/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-MCRwithoutDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 17:57:18,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 17:57:18,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 17:57:18,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-16 17:57:18,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-16 17:57:18,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-16 17:57:18,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-16 17:57:18,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-16 17:57:18,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-16 17:57:18,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-16 17:57:18,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-16 17:57:18,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-16 17:57:18,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-16 17:57:18,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-16 17:57:18,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-16 17:57:18,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-16 17:57:18,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-16 17:57:18,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-16 17:57:18,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-16 17:57:18,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-16 17:57:18,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-16 17:57:18,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-16 17:57:18,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-16 17:57:18,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-16 17:57:18,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-16 17:57:18,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-16 17:57:18,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-16 17:57:18,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-16 17:57:18,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-16 17:57:18,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-16 17:57:18,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-16 17:57:18,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-16 17:57:18,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-16 17:57:18,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-16 17:57:18,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-16 17:57:18,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-16 17:57:18,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-16 17:57:18,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-16 17:57:18,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 17:57:18,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 17:57:18,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 17:57:18,641 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-MCRwithoutDepranks.epf [2022-02-16 17:57:18,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 17:57:18,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 17:57:18,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 17:57:18,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 17:57:18,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 17:57:18,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 17:57:18,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 17:57:18,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 17:57:18,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 17:57:18,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 17:57:18,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 17:57:18,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 17:57:18,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 17:57:18,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 17:57:18,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 17:57:18,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 17:57:18,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 17:57:18,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 17:57:18,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 17:57:18,661 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-16 17:57:18,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 17:57:18,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 17:57:18,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 17:57:18,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 17:57:18,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 17:57:18,853 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 17:57:18,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-02-16 17:57:18,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71162d66/e8c33da807bd48749806ca8c57d8aa49/FLAG1acc22285 [2022-02-16 17:57:19,298 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 17:57:19,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-02-16 17:57:19,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71162d66/e8c33da807bd48749806ca8c57d8aa49/FLAG1acc22285 [2022-02-16 17:57:19,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71162d66/e8c33da807bd48749806ca8c57d8aa49 [2022-02-16 17:57:19,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 17:57:19,320 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 17:57:19,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 17:57:19,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 17:57:19,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 17:57:19,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a828f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19, skipping insertion in model container [2022-02-16 17:57:19,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 17:57:19,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 17:57:19,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-02-16 17:57:19,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 17:57:19,496 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 17:57:19,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-02-16 17:57:19,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 17:57:19,527 INFO L208 MainTranslator]: Completed translation [2022-02-16 17:57:19,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19 WrapperNode [2022-02-16 17:57:19,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 17:57:19,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 17:57:19,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 17:57:19,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 17:57:19,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,555 INFO L137 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-02-16 17:57:19,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 17:57:19,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 17:57:19,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 17:57:19,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 17:57:19,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 17:57:19,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 17:57:19,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 17:57:19,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 17:57:19,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (1/1) ... [2022-02-16 17:57:19,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 17:57:19,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 17:57:19,626 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) [2022-02-16 17:57:19,644 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 [2022-02-16 17:57:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-16 17:57:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-16 17:57:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-16 17:57:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-16 17:57:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-16 17:57:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-16 17:57:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-16 17:57:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 17:57:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-16 17:57:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 17:57:19,659 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 17:57:19,718 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 17:57:19,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 17:57:19,899 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 17:57:19,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 17:57:19,917 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-16 17:57:19,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:57:19 BoogieIcfgContainer [2022-02-16 17:57:19,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 17:57:19,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 17:57:19,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 17:57:19,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 17:57:19,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 05:57:19" (1/3) ... [2022-02-16 17:57:19,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac7d6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:57:19, skipping insertion in model container [2022-02-16 17:57:19,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:57:19" (2/3) ... [2022-02-16 17:57:19,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac7d6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:57:19, skipping insertion in model container [2022-02-16 17:57:19,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:57:19" (3/3) ... [2022-02-16 17:57:19,927 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-02-16 17:57:19,930 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 17:57:19,930 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 17:57:19,930 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 17:57:19,931 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 17:57:19,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,968 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,968 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,968 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,968 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,968 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,969 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,970 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,970 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,975 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,979 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,979 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 17:57:19,983 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-16 17:57:20,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 17:57:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 17:57:20,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 17:57:20,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 17:57:20,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 17:57:20,059 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 17:57:20,059 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-16 17:57:20,067 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 105 transitions, 234 flow [2022-02-16 17:57:20,185 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2434 states, 2433 states have (on average 3.629264282778463) internal successors, (8830), 2433 states have internal predecessors, (8830), 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) [2022-02-16 17:57:20,366 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 125 transitions and produced 126 states. [2022-02-16 17:57:20,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 17:57:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 17:57:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1449306712, now seen corresponding path program 1 times [2022-02-16 17:57:20,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 17:57:20,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965127810] [2022-02-16 17:57:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:20,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 17:57:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 17:57:20,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 17:57:20,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965127810] [2022-02-16 17:57:20,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965127810] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 17:57:20,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 17:57:20,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 17:57:20,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973769186] [2022-02-16 17:57:20,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 17:57:20,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-16 17:57:20,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 17:57:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-16 17:57:20,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-16 17:57:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:20,621 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 17:57:20,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2022-02-16 17:57:20,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:20,775 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 125 transitions and produced 126 states. [2022-02-16 17:57:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:20,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 17:57:20,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 17:57:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 17:57:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -519419097, now seen corresponding path program 1 times [2022-02-16 17:57:20,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 17:57:20,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558144542] [2022-02-16 17:57:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:20,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 17:57:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 17:57:21,100 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 