:09,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:42:09,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 19:42:09,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 19:42:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:42:09,576 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-12-05 19:42:09,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 263 transitions, 804 flow. Second operand has 9 states, 9 states have (on average 208.55555555555554) internal successors, (1877), 9 states have internal predecessors, (1877), 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) [2022-12-05 19:42:09,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:09,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-12-05 19:42:09,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:09,990 INFO L130 PetriNetUnfolder]: 922/2376 cut-off events. [2022-12-05 19:42:09,990 INFO L131 PetriNetUnfolder]: For 1696/1742 co-relation queries the response was YES. [2022-12-05 19:42:09,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 2376 events. 922/2376 cut-off events. For 1696/1742 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15650 event pairs, 351 based on Foata normal form. 4/2061 useless extension candidates. Maximal degree in co-relation 4885. Up to 717 conditions per place. [2022-12-05 19:42:10,008 INFO L137 encePairwiseOnDemand]: 269/280 looper letters, 78 selfloop transitions, 10 changer transitions 0/275 dead transitions. [2022-12-05 19:42:10,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 275 transitions, 1032 flow [2022-12-05 19:42:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:42:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:42:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2094 transitions. [2022-12-05 19:42:10,013 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7478571428571429 [2022-12-05 19:42:10,013 INFO L175 Difference]: Start difference. First operand has 292 places, 263 transitions, 804 flow. Second operand 10 states and 2094 transitions. [2022-12-05 19:42:10,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 275 transitions, 1032 flow [2022-12-05 19:42:10,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 275 transitions, 951 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-12-05 19:42:10,021 INFO L231 Difference]: Finished difference. Result has 268 places, 265 transitions, 772 flow [2022-12-05 19:42:10,021 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=772, PETRI_PLACES=268, PETRI_TRANSITIONS=265} [2022-12-05 19:42:10,023 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 18 predicate places. [2022-12-05 19:42:10,023 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 265 transitions, 772 flow [2022-12-05 19:42:10,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 208.55555555555554) internal successors, (1877), 9 states have internal predecessors, (1877), 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) [2022-12-05 19:42:10,024 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:10,024 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:10,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-05 19:42:10,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:10,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1734004931, now seen corresponding path program 1 times [2022-12-05 19:42:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748722839] [2022-12-05 19:42:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 19:42:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:10,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748722839] [2022-12-05 19:42:10,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748722839] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:10,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554583422] [2022-12-05 19:42:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:10,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:10,480 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) [2022-12-05 19:42:10,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:42:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:10,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:42:10,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:42:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 19:42:10,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:42:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 19:42:11,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554583422] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:11,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:42:11,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-12-05 19:42:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096445632] [2022-12-05 19:42:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:42:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 19:42:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 19:42:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:42:11,067 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 280 [2022-12-05 19:42:11,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 265 transitions, 772 flow. Second operand has 9 states, 9 states have (on average 204.77777777777777) internal successors, (1843), 9 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) [2022-12-05 19:42:11,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:11,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 280 [2022-12-05 19:42:11,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:11,530 INFO L130 PetriNetUnfolder]: 1352/3154 cut-off events. [2022-12-05 19:42:11,531 INFO L131 PetriNetUnfolder]: For 1676/2026 co-relation queries the response was YES. [2022-12-05 19:42:11,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 3154 events. 1352/3154 cut-off events. For 1676/2026 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21767 event pairs, 315 based on Foata normal form. 379/3317 useless extension candidates. Maximal degree in co-relation 6833. Up to 1235 conditions per place. [2022-12-05 19:42:11,546 INFO L137 encePairwiseOnDemand]: 269/280 looper letters, 85 selfloop transitions, 10 changer transitions 0/278 dead transitions. [2022-12-05 19:42:11,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 278 transitions, 1012 flow [2022-12-05 19:42:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:42:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:42:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2059 transitions. [2022-12-05 19:42:11,550 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7353571428571428 [2022-12-05 19:42:11,550 INFO L175 Difference]: Start difference. First operand has 268 places, 265 transitions, 772 flow. Second operand 10 states and 2059 transitions. [2022-12-05 19:42:11,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 278 transitions, 1012 flow [2022-12-05 19:42:11,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 278 transitions, 1001 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-05 19:42:11,560 INFO L231 Difference]: Finished difference. Result has 275 places, 266 transitions, 795 flow [2022-12-05 19:42:11,561 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=795, PETRI_PLACES=275, PETRI_TRANSITIONS=266} [2022-12-05 19:42:11,564 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 25 predicate places. [2022-12-05 19:42:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 266 transitions, 795 flow [2022-12-05 19:42:11,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 204.77777777777777) internal successors, (1843), 9 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) [2022-12-05 19:42:11,564 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:11,565 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:11,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:42:11,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:11,770 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:11,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2075390340, now seen corresponding path program 1 times [2022-12-05 19:42:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:11,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4418418] [2022-12-05 19:42:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:11,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 19:42:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:11,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4418418] [2022-12-05 19:42:11,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4418418] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:11,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553894529] [2022-12-05 19:42:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:11,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:11,979 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) [2022-12-05 19:42:11,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:42:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:12,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:42:12,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:42:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 19:42:12,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:42:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 19:42:12,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553894529] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:12,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:42:12,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-12-05 19:42:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176513937] [2022-12-05 19:42:12,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:42:12,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 19:42:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 19:42:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:42:12,562 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 280 [2022-12-05 19:42:12,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 266 transitions, 795 flow. Second operand has 9 states, 9 states have (on average 207.66666666666666) internal successors, (1869), 9 states have internal predecessors, (1869), 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) [2022-12-05 19:42:12,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:12,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 280 [2022-12-05 19:42:12,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:42:12,879 INFO L130 PetriNetUnfolder]: 778/1808 cut-off events. [2022-12-05 19:42:12,879 INFO L131 PetriNetUnfolder]: For 1488/1900 co-relation queries the response was YES. [2022-12-05 19:42:12,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4097 conditions, 1808 events. 778/1808 cut-off events. For 1488/1900 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10341 event pairs, 159 based on Foata normal form. 437/2056 useless extension candidates. Maximal degree in co-relation 3987. Up to 756 conditions per place. [2022-12-05 19:42:12,890 INFO L137 encePairwiseOnDemand]: 269/280 looper letters, 81 selfloop transitions, 10 changer transitions 0/275 dead transitions. [2022-12-05 19:42:12,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 275 transitions, 1009 flow [2022-12-05 19:42:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:42:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:42:12,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2085 transitions. [2022-12-05 19:42:12,893 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7446428571428572 [2022-12-05 19:42:12,893 INFO L175 Difference]: Start difference. First operand has 275 places, 266 transitions, 795 flow. Second operand 10 states and 2085 transitions. [2022-12-05 19:42:12,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 275 transitions, 1009 flow [2022-12-05 19:42:12,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 275 transitions, 992 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 19:42:12,899 INFO L231 Difference]: Finished difference. Result has 277 places, 265 transitions, 803 flow [2022-12-05 19:42:12,899 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=803, PETRI_PLACES=277, PETRI_TRANSITIONS=265} [2022-12-05 19:42:12,900 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 27 predicate places. [2022-12-05 19:42:12,900 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 265 transitions, 803 flow [2022-12-05 19:42:12,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.66666666666666) internal successors, (1869), 9 states have internal predecessors, (1869), 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) [2022-12-05 19:42:12,901 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:42:12,901 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:42:12,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-05 19:42:13,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:13,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:42:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:42:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1777038154, now seen corresponding path program 1 times [2022-12-05 19:42:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:42:13,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659142264] [2022-12-05 19:42:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:42:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:42:16,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:42:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659142264] [2022-12-05 19:42:16,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659142264] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:42:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141648381] [2022-12-05 19:42:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:42:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:42:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:42:16,631 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) [2022-12-05 19:42:16,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 19:42:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:42:16,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-05 19:42:16,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:42:17,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:42:17,126 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 25 [2022-12-05 19:42:18,301 INFO L321 Elim1Store]: treesize