17:57:21,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558144542] [2022-02-16 17:57:21,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558144542] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 17:57:21,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 17:57:21,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-16 17:57:21,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50928442] [2022-02-16 17:57:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 17:57:21,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-16 17:57:21,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 17:57:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-16 17:57:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-16 17:57:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:21,104 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 17:57:21,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2022-02-16 17:57:21,105 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:21,105 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:22,994 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 329 transitions and produced 325 states. [2022-02-16 17:57:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:57:22,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 17:57:22,995 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 17:57:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 17:57:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 787804558, now seen corresponding path program 1 times [2022-02-16 17:57:22,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 17:57:22,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828766324] [2022-02-16 17:57:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:22,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 17:57:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-02-16 17:57:23,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 17:57:23,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828766324] [2022-02-16 17:57:23,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828766324] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 17:57:23,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 17:57:23,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-16 17:57:23,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427558772] [2022-02-16 17:57:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 17:57:23,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 17:57:23,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 17:57:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 17:57:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-16 17:57:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:23,157 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 17:57:23,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2022-02-16 17:57:23,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:23,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:57:23,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:25,844 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 528 transitions and produced 524 states. [2022-02-16 17:57:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:57:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 17:57:25,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-16 17:57:25,845 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 17:57:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 17:57:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2002194596, now seen corresponding path program 1 times [2022-02-16 17:57:25,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 17:57:25,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492951368] [2022-02-16 17:57:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:25,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 17:57:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 595 proven. 9 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-02-16 17:57:26,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 17:57:26,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492951368] [2022-02-16 17:57:26,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492951368] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 17:57:26,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202940399] [2022-02-16 17:57:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:26,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 17:57:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 17:57:26,119 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) [2022-02-16 17:57:26,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-16 17:57:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:26,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-16 17:57:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 17:57:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 500 proven. 104 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-02-16 17:57:26,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 17:57:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 504 proven. 100 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-02-16 17:57:26,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202940399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 17:57:26,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 17:57:26,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-02-16 17:57:26,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482604635] [2022-02-16 17:57:26,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 17:57:26,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-16 17:57:26,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 17:57:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-16 17:57:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-02-16 17:57:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:26,852 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 17:57:26,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2022-02-16 17:57:26,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:26,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:57:26,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 17:57:26,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:42,619 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2447 transitions and produced 2372 states. [2022-02-16 17:57:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:57:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 17:57:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-16 17:57:42,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-16 17:57:42,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-02-16 17:57:42,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 17:57:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 17:57:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1526198430, now seen corresponding path program 1 times [2022-02-16 17:57:42,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 17:57:42,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161421329] [2022-02-16 17:57:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:42,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 17:57:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22882 backedges. 11602 proven. 472 refuted. 0 times theorem prover too weak. 10808 trivial. 0 not checked. [2022-02-16 17:57:43,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 17:57:43,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161421329] [2022-02-16 17:57:43,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161421329] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 17:57:43,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710428279] [2022-02-16 17:57:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:57:43,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 17:57:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 17:57:43,593 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) [2022-02-16 17:57:43,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-16 17:57:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:57:43,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-16 17:57:43,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 17:57:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 22882 backedges. 11510 proven. 619 refuted. 0 times theorem prover too weak. 10753 trivial. 0 not checked. [2022-02-16 17:57:44,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 17:57:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22882 backedges. 11602 proven. 472 refuted. 0 times theorem prover too weak. 10808 trivial. 0 not checked. [2022-02-16 17:57:45,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710428279] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 17:57:45,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 17:57:45,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-02-16 17:57:45,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889625901] [2022-02-16 17:57:45,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 17:57:45,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-16 17:57:45,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 17:57:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-16 17:57:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-16 17:57:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:45,146 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 17:57:45,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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) [2022-02-16 17:57:45,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:57:45,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:57:45,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 17:57:45,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-16 17:57:45,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:58:05,101 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2864 transitions and produced 2818 states. [2022-02-16 17:58:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:58:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:58:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 17:58:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-16 17:58:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-16 17:58:05,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-16 17:58:05,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 17:58:05,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-16 17:58:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 17:58:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash -304840619, now seen corresponding path program 1 times [2022-02-16 17:58:05,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 17:58:05,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718709623] [2022-02-16 17:58:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:58:05,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 17:58:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:58:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 33378 backedges. 14439 proven. 9945 refuted. 0 times theorem prover too weak. 8994 trivial. 0 not checked. [2022-02-16 17:58:06,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 17:58:06,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718709623] [2022-02-16 17:58:06,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718709623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 17:58:06,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036943889] [2022-02-16 17:58:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 17:58:06,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 17:58:06,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 17:58:06,552 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) [2022-02-16 17:58:06,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-16 17:58:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 17:58:06,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 143 conjunts are in the unsatisfiable core [2022-02-16 17:58:06,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 17:58:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 33378 backedges. 13743 proven. 10874 refuted. 0 times theorem prover too weak. 8761 trivial. 0 not checked. [2022-02-16 17:58:07,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 17:58:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 33378 backedges. 14491 proven. 10038 refuted. 0 times theorem prover too weak. 8849 trivial. 0 not checked. [2022-02-16 17:58:09,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036943889] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 17:58:09,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 17:58:09,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 27 [2022-02-16 17:58:09,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621548133] [2022-02-16 17:58:09,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 17:58:09,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-16 17:58:09,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 17:58:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-16 17:58:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-02-16 17:58:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:58:09,268 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 17:58:09,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.518518518518518) internal successors, (203), 27 states have internal predecessors, (203), 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) [2022-02-16 17:58:09,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 17:58:09,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-02-16 17:58:09,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 17:58:09,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-16 17:58:09,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-16 17:58:09,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.