reduction 36, result has 56.6 percent of original size [2022-12-05 19:42:18,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 53 treesize of output 71 [2022-12-05 19:42:19,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:42:19,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 219 [2022-12-05 19:42:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-05 19:42:19,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:42:30,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:42:30,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 87 [2022-12-05 19:42:30,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-05 19:42:30,529 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:42:30,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2022-12-05 19:42:30,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:42:30,574 INFO L350 Elim1Store]: Elim1 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 78 treesize of output 126 [2022-12-05 19:42:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-05 19:42:31,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141648381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:42:31,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:42:31,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 32, 29] total 105 [2022-12-05 19:42:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943684928] [2022-12-05 19:42:31,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:42:31,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-12-05 19:42:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:42:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-12-05 19:42:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=10491, Unknown=1, NotChecked=0, Total=10920 [2022-12-05 19:42:31,577 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 280 [2022-12-05 19:42:31,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 265 transitions, 803 flow. Second operand has 105 states, 105 states have (on average 66.81904761904762) internal successors, (7016), 105 states have internal predecessors, (7016), 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) [2022-12-05 19:42:31,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:42:31,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 280 [2022-12-05 19:42:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:43:07,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:43:26,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:43:54,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-05 19:44:41,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-05 19:44:43,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-05 19:44:56,083 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 122 DAG size of output: 111 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:45:51,732 INFO L130 PetriNetUnfolder]: 108784/169725 cut-off events. [2022-12-05 19:45:51,732 INFO L131 PetriNetUnfolder]: For 126845/126845 co-relation queries the response was YES. [2022-12-05 19:45:52,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425017 conditions, 169725 events. 108784/169725 cut-off events. For 126845/126845 co-relation queries the response was YES. Maximal size of possible extension queue 3612. Compared 1491453 event pairs, 10482 based on Foata normal form. 6/159439 useless extension candidates. Maximal degree in co-relation 424883. Up to 17424 conditions per place. [2022-12-05 19:45:53,293 INFO L137 encePairwiseOnDemand]: 183/280 looper letters, 2290 selfloop transitions, 1138 changer transitions 120/3599 dead transitions. [2022-12-05 19:45:53,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 3599 transitions, 18978 flow [2022-12-05 19:45:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2022-12-05 19:45:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2022-12-05 19:45:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 24388 transitions. [2022-12-05 19:45:53,325 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2615615615615616 [2022-12-05 19:45:53,325 INFO L175 Difference]: Start difference. First operand has 277 places, 265 transitions, 803 flow. Second operand 333 states and 24388 transitions. [2022-12-05 19:45:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 3599 transitions, 18978 flow [2022-12-05 19:45:55,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 3599 transitions, 18770 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 19:45:55,639 INFO L231 Difference]: Finished difference. Result has 741 places, 1527 transitions, 9614 flow [2022-12-05 19:45:55,639 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=333, PETRI_FLOW=9614, PETRI_PLACES=741, PETRI_TRANSITIONS=1527} [2022-12-05 19:45:55,640 INFO L294 CegarLoopForPetriNet]: 250 programPoint places, 491 predicate places. [2022-12-05 19:45:55,640 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 1527 transitions, 9614 flow [2022-12-05 19:45:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 66.81904761904762) internal successors, (7016), 105 states have internal predecessors, (7016), 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) [2022-12-05 19:45:55,642 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:45:55,642 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:45:55,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 19:45:55,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:45:55,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 19:45:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:45:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash -841877266, now seen corresponding path program 2 times [2022-12-05 19:45:55,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:45:55,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939079279] [2022-12-05 19:45:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:45:55,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:45:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:45:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-05 19:45:59,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:45:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939079279] [2022-12-05 19:45:59,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939079279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:45:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729679664] [2022-12-05 19:45:59,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:45:59,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:45:59,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:45:59,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:45:59,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 19:45:59,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:45:59,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:45:59,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-05 19:45:59,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:46:00,487 INFO L350 Elim1Store]: Elim1 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 [2022-12-05 19:46:00,908 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-12-05 19:46:01,416 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 19:46:01,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-05 19:46:01,632 INFO L350 Elim1Store]: Elim1 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 [2022-12-05 19:46:01,748 INFO L350 Elim1Store]: Elim1 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 [2022-12-05 19:46:03,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:46:03,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:46:03,915 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-05 19:46:03,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-12-05 19:46:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:46:04,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:46:04,148 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-05 19:46:04,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-12-05 19:46:04,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:46:04,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:46:04,690 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-05 19:46:04,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2022-12-05 19:46:05,109 INFO L321 Elim1Store]: treesize reduction 72, result has 62.7 percent of original size [2022-12-05 19:46:05,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 154 [2022-12-05 19:46:53,522 WARN L233 SmtUtils]: Spent 31.77s on a formula simplification. DAG size of input: 263 DAG size of output: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:47:05,763 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:47:36,984 WARN L233 SmtUtils]: Spent 9.26s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:50:30,959 WARN L233 SmtUtils]: Spent 2.85m on a formula simplification that was a NOOP. DAG size: 3590 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-05 19:50:30,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:50:30,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 43 select indices, 43 select index equivalence classes, 0 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 903 case distinctions, treesize of input 1381 treesize of output 12111 Received shutdown request... [2022-12-05 19:55:46,248 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 19:55:46,248 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 19:55:46,334 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-05 19:55:46,336 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 19:55:46,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 19:55:46,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:55:46,537 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 248 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 97ms.. [2022-12-05 19:55:46,538 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 19:55:46,538 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 19:55:46,538 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 19:55:46,538 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-12-05 19:55:46,541 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 19:55:46,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 19:55:46,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 07:55:46 BasicIcfg [2022-12-05 19:55:46,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 19:55:46,545 INFO L158 Benchmark]: Toolchain (without parser) took 826162.78ms. Allocated memory was 184.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 160.6MB in the beginning and 550.1MB in the end (delta: -389.5MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2022-12-05 19:55:46,545 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 19:55:46,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.95ms. Allocated memory is still 184.5MB. Free memory was 160.6MB in the beginning and 147.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 19:55:46,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.22ms. Allocated memory is still 184.5MB. Free memory was 147.0MB in the beginning and 144.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:55:46,546 INFO L158 Benchmark]: Boogie Preprocessor took 27.41ms. Allocated memory is still 184.5MB. Free memory was 144.9MB in the beginning and 142.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 19:55:46,546 INFO L158 Benchmark]: RCFGBuilder took 789.06ms. Allocated memory is still 184.5MB. Free memory was 142.3MB in the beginning and 111.3MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-12-05 19:55:46,546 INFO L158 Benchmark]: TraceAbstraction took 825102.84ms. Allocated memory was 184.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 110.8MB in the beginning and 550.1MB in the end (delta: -439.3MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-12-05 19:55:46,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.95ms. Allocated memory is still 184.5MB. Free memory was 160.6MB in the beginning and 147.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.22ms. Allocated memory is still 184.5MB. Free memory was 147.0MB in the beginning and 144.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.41ms. Allocated memory is still 184.5MB. Free memory was 144.9MB in the beginning and 142.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 789.06ms. Allocated memory is still 184.5MB. Free memory was 142.3MB in the beginning and 111.3MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 825102.84ms. Allocated memory was 184.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 110.8MB in the beginning and 550.1MB in the end (delta: -439.3MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 248 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 97ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 248 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 97ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 248 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 97ms.. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 248 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 97ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 299 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 825.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 208.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 15813 SdHoareTripleChecker+Valid, 29.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15813 mSDsluCounter, 12835 SdHoareTripleChecker+Invalid, 27.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12312 mSDsCounter, 452 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23023 IncrementalHoareTripleChecker+Invalid, 23487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 452 mSolverCounterUnsat, 523 mSDtfsCounter, 23023 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3312 GetRequests, 2681 SyntacticMatches, 10 SemanticMatches, 621 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72869 ImplicationChecksByTransitivity, 160.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9614occurred in iteration=8, InterpolantAutomatonStates: 443, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 3161 NumberOfCodeBlocks, 3161 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4528 ConstructedInterpolants, 31 QuantifiedInterpolants, 18732 SizeOfPredicates, 89 NumberOfNonLiveVariables, 3164 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 277/375 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown