/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:19:27,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:19:27,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:19:27,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-03 17:19:27,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-03 17:19:27,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-03 17:19:27,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-03 17:19:27,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-03 17:19:27,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-03 17:19:27,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-03 17:19:27,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-03 17:19:27,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-03 17:19:27,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-03 17:19:27,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-03 17:19:27,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-03 17:19:27,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-03 17:19:27,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-03 17:19:27,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-03 17:19:27,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-03 17:19:27,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-03 17:19:27,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-03 17:19:27,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-03 17:19:27,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-03 17:19:27,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-03 17:19:27,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-03 17:19:27,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-03 17:19:27,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-03 17:19:27,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-03 17:19:27,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-03 17:19:27,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-03 17:19:27,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-03 17:19:27,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-03 17:19:27,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-03 17:19:27,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-03 17:19:27,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-03 17:19:27,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-03 17:19:27,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-03 17:19:27,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-03 17:19:27,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:19:27,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:19:27,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:19:27,604 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-FA-NoLbe.epf [2022-03-03 17:19:27,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:19:27,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:19:27,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:19:27,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:19:27,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:19:27,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:19:27,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:19:27,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:19:27,637 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:19:27,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:19:27,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:19:27,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:19:27,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:19:27,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:19:27,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:19:27,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:19:27,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:19:27,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:19:27,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:19:27,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:19:27,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:19:27,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:19:27,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:19:27,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:19:27,642 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:19:27,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:19:27,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:19:27,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:19:27,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:19:27,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:19:27,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:19:27,922 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:19:27,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2022-03-03 17:19:27,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3e12db1/8739ae1db717404aaeff95bbc06fcf84/FLAG1a7a93c12 [2022-03-03 17:19:28,430 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:19:28,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2022-03-03 17:19:28,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3e12db1/8739ae1db717404aaeff95bbc06fcf84/FLAG1a7a93c12 [2022-03-03 17:19:28,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3e12db1/8739ae1db717404aaeff95bbc06fcf84 [2022-03-03 17:19:28,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:19:28,454 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:19:28,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:19:28,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:19:28,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:19:28,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4274ab24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28, skipping insertion in model container [2022-03-03 17:19:28,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:19:28,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:19:28,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-03-03 17:19:28,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:19:28,653 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:19:28,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-03-03 17:19:28,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:19:28,688 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:19:28,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28 WrapperNode [2022-03-03 17:19:28,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:19:28,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:19:28,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:19:28,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:19:28,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,737 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 193 [2022-03-03 17:19:28,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:19:28,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:19:28,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:19:28,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:19:28,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:19:28,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:19:28,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:19:28,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:19:28,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (1/1) ... [2022-03-03 17:19:28,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:19:28,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:28,804 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) [2022-03-03 17:19:28,834 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 [2022-03-03 17:19:28,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:19:28,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:19:28,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:19:28,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:19:28,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:19:28,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:19:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:19:28,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:19:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:19:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:19:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:19:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:19:28,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:19:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:19:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:19:28,857 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:19:28,963 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:19:28,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:19:29,340 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:19:29,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:19:29,491 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-03 17:19:29,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:19:29 BoogieIcfgContainer [2022-03-03 17:19:29,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:19:29,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:19:29,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:19:29,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:19:29,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:19:28" (1/3) ... [2022-03-03 17:19:29,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ebf9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:19:29, skipping insertion in model container [2022-03-03 17:19:29,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:19:28" (2/3) ... [2022-03-03 17:19:29,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ebf9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:19:29, skipping insertion in model container [2022-03-03 17:19:29,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:19:29" (3/3) ... [2022-03-03 17:19:29,502 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2022-03-03 17:19:29,507 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:19:29,507 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:19:29,507 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:19:29,507 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:19:29,556 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,557 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,557 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,557 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,569 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,569 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,569 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,570 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,571 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,571 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,571 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,571 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,572 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,572 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,572 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,572 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,572 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,573 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,573 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,573 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,573 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,573 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,573 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,574 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,574 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,574 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,575 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,575 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,576 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,577 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,577 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,578 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,578 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,578 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,578 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,579 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,579 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,579 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,579 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:19:29,606 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:19:29,655 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:19:29,665 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=FINITE_AUTOMATA, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:19:29,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:19:29,681 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 159 places, 165 transitions, 346 flow [2022-03-03 17:19:29,751 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 518 states, 517 states have (on average 2.4294003868471954) internal successors, (1256), 517 states have internal predecessors, (1256), 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) [2022-03-03 17:19:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 518 states, 517 states have (on average 2.4294003868471954) internal successors, (1256), 517 states have internal predecessors, (1256), 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) [2022-03-03 17:19:29,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-03 17:19:29,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:29,772 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:29,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:29,777 INFO L85 PathProgramCache]: Analyzing trace with hash 594715881, now seen corresponding path program 1 times [2022-03-03 17:19:29,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:29,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718105763] [2022-03-03 17:19:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:29,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:29,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718105763] [2022-03-03 17:19:29,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718105763] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:29,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:29,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:19:29,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977461521] [2022-03-03 17:19:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:29,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:19:29,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:19:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:19:30,013 INFO L87 Difference]: Start difference. First operand has 518 states, 517 states have (on average 2.4294003868471954) internal successors, (1256), 517 states have internal predecessors, (1256), 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) Second operand has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2022-03-03 17:19:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:30,095 INFO L93 Difference]: Finished difference Result 518 states and 1168 transitions. [2022-03-03 17:19:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:19:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) Word has length 116 [2022-03-03 17:19:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:30,122 INFO L225 Difference]: With dead ends: 518 [2022-03-03 17:19:30,122 INFO L226 Difference]: Without dead ends: 513 [2022-03-03 17:19:30,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:19:30,127 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:30,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:19:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-03-03 17:19:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-03-03 17:19:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 2.271484375) internal successors, (1163), 512 states have internal predecessors, (1163), 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) [2022-03-03 17:19:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 1163 transitions. [2022-03-03 17:19:30,214 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 1163 transitions. Word has length 116 [2022-03-03 17:19:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:30,214 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 1163 transitions. [2022-03-03 17:19:30,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2022-03-03 17:19:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 1163 transitions. [2022-03-03 17:19:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-03 17:19:30,223 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:30,224 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:30,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:19:30,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:30,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1044708008, now seen corresponding path program 1 times [2022-03-03 17:19:30,227 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:30,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709310603] [2022-03-03 17:19:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:30,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:30,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709310603] [2022-03-03 17:19:30,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709310603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:30,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:30,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:19:30,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581535656] [2022-03-03 17:19:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:30,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:19:30,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:30,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:19:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:30,544 INFO L87 Difference]: Start difference. First operand 513 states and 1163 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2022-03-03 17:19:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:30,638 INFO L93 Difference]: Finished difference Result 707 states and 1650 transitions. [2022-03-03 17:19:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:19:30,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) Word has length 116 [2022-03-03 17:19:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:30,642 INFO L225 Difference]: With dead ends: 707 [2022-03-03 17:19:30,643 INFO L226 Difference]: Without dead ends: 656 [2022-03-03 17:19:30,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:19:30,644 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 20 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:30,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 417 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-03-03 17:19:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 603. [2022-03-03 17:19:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 2.3056478405315612) internal successors, (1388), 602 states have internal predecessors, (1388), 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) [2022-03-03 17:19:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1388 transitions. [2022-03-03 17:19:30,674 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1388 transitions. Word has length 116 [2022-03-03 17:19:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:30,675 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1388 transitions. [2022-03-03 17:19:30,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2022-03-03 17:19:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1388 transitions. [2022-03-03 17:19:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:30,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:30,678 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:30,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:19:30,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:30,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash 523855466, now seen corresponding path program 1 times [2022-03-03 17:19:30,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:30,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752571951] [2022-03-03 17:19:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:30,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:30,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752571951] [2022-03-03 17:19:30,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752571951] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:30,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:30,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:19:30,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755415849] [2022-03-03 17:19:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:30,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:19:30,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:30,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:19:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:30,800 INFO L87 Difference]: Start difference. First operand 603 states and 1388 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:30,868 INFO L93 Difference]: Finished difference Result 881 states and 2105 transitions. [2022-03-03 17:19:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:30,877 INFO L225 Difference]: With dead ends: 881 [2022-03-03 17:19:30,877 INFO L226 Difference]: Without dead ends: 857 [2022-03-03 17:19:30,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:19:30,883 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 67 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:30,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 453 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:19:30,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-03-03 17:19:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 591. [2022-03-03 17:19:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 2.2966101694915255) internal successors, (1355), 590 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1355 transitions. [2022-03-03 17:19:30,916 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1355 transitions. Word has length 121 [2022-03-03 17:19:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:30,918 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1355 transitions. [2022-03-03 17:19:30,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1355 transitions. [2022-03-03 17:19:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:30,921 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:30,922 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:30,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:19:30,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1686027496, now seen corresponding path program 1 times [2022-03-03 17:19:30,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:30,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192045543] [2022-03-03 17:19:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:30,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:31,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:31,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192045543] [2022-03-03 17:19:31,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192045543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:31,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:31,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:19:31,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159942143] [2022-03-03 17:19:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:31,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:19:31,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:19:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:31,063 INFO L87 Difference]: Start difference. First operand 591 states and 1355 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:31,130 INFO L93 Difference]: Finished difference Result 905 states and 2187 transitions. [2022-03-03 17:19:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:19:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:31,135 INFO L225 Difference]: With dead ends: 905 [2022-03-03 17:19:31,135 INFO L226 Difference]: Without dead ends: 905 [2022-03-03 17:19:31,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:31,145 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 57 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:31,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 324 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-03-03 17:19:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 615. [2022-03-03 17:19:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 2.314332247557003) internal successors, (1421), 614 states have internal predecessors, (1421), 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) [2022-03-03 17:19:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1421 transitions. [2022-03-03 17:19:31,167 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1421 transitions. Word has length 121 [2022-03-03 17:19:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:31,167 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1421 transitions. [2022-03-03 17:19:31,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1421 transitions. [2022-03-03 17:19:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:31,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:31,172 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:31,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:19:31,172 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1438075066, now seen corresponding path program 2 times [2022-03-03 17:19:31,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:31,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047102911] [2022-03-03 17:19:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:31,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:31,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047102911] [2022-03-03 17:19:31,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047102911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:31,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:31,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:19:31,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762782408] [2022-03-03 17:19:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:31,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:19:31,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:19:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:31,294 INFO L87 Difference]: Start difference. First operand 615 states and 1421 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) [2022-03-03 17:19:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:31,379 INFO L93 Difference]: Finished difference Result 1033 states and 2539 transitions. [2022-03-03 17:19:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:31,385 INFO L225 Difference]: With dead ends: 1033 [2022-03-03 17:19:31,385 INFO L226 Difference]: Without dead ends: 1033 [2022-03-03 17:19:31,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:31,386 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 69 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:31,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 612 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-03-03 17:19:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 623. [2022-03-03 17:19:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.3263665594855305) internal successors, (1447), 622 states have internal predecessors, (1447), 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) [2022-03-03 17:19:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1447 transitions. [2022-03-03 17:19:31,406 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1447 transitions. Word has length 121 [2022-03-03 17:19:31,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:31,406 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1447 transitions. [2022-03-03 17:19:31,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) [2022-03-03 17:19:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1447 transitions. [2022-03-03 17:19:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:31,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:31,409 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:31,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:19:31,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:31,410 INFO L85 PathProgramCache]: Analyzing trace with hash 615047256, now seen corresponding path program 3 times [2022-03-03 17:19:31,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:31,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90727219] [2022-03-03 17:19:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:31,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:31,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:31,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90727219] [2022-03-03 17:19:31,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90727219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:31,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946635748] [2022-03-03 17:19:31,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:19:31,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:31,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:31,479 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) [2022-03-03 17:19:31,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:19:31,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:19:31,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:31,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:19:31,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:31,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:32,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946635748] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:32,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:32,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-03-03 17:19:32,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933380351] [2022-03-03 17:19:32,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:32,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 17:19:32,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 17:19:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:19:32,042 INFO L87 Difference]: Start difference. First operand 623 states and 1447 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 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) [2022-03-03 17:19:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:32,208 INFO L93 Difference]: Finished difference Result 1065 states and 2627 transitions. [2022-03-03 17:19:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:19:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 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) Word has length 121 [2022-03-03 17:19:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:32,213 INFO L225 Difference]: With dead ends: 1065 [2022-03-03 17:19:32,213 INFO L226 Difference]: Without dead ends: 1065 [2022-03-03 17:19:32,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:19:32,215 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 213 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:32,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 850 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:32,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-03-03 17:19:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 611. [2022-03-03 17:19:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 2.318032786885246) internal successors, (1414), 610 states have internal predecessors, (1414), 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) [2022-03-03 17:19:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1414 transitions. [2022-03-03 17:19:32,233 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1414 transitions. Word has length 121 [2022-03-03 17:19:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:32,233 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 1414 transitions. [2022-03-03 17:19:32,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 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) [2022-03-03 17:19:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1414 transitions. [2022-03-03 17:19:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:32,235 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:32,236 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:32,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-03 17:19:32,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-03 17:19:32,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -236481768, now seen corresponding path program 4 times [2022-03-03 17:19:32,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:32,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364952110] [2022-03-03 17:19:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:32,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:32,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364952110] [2022-03-03 17:19:32,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364952110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:32,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:32,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:19:32,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586863459] [2022-03-03 17:19:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:32,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:19:32,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:19:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:32,541 INFO L87 Difference]: Start difference. First operand 611 states and 1414 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:32,603 INFO L93 Difference]: Finished difference Result 1073 states and 2613 transitions. [2022-03-03 17:19:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:32,608 INFO L225 Difference]: With dead ends: 1073 [2022-03-03 17:19:32,608 INFO L226 Difference]: Without dead ends: 1046 [2022-03-03 17:19:32,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:32,609 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 96 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:32,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 319 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:19:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-03 17:19:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 615. [2022-03-03 17:19:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 2.320846905537459) internal successors, (1425), 614 states have internal predecessors, (1425), 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) [2022-03-03 17:19:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1425 transitions. [2022-03-03 17:19:32,628 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1425 transitions. Word has length 121 [2022-03-03 17:19:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:32,628 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1425 transitions. [2022-03-03 17:19:32,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1425 transitions. [2022-03-03 17:19:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:32,630 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:32,630 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:32,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 17:19:32,631 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1874528630, now seen corresponding path program 2 times [2022-03-03 17:19:32,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:32,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935072328] [2022-03-03 17:19:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:32,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:32,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935072328] [2022-03-03 17:19:32,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935072328] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:32,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460207432] [2022-03-03 17:19:32,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:19:32,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:32,693 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) [2022-03-03 17:19:32,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:19:32,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:19:32,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:32,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:19:32,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:33,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:33,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460207432] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:33,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:33,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-03-03 17:19:33,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787859681] [2022-03-03 17:19:33,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:33,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:19:33,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:33,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:19:33,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:19:33,156 INFO L87 Difference]: Start difference. First operand 615 states and 1425 transitions. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) [2022-03-03 17:19:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:33,284 INFO L93 Difference]: Finished difference Result 1090 states and 2656 transitions. [2022-03-03 17:19:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:19:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) Word has length 121 [2022-03-03 17:19:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:33,290 INFO L225 Difference]: With dead ends: 1090 [2022-03-03 17:19:33,290 INFO L226 Difference]: Without dead ends: 1090 [2022-03-03 17:19:33,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:19:33,291 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 99 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:33,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 954 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-03-03 17:19:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 647. [2022-03-03 17:19:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.348297213622291) internal successors, (1517), 646 states have internal predecessors, (1517), 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) [2022-03-03 17:19:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1517 transitions. [2022-03-03 17:19:33,315 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1517 transitions. Word has length 121 [2022-03-03 17:19:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:33,315 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1517 transitions. [2022-03-03 17:19:33,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) [2022-03-03 17:19:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1517 transitions. [2022-03-03 17:19:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:33,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:33,317 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:33,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:33,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-03-03 17:19:33,532 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:33,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2636990, now seen corresponding path program 5 times [2022-03-03 17:19:33,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:33,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575643977] [2022-03-03 17:19:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:33,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:33,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:33,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575643977] [2022-03-03 17:19:33,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575643977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:33,590 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:33,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:19:33,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154627211] [2022-03-03 17:19:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:33,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:19:33,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:19:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:33,592 INFO L87 Difference]: Start difference. First operand 647 states and 1517 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) [2022-03-03 17:19:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:33,657 INFO L93 Difference]: Finished difference Result 1113 states and 2763 transitions. [2022-03-03 17:19:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:33,663 INFO L225 Difference]: With dead ends: 1113 [2022-03-03 17:19:33,663 INFO L226 Difference]: Without dead ends: 1113 [2022-03-03 17:19:33,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:33,664 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 66 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:33,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 459 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-03-03 17:19:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 635. [2022-03-03 17:19:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 2.3406940063091484) internal successors, (1484), 634 states have internal predecessors, (1484), 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) [2022-03-03 17:19:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1484 transitions. [2022-03-03 17:19:33,697 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1484 transitions. Word has length 121 [2022-03-03 17:19:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:33,698 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 1484 transitions. [2022-03-03 17:19:33,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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) [2022-03-03 17:19:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1484 transitions. [2022-03-03 17:19:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:33,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:33,700 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:33,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:19:33,701 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1838859486, now seen corresponding path program 6 times [2022-03-03 17:19:33,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:33,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584147515] [2022-03-03 17:19:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:33,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:33,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:33,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584147515] [2022-03-03 17:19:33,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584147515] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:33,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:33,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:19:33,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140455150] [2022-03-03 17:19:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:33,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:19:33,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:19:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:33,764 INFO L87 Difference]: Start difference. First operand 635 states and 1484 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:33,817 INFO L93 Difference]: Finished difference Result 964 states and 2314 transitions. [2022-03-03 17:19:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:33,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:33,822 INFO L225 Difference]: With dead ends: 964 [2022-03-03 17:19:33,822 INFO L226 Difference]: Without dead ends: 916 [2022-03-03 17:19:33,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:19:33,823 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 83 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:33,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 464 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:19:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-03-03 17:19:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 602. [2022-03-03 17:19:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.344425956738769) internal successors, (1409), 601 states have internal predecessors, (1409), 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) [2022-03-03 17:19:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1409 transitions. [2022-03-03 17:19:33,844 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1409 transitions. Word has length 121 [2022-03-03 17:19:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:33,844 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1409 transitions. [2022-03-03 17:19:33,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1409 transitions. [2022-03-03 17:19:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:33,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:33,847 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:33,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 17:19:33,847 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1068356708, now seen corresponding path program 3 times [2022-03-03 17:19:33,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:33,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632966219] [2022-03-03 17:19:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:33,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:33,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632966219] [2022-03-03 17:19:33,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632966219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:33,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163983418] [2022-03-03 17:19:33,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:19:33,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:33,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:33,908 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) [2022-03-03 17:19:33,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:19:34,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:19:34,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:34,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:19:34,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:34,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:34,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163983418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:34,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:34,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-03-03 17:19:34,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699730687] [2022-03-03 17:19:34,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:34,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 17:19:34,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 17:19:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:19:34,414 INFO L87 Difference]: Start difference. First operand 602 states and 1409 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2022-03-03 17:19:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:34,584 INFO L93 Difference]: Finished difference Result 1104 states and 2727 transitions. [2022-03-03 17:19:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:19:34,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) Word has length 121 [2022-03-03 17:19:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:34,590 INFO L225 Difference]: With dead ends: 1104 [2022-03-03 17:19:34,590 INFO L226 Difference]: Without dead ends: 1104 [2022-03-03 17:19:34,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:19:34,591 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 196 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:34,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1169 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-03-03 17:19:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 602. [2022-03-03 17:19:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.344425956738769) internal successors, (1409), 601 states have internal predecessors, (1409), 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) [2022-03-03 17:19:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1409 transitions. [2022-03-03 17:19:34,610 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1409 transitions. Word has length 121 [2022-03-03 17:19:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:34,610 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1409 transitions. [2022-03-03 17:19:34,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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) [2022-03-03 17:19:34,611 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1409 transitions. [2022-03-03 17:19:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:34,615 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:34,615 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:34,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:34,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:34,833 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash 225077358, now seen corresponding path program 7 times [2022-03-03 17:19:34,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:34,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862477025] [2022-03-03 17:19:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:34,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:34,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:34,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862477025] [2022-03-03 17:19:34,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862477025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:34,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:34,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:19:34,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643038742] [2022-03-03 17:19:34,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:34,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:19:34,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:19:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:19:34,886 INFO L87 Difference]: Start difference. First operand 602 states and 1409 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:34,964 INFO L93 Difference]: Finished difference Result 1195 states and 2891 transitions. [2022-03-03 17:19:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:34,970 INFO L225 Difference]: With dead ends: 1195 [2022-03-03 17:19:34,970 INFO L226 Difference]: Without dead ends: 1168 [2022-03-03 17:19:34,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:34,971 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 99 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:34,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 494 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-03-03 17:19:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 602. [2022-03-03 17:19:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.3311148086522464) internal successors, (1401), 601 states have internal predecessors, (1401), 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) [2022-03-03 17:19:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1401 transitions. [2022-03-03 17:19:34,991 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1401 transitions. Word has length 121 [2022-03-03 17:19:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:34,991 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1401 transitions. [2022-03-03 17:19:34,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2022-03-03 17:19:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1401 transitions. [2022-03-03 17:19:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-03 17:19:34,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:34,993 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:34,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 17:19:34,994 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:34,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1412969504, now seen corresponding path program 4 times [2022-03-03 17:19:34,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:34,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874308197] [2022-03-03 17:19:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:35,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:35,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874308197] [2022-03-03 17:19:35,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874308197] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:35,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621198501] [2022-03-03 17:19:35,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:19:35,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:35,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:35,080 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) [2022-03-03 17:19:35,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:19:35,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:19:35,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:35,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 17:19:35,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:35,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:19:35,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621198501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:35,581 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:19:35,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-03-03 17:19:35,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695091257] [2022-03-03 17:19:35,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:35,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:19:35,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:35,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:19:35,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:19:35,583 INFO L87 Difference]: Start difference. First operand 602 states and 1401 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) [2022-03-03 17:19:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:35,679 INFO L93 Difference]: Finished difference Result 743 states and 1626 transitions. [2022-03-03 17:19:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:19:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) Word has length 121 [2022-03-03 17:19:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:35,682 INFO L225 Difference]: With dead ends: 743 [2022-03-03 17:19:35,682 INFO L226 Difference]: Without dead ends: 608 [2022-03-03 17:19:35,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:19:35,682 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 239 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 514 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-03 17:19:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 603. [2022-03-03 17:19:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 2.3289036544850497) internal successors, (1402), 602 states have internal predecessors, (1402), 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) [2022-03-03 17:19:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1402 transitions. [2022-03-03 17:19:35,697 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1402 transitions. Word has length 121 [2022-03-03 17:19:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:35,697 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1402 transitions. [2022-03-03 17:19:35,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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) [2022-03-03 17:19:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1402 transitions. [2022-03-03 17:19:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-03 17:19:35,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:35,699 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:35,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:35,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:35,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash 987067573, now seen corresponding path program 1 times [2022-03-03 17:19:35,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:35,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811029106] [2022-03-03 17:19:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:35,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:35,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811029106] [2022-03-03 17:19:35,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811029106] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:35,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790195597] [2022-03-03 17:19:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:35,994 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) [2022-03-03 17:19:35,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:19:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:36,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-03 17:19:36,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:36,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:36,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790195597] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:36,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:36,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-03-03 17:19:36,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485192219] [2022-03-03 17:19:36,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:36,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:19:36,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:19:36,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:19:36,481 INFO L87 Difference]: Start difference. First operand 603 states and 1402 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 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) [2022-03-03 17:19:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:36,636 INFO L93 Difference]: Finished difference Result 1333 states and 3250 transitions. [2022-03-03 17:19:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:19:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 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) Word has length 128 [2022-03-03 17:19:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:36,642 INFO L225 Difference]: With dead ends: 1333 [2022-03-03 17:19:36,642 INFO L226 Difference]: Without dead ends: 1333 [2022-03-03 17:19:36,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:19:36,643 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 181 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:36,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 957 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2022-03-03 17:19:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 615. [2022-03-03 17:19:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 2.3371335504885993) internal successors, (1435), 614 states have internal predecessors, (1435), 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) [2022-03-03 17:19:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1435 transitions. [2022-03-03 17:19:36,661 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1435 transitions. Word has length 128 [2022-03-03 17:19:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:36,662 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1435 transitions. [2022-03-03 17:19:36,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 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) [2022-03-03 17:19:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1435 transitions. [2022-03-03 17:19:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-03 17:19:36,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:36,664 INFO L514 BasicCegarLoop]: 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] [2022-03-03 17:19:36,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:36,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 17:19:36,886 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1430734103, now seen corresponding path program 1 times [2022-03-03 17:19:36,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:36,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472566275] [2022-03-03 17:19:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:36,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:36,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472566275] [2022-03-03 17:19:36,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472566275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:36,966 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:36,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 17:19:36,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104488440] [2022-03-03 17:19:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:36,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:19:36,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:19:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:36,968 INFO L87 Difference]: Start difference. First operand 615 states and 1435 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2022-03-03 17:19:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:37,029 INFO L93 Difference]: Finished difference Result 833 states and 2021 transitions. [2022-03-03 17:19:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:19:37,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) Word has length 128 [2022-03-03 17:19:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:37,033 INFO L225 Difference]: With dead ends: 833 [2022-03-03 17:19:37,033 INFO L226 Difference]: Without dead ends: 833 [2022-03-03 17:19:37,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:19:37,036 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 47 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:37,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 608 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:19:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-03 17:19:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 599. [2022-03-03 17:19:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 2.3260869565217392) internal successors, (1391), 598 states have internal predecessors, (1391), 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) [2022-03-03 17:19:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1391 transitions. [2022-03-03 17:19:37,050 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 1391 transitions. Word has length 128 [2022-03-03 17:19:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:37,050 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 1391 transitions. [2022-03-03 17:19:37,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2022-03-03 17:19:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 1391 transitions. [2022-03-03 17:19:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-03 17:19:37,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:37,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:37,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-03 17:19:37,053 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2102308275, now seen corresponding path program 1 times [2022-03-03 17:19:37,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:37,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108284140] [2022-03-03 17:19:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:37,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:19:37,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:37,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108284140] [2022-03-03 17:19:37,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108284140] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:19:37,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:19:37,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:19:37,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220369967] [2022-03-03 17:19:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:19:37,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:19:37,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:19:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:19:37,158 INFO L87 Difference]: Start difference. First operand 599 states and 1391 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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) [2022-03-03 17:19:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:37,244 INFO L93 Difference]: Finished difference Result 694 states and 1579 transitions. [2022-03-03 17:19:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:19:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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) Word has length 133 [2022-03-03 17:19:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:37,247 INFO L225 Difference]: With dead ends: 694 [2022-03-03 17:19:37,247 INFO L226 Difference]: Without dead ends: 631 [2022-03-03 17:19:37,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-03 17:19:37,248 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 155 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:37,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 564 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:19:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-03-03 17:19:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 600. [2022-03-03 17:19:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 2.323873121869783) internal successors, (1392), 599 states have internal predecessors, (1392), 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) [2022-03-03 17:19:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1392 transitions. [2022-03-03 17:19:37,261 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1392 transitions. Word has length 133 [2022-03-03 17:19:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:37,261 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 1392 transitions. [2022-03-03 17:19:37,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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) [2022-03-03 17:19:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1392 transitions. [2022-03-03 17:19:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-03 17:19:37,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:37,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:37,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-03 17:19:37,264 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2085552144, now seen corresponding path program 1 times [2022-03-03 17:19:37,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:37,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127211973] [2022-03-03 17:19:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:37,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:37,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:37,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127211973] [2022-03-03 17:19:37,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127211973] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:37,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328560415] [2022-03-03 17:19:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:37,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:37,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:37,591 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) [2022-03-03 17:19:37,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:19:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:37,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:19:37,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:38,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 10 [2022-03-03 17:19:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:38,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:38,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 12 [2022-03-03 17:19:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:38,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328560415] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:38,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:38,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 29 [2022-03-03 17:19:38,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219503505] [2022-03-03 17:19:38,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:38,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:19:38,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:19:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:19:38,492 INFO L87 Difference]: Start difference. First operand 600 states and 1392 transitions. Second operand has 29 states, 29 states have (on average 9.413793103448276) internal successors, (273), 29 states have internal predecessors, (273), 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) [2022-03-03 17:19:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:40,036 INFO L93 Difference]: Finished difference Result 2961 states and 7368 transitions. [2022-03-03 17:19:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:19:40,037 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.413793103448276) internal successors, (273), 29 states have internal predecessors, (273), 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) Word has length 140 [2022-03-03 17:19:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:40,045 INFO L225 Difference]: With dead ends: 2961 [2022-03-03 17:19:40,046 INFO L226 Difference]: Without dead ends: 1820 [2022-03-03 17:19:40,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=889, Invalid=5117, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:19:40,048 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 2251 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:40,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2251 Valid, 2103 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:19:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-03-03 17:19:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1094. [2022-03-03 17:19:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 2.375114364135407) internal successors, (2596), 1093 states have internal predecessors, (2596), 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) [2022-03-03 17:19:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 2596 transitions. [2022-03-03 17:19:40,101 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 2596 transitions. Word has length 140 [2022-03-03 17:19:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:40,101 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 2596 transitions. [2022-03-03 17:19:40,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.413793103448276) internal successors, (273), 29 states have internal predecessors, (273), 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) [2022-03-03 17:19:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 2596 transitions. [2022-03-03 17:19:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-03-03 17:19:40,105 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:40,105 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:19:40,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:40,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 17:19:40,326 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:40,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -725094421, now seen corresponding path program 2 times [2022-03-03 17:19:40,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:40,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268553615] [2022-03-03 17:19:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:19:40,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:40,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268553615] [2022-03-03 17:19:40,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268553615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:40,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437371204] [2022-03-03 17:19:40,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:19:40,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:40,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:40,502 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) [2022-03-03 17:19:40,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:19:40,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:19:40,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:40,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:19:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:40,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 10 [2022-03-03 17:19:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:19:40,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:40,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 12 [2022-03-03 17:19:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:19:41,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437371204] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:41,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:41,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 20 [2022-03-03 17:19:41,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027289781] [2022-03-03 17:19:41,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:41,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:19:41,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:19:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:19:41,314 INFO L87 Difference]: Start difference. First operand 1094 states and 2596 transitions. Second operand has 20 states, 20 states have (on average 9.25) internal successors, (185), 20 states have internal predecessors, (185), 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) [2022-03-03 17:19:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:41,735 INFO L93 Difference]: Finished difference Result 2876 states and 7282 transitions. [2022-03-03 17:19:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:19:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.25) internal successors, (185), 20 states have internal predecessors, (185), 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) Word has length 147 [2022-03-03 17:19:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:41,748 INFO L225 Difference]: With dead ends: 2876 [2022-03-03 17:19:41,748 INFO L226 Difference]: Without dead ends: 2588 [2022-03-03 17:19:41,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=1044, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:19:41,749 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 803 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 1581 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:19:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-03-03 17:19:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2095. [2022-03-03 17:19:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 2.5826170009551097) internal successors, (5408), 2094 states have internal predecessors, (5408), 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) [2022-03-03 17:19:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 5408 transitions. [2022-03-03 17:19:41,806 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 5408 transitions. Word has length 147 [2022-03-03 17:19:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:41,806 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 5408 transitions. [2022-03-03 17:19:41,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.25) internal successors, (185), 20 states have internal predecessors, (185), 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) [2022-03-03 17:19:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 5408 transitions. [2022-03-03 17:19:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-03-03 17:19:41,812 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:41,812 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:19:41,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:42,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:42,028 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1249283891, now seen corresponding path program 3 times [2022-03-03 17:19:42,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:42,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329175650] [2022-03-03 17:19:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:19:42,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:42,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329175650] [2022-03-03 17:19:42,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329175650] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:42,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188468886] [2022-03-03 17:19:42,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:19:42,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:42,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:42,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:42,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:19:42,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:19:42,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:42,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-03 17:19:42,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:43,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:19:43,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:19:43,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:19:43,918 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-03-03 17:19:43,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2022-03-03 17:19:43,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2022-03-03 17:19:44,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 7 [2022-03-03 17:19:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:19:44,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:45,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:19:45,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 97 [2022-03-03 17:19:45,082 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:19:45,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 368 treesize of output 326 [2022-03-03 17:19:45,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:19:45,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 305 treesize of output 278 [2022-03-03 17:19:45,127 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:19:45,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 109 [2022-03-03 17:19:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:19:52,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188468886] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:52,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:52,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 51 [2022-03-03 17:19:52,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967346007] [2022-03-03 17:19:52,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:52,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 17:19:52,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 17:19:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2274, Unknown=25, NotChecked=0, Total=2550 [2022-03-03 17:19:52,037 INFO L87 Difference]: Start difference. First operand 2095 states and 5408 transitions. Second operand has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 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) [2022-03-03 17:20:12,115 WARN L228 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 70 DAG size of output: 19 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:20:18,554 WARN L228 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 72 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:20:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:18,555 INFO L93 Difference]: Finished difference Result 3889 states and 10022 transitions. [2022-03-03 17:20:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:20:18,556 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 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) Word has length 147 [2022-03-03 17:20:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:18,568 INFO L225 Difference]: With dead ends: 3889 [2022-03-03 17:20:18,568 INFO L226 Difference]: Without dead ends: 3352 [2022-03-03 17:20:18,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=631, Invalid=5502, Unknown=29, NotChecked=0, Total=6162 [2022-03-03 17:20:18,570 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 628 mSDsluCounter, 4002 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:18,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 3990 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 656 Invalid, 0 Unknown, 455 Unchecked, 0.4s Time] [2022-03-03 17:20:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-03-03 17:20:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 2527. [2022-03-03 17:20:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2526 states have (on average 2.593428345209818) internal successors, (6551), 2526 states have internal predecessors, (6551), 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) [2022-03-03 17:20:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 6551 transitions. [2022-03-03 17:20:18,628 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 6551 transitions. Word has length 147 [2022-03-03 17:20:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:18,629 INFO L470 AbstractCegarLoop]: Abstraction has 2527 states and 6551 transitions. [2022-03-03 17:20:18,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 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) [2022-03-03 17:20:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 6551 transitions. [2022-03-03 17:20:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:18,635 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:18,635 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:18,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:18,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:18,836 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1465421647, now seen corresponding path program 4 times [2022-03-03 17:20:18,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:18,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541551814] [2022-03-03 17:20:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:18,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:18,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541551814] [2022-03-03 17:20:18,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541551814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:18,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642881042] [2022-03-03 17:20:18,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:20:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:18,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:18,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:20:19,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:20:19,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:19,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:19,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:19,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642881042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:19,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:19,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:20:19,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796584537] [2022-03-03 17:20:19,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:19,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:20:19,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:20:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:20:19,648 INFO L87 Difference]: Start difference. First operand 2527 states and 6551 transitions. Second operand has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 21 states have internal predecessors, (192), 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) [2022-03-03 17:20:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:20,666 INFO L93 Difference]: Finished difference Result 8371 states and 22484 transitions. [2022-03-03 17:20:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:20:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 21 states have internal predecessors, (192), 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) Word has length 152 [2022-03-03 17:20:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:20,693 INFO L225 Difference]: With dead ends: 8371 [2022-03-03 17:20:20,693 INFO L226 Difference]: Without dead ends: 8161 [2022-03-03 17:20:20,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=476, Invalid=1780, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:20:20,694 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 350 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:20,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2045 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2022-03-03 17:20:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 4083. [2022-03-03 17:20:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 4082 states have (on average 2.711905928466438) internal successors, (11070), 4082 states have internal predecessors, (11070), 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) [2022-03-03 17:20:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 11070 transitions. [2022-03-03 17:20:20,860 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 11070 transitions. Word has length 152 [2022-03-03 17:20:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:20,862 INFO L470 AbstractCegarLoop]: Abstraction has 4083 states and 11070 transitions. [2022-03-03 17:20:20,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 21 states have internal predecessors, (192), 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) [2022-03-03 17:20:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 11070 transitions. [2022-03-03 17:20:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:20,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:20,881 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:20,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:21,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:21,096 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1031046331, now seen corresponding path program 5 times [2022-03-03 17:20:21,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:21,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925316019] [2022-03-03 17:20:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:21,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:21,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:21,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925316019] [2022-03-03 17:20:21,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925316019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:21,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249309867] [2022-03-03 17:20:21,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:20:21,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:21,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:21,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:20:21,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:20:21,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:21,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:21,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:21,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:20:21,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249309867] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:21,932 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:21,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:21,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629246464] [2022-03-03 17:20:21,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:21,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:21,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:21,934 INFO L87 Difference]: Start difference. First operand 4083 states and 11070 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:23,062 INFO L93 Difference]: Finished difference Result 12574 states and 34305 transitions. [2022-03-03 17:20:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:20:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) Word has length 152 [2022-03-03 17:20:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:23,104 INFO L225 Difference]: With dead ends: 12574 [2022-03-03 17:20:23,104 INFO L226 Difference]: Without dead ends: 12454 [2022-03-03 17:20:23,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=641, Invalid=2551, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:20:23,106 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 509 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:23,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 2060 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12454 states. [2022-03-03 17:20:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12454 to 4999. [2022-03-03 17:20:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4998 states have (on average 2.777310924369748) internal successors, (13881), 4998 states have internal predecessors, (13881), 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) [2022-03-03 17:20:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 13881 transitions. [2022-03-03 17:20:23,302 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 13881 transitions. Word has length 152 [2022-03-03 17:20:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:23,302 INFO L470 AbstractCegarLoop]: Abstraction has 4999 states and 13881 transitions. [2022-03-03 17:20:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 13881 transitions. [2022-03-03 17:20:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:23,315 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:23,315 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:23,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:23,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-03 17:20:23,544 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1809336393, now seen corresponding path program 6 times [2022-03-03 17:20:23,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:23,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376173072] [2022-03-03 17:20:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:23,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:23,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376173072] [2022-03-03 17:20:23,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376173072] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:23,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216448209] [2022-03-03 17:20:23,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:20:23,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:23,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:23,640 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:23,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:20:23,747 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:20:23,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:23,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:23,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:24,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:24,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216448209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:24,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:24,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:24,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503333577] [2022-03-03 17:20:24,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:24,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:24,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:24,283 INFO L87 Difference]: Start difference. First operand 4999 states and 13881 transitions. Second operand has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:25,241 INFO L93 Difference]: Finished difference Result 9536 states and 26044 transitions. [2022-03-03 17:20:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:20:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) Word has length 152 [2022-03-03 17:20:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:25,270 INFO L225 Difference]: With dead ends: 9536 [2022-03-03 17:20:25,270 INFO L226 Difference]: Without dead ends: 9464 [2022-03-03 17:20:25,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:20:25,272 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 524 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:25,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 2450 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9464 states. [2022-03-03 17:20:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9464 to 4959. [2022-03-03 17:20:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 4958 states have (on average 2.77269060104881) internal successors, (13747), 4958 states have internal predecessors, (13747), 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) [2022-03-03 17:20:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 13747 transitions. [2022-03-03 17:20:25,456 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 13747 transitions. Word has length 152 [2022-03-03 17:20:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:25,456 INFO L470 AbstractCegarLoop]: Abstraction has 4959 states and 13747 transitions. [2022-03-03 17:20:25,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 13747 transitions. [2022-03-03 17:20:25,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:25,469 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:25,469 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:25,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:25,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-03 17:20:25,694 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash -964400391, now seen corresponding path program 7 times [2022-03-03 17:20:25,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:25,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727062384] [2022-03-03 17:20:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:25,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:25,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727062384] [2022-03-03 17:20:25,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727062384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:25,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123249620] [2022-03-03 17:20:25,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:20:25,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:25,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:25,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:20:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:25,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:25,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:26,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:20:26,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123249620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:26,404 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:26,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:26,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314214849] [2022-03-03 17:20:26,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:26,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:26,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:26,405 INFO L87 Difference]: Start difference. First operand 4959 states and 13747 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:27,216 INFO L93 Difference]: Finished difference Result 11746 states and 32529 transitions. [2022-03-03 17:20:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 17:20:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) Word has length 152 [2022-03-03 17:20:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:27,243 INFO L225 Difference]: With dead ends: 11746 [2022-03-03 17:20:27,243 INFO L226 Difference]: Without dead ends: 11686 [2022-03-03 17:20:27,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=466, Invalid=1790, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:20:27,244 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 460 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:27,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1792 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:20:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11686 states. [2022-03-03 17:20:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11686 to 6419. [2022-03-03 17:20:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6419 states, 6418 states have (on average 2.8117793705204113) internal successors, (18046), 6418 states have internal predecessors, (18046), 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) [2022-03-03 17:20:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 18046 transitions. [2022-03-03 17:20:27,445 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 18046 transitions. Word has length 152 [2022-03-03 17:20:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:27,445 INFO L470 AbstractCegarLoop]: Abstraction has 6419 states and 18046 transitions. [2022-03-03 17:20:27,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 18046 transitions. [2022-03-03 17:20:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:27,462 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:27,462 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:27,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:27,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-03 17:20:27,675 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -672607065, now seen corresponding path program 8 times [2022-03-03 17:20:27,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:27,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631305648] [2022-03-03 17:20:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:27,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:27,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631305648] [2022-03-03 17:20:27,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631305648] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:27,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949172851] [2022-03-03 17:20:27,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:20:27,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:27,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:27,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:27,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:20:27,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:20:27,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:27,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:27,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:28,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:28,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949172851] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:28,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:28,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:28,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974390766] [2022-03-03 17:20:28,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:28,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:28,348 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:28,348 INFO L87 Difference]: Start difference. First operand 6419 states and 18046 transitions. Second operand has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:29,176 INFO L93 Difference]: Finished difference Result 11224 states and 31114 transitions. [2022-03-03 17:20:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:20:29,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) Word has length 152 [2022-03-03 17:20:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:29,204 INFO L225 Difference]: With dead ends: 11224 [2022-03-03 17:20:29,204 INFO L226 Difference]: Without dead ends: 11176 [2022-03-03 17:20:29,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:20:29,205 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 372 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:29,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 2190 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:20:29,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states. [2022-03-03 17:20:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 6403. [2022-03-03 17:20:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6403 states, 6402 states have (on average 2.809434551702593) internal successors, (17986), 6402 states have internal predecessors, (17986), 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) [2022-03-03 17:20:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6403 states to 6403 states and 17986 transitions. [2022-03-03 17:20:29,423 INFO L78 Accepts]: Start accepts. Automaton has 6403 states and 17986 transitions. Word has length 152 [2022-03-03 17:20:29,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:29,423 INFO L470 AbstractCegarLoop]: Abstraction has 6403 states and 17986 transitions. [2022-03-03 17:20:29,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 6403 states and 17986 transitions. [2022-03-03 17:20:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:29,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:29,439 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:29,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:29,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-03 17:20:29,653 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 236170761, now seen corresponding path program 9 times [2022-03-03 17:20:29,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:29,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553080638] [2022-03-03 17:20:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:29,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:29,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553080638] [2022-03-03 17:20:29,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553080638] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:29,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937928997] [2022-03-03 17:20:29,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:20:29,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:29,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:29,761 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:29,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:20:29,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:20:29,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:29,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:29,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:30,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:30,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937928997] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:30,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:30,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:20:30,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577173768] [2022-03-03 17:20:30,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:30,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:20:30,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:30,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:20:30,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:20:30,542 INFO L87 Difference]: Start difference. First operand 6403 states and 17986 transitions. Second operand has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) [2022-03-03 17:20:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:31,305 INFO L93 Difference]: Finished difference Result 10036 states and 27902 transitions. [2022-03-03 17:20:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:20:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) Word has length 152 [2022-03-03 17:20:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:31,322 INFO L225 Difference]: With dead ends: 10036 [2022-03-03 17:20:31,323 INFO L226 Difference]: Without dead ends: 9964 [2022-03-03 17:20:31,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=387, Invalid=1869, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:20:31,324 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 391 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:31,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2287 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9964 states. [2022-03-03 17:20:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9964 to 6859. [2022-03-03 17:20:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6859 states, 6858 states have (on average 2.821813939924176) internal successors, (19352), 6858 states have internal predecessors, (19352), 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) [2022-03-03 17:20:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6859 states to 6859 states and 19352 transitions. [2022-03-03 17:20:31,513 INFO L78 Accepts]: Start accepts. Automaton has 6859 states and 19352 transitions. Word has length 152 [2022-03-03 17:20:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:31,514 INFO L470 AbstractCegarLoop]: Abstraction has 6859 states and 19352 transitions. [2022-03-03 17:20:31,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) [2022-03-03 17:20:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6859 states and 19352 transitions. [2022-03-03 17:20:31,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:31,570 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:31,570 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:31,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:31,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:31,804 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1540342041, now seen corresponding path program 10 times [2022-03-03 17:20:31,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:31,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535306265] [2022-03-03 17:20:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:31,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:31,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535306265] [2022-03-03 17:20:31,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535306265] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:31,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729035075] [2022-03-03 17:20:31,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:20:31,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:31,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:31,936 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:31,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:20:32,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:20:32,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:32,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:32,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:32,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:20:32,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729035075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:32,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:32,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:32,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766563724] [2022-03-03 17:20:32,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:32,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:32,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:32,642 INFO L87 Difference]: Start difference. First operand 6859 states and 19352 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:33,801 INFO L93 Difference]: Finished difference Result 17689 states and 49664 transitions. [2022-03-03 17:20:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:20:33,801 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) Word has length 152 [2022-03-03 17:20:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:33,835 INFO L225 Difference]: With dead ends: 17689 [2022-03-03 17:20:33,835 INFO L226 Difference]: Without dead ends: 17614 [2022-03-03 17:20:33,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=614, Invalid=2692, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:20:33,836 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 458 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:33,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2467 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2022-03-03 17:20:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 8651. [2022-03-03 17:20:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8651 states, 8650 states have (on average 2.853179190751445) internal successors, (24680), 8650 states have internal predecessors, (24680), 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) [2022-03-03 17:20:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8651 states to 8651 states and 24680 transitions. [2022-03-03 17:20:34,131 INFO L78 Accepts]: Start accepts. Automaton has 8651 states and 24680 transitions. Word has length 152 [2022-03-03 17:20:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:34,131 INFO L470 AbstractCegarLoop]: Abstraction has 8651 states and 24680 transitions. [2022-03-03 17:20:34,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8651 states and 24680 transitions. [2022-03-03 17:20:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:34,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:34,152 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:34,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:34,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 17:20:34,360 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:34,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1976335193, now seen corresponding path program 11 times [2022-03-03 17:20:34,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:34,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111803658] [2022-03-03 17:20:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:34,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:34,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:34,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111803658] [2022-03-03 17:20:34,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111803658] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:34,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239161202] [2022-03-03 17:20:34,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:20:34,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:34,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:34,469 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:34,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:20:34,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:20:34,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:34,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:34,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:34,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:35,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239161202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:35,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:35,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:35,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037201669] [2022-03-03 17:20:35,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:35,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:35,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:35,187 INFO L87 Difference]: Start difference. First operand 8651 states and 24680 transitions. Second operand has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:36,097 INFO L93 Difference]: Finished difference Result 14768 states and 41599 transitions. [2022-03-03 17:20:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:20:36,097 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) Word has length 152 [2022-03-03 17:20:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:36,129 INFO L225 Difference]: With dead ends: 14768 [2022-03-03 17:20:36,129 INFO L226 Difference]: Without dead ends: 14732 [2022-03-03 17:20:36,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:20:36,130 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 505 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:36,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 1770 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:20:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2022-03-03 17:20:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 8631. [2022-03-03 17:20:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8631 states, 8630 states have (on average 2.851564310544612) internal successors, (24609), 8630 states have internal predecessors, (24609), 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) [2022-03-03 17:20:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8631 states to 8631 states and 24609 transitions. [2022-03-03 17:20:36,416 INFO L78 Accepts]: Start accepts. Automaton has 8631 states and 24609 transitions. Word has length 152 [2022-03-03 17:20:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:36,416 INFO L470 AbstractCegarLoop]: Abstraction has 8631 states and 24609 transitions. [2022-03-03 17:20:36,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8631 states and 24609 transitions. [2022-03-03 17:20:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:36,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:36,435 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:36,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:36,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-03 17:20:36,651 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:36,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1753394389, now seen corresponding path program 12 times [2022-03-03 17:20:36,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:36,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510135414] [2022-03-03 17:20:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:36,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:36,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510135414] [2022-03-03 17:20:36,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510135414] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:36,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865553644] [2022-03-03 17:20:36,754 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:20:36,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:36,756 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:36,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:20:36,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:20:36,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:36,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:36,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:37,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:20:37,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865553644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:37,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:37,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:37,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039203689] [2022-03-03 17:20:37,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:37,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:37,449 INFO L87 Difference]: Start difference. First operand 8631 states and 24609 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:38,644 INFO L93 Difference]: Finished difference Result 16800 states and 47176 transitions. [2022-03-03 17:20:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:20:38,644 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) Word has length 152 [2022-03-03 17:20:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:38,677 INFO L225 Difference]: With dead ends: 16800 [2022-03-03 17:20:38,677 INFO L226 Difference]: Without dead ends: 16725 [2022-03-03 17:20:38,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=719, Invalid=2821, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 17:20:38,682 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 685 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:38,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 2009 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16725 states. [2022-03-03 17:20:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16725 to 10223. [2022-03-03 17:20:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10223 states, 10222 states have (on average 2.8783995304245744) internal successors, (29423), 10222 states have internal predecessors, (29423), 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) [2022-03-03 17:20:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10223 states to 10223 states and 29423 transitions. [2022-03-03 17:20:38,965 INFO L78 Accepts]: Start accepts. Automaton has 10223 states and 29423 transitions. Word has length 152 [2022-03-03 17:20:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:38,965 INFO L470 AbstractCegarLoop]: Abstraction has 10223 states and 29423 transitions. [2022-03-03 17:20:38,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 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) [2022-03-03 17:20:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 10223 states and 29423 transitions. [2022-03-03 17:20:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:38,981 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:38,981 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:38,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-03 17:20:39,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 17:20:39,182 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:39,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1461601063, now seen corresponding path program 13 times [2022-03-03 17:20:39,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:39,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786890070] [2022-03-03 17:20:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:39,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:39,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786890070] [2022-03-03 17:20:39,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786890070] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:39,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038803846] [2022-03-03 17:20:39,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:20:39,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:39,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:39,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:39,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:20:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:39,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:39,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:39,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:39,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038803846] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:39,975 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:39,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:20:39,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115121734] [2022-03-03 17:20:39,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:39,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:39,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:39,977 INFO L87 Difference]: Start difference. First operand 10223 states and 29423 transitions. Second operand has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:41,081 INFO L93 Difference]: Finished difference Result 15980 states and 44991 transitions. [2022-03-03 17:20:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:20:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) Word has length 152 [2022-03-03 17:20:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:41,116 INFO L225 Difference]: With dead ends: 15980 [2022-03-03 17:20:41,116 INFO L226 Difference]: Without dead ends: 15932 [2022-03-03 17:20:41,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=593, Invalid=2713, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:20:41,118 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 517 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:41,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2420 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15932 states. [2022-03-03 17:20:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15932 to 10199. [2022-03-03 17:20:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10199 states, 10198 states have (on average 2.8771327711315946) internal successors, (29341), 10198 states have internal predecessors, (29341), 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) [2022-03-03 17:20:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 29341 transitions. [2022-03-03 17:20:41,425 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 29341 transitions. Word has length 152 [2022-03-03 17:20:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:41,425 INFO L470 AbstractCegarLoop]: Abstraction has 10199 states and 29341 transitions. [2022-03-03 17:20:41,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 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) [2022-03-03 17:20:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 29341 transitions. [2022-03-03 17:20:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:41,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:41,440 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:41,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:41,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 17:20:41,650 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -552823237, now seen corresponding path program 14 times [2022-03-03 17:20:41,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:41,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138950366] [2022-03-03 17:20:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:41,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:41,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138950366] [2022-03-03 17:20:41,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138950366] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:41,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084757737] [2022-03-03 17:20:41,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:20:41,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:41,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:41,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:20:41,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:20:41,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:41,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:41,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:42,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:42,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084757737] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:42,467 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:42,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:20:42,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137016726] [2022-03-03 17:20:42,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:42,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:20:42,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:20:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:20:42,469 INFO L87 Difference]: Start difference. First operand 10199 states and 29341 transitions. Second operand has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) [2022-03-03 17:20:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:43,825 INFO L93 Difference]: Finished difference Result 18174 states and 51275 transitions. [2022-03-03 17:20:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:20:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) Word has length 152 [2022-03-03 17:20:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:43,861 INFO L225 Difference]: With dead ends: 18174 [2022-03-03 17:20:43,862 INFO L226 Difference]: Without dead ends: 18102 [2022-03-03 17:20:43,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=828, Invalid=4284, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 17:20:43,863 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 654 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:43,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 2602 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18102 states. [2022-03-03 17:20:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18102 to 11483. [2022-03-03 17:20:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11483 states, 11482 states have (on average 2.8935725483365267) internal successors, (33224), 11482 states have internal predecessors, (33224), 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) [2022-03-03 17:20:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11483 states to 11483 states and 33224 transitions. [2022-03-03 17:20:44,153 INFO L78 Accepts]: Start accepts. Automaton has 11483 states and 33224 transitions. Word has length 152 [2022-03-03 17:20:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:44,154 INFO L470 AbstractCegarLoop]: Abstraction has 11483 states and 33224 transitions. [2022-03-03 17:20:44,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) [2022-03-03 17:20:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11483 states and 33224 transitions. [2022-03-03 17:20:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:44,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:44,171 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:44,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:44,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:44,373 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1398387921, now seen corresponding path program 15 times [2022-03-03 17:20:44,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:44,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738265423] [2022-03-03 17:20:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:44,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:44,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738265423] [2022-03-03 17:20:44,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738265423] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:44,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570400367] [2022-03-03 17:20:44,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:20:44,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:44,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:44,500 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:44,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:20:44,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:20:44,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:44,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:44,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:44,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:45,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570400367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:45,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:45,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:20:45,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080200705] [2022-03-03 17:20:45,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:45,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:20:45,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:20:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:20:45,201 INFO L87 Difference]: Start difference. First operand 11483 states and 33224 transitions. Second operand has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) [2022-03-03 17:20:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:45,939 INFO L93 Difference]: Finished difference Result 13300 states and 37931 transitions. [2022-03-03 17:20:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:20:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) Word has length 152 [2022-03-03 17:20:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:45,965 INFO L225 Difference]: With dead ends: 13300 [2022-03-03 17:20:45,965 INFO L226 Difference]: Without dead ends: 13252 [2022-03-03 17:20:45,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=1217, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:20:45,966 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 359 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:45,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3200 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:20:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13252 states. [2022-03-03 17:20:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13252 to 11539. [2022-03-03 17:20:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11539 states, 11538 states have (on average 2.8928757150286013) internal successors, (33378), 11538 states have internal predecessors, (33378), 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) [2022-03-03 17:20:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11539 states to 11539 states and 33378 transitions. [2022-03-03 17:20:46,257 INFO L78 Accepts]: Start accepts. Automaton has 11539 states and 33378 transitions. Word has length 152 [2022-03-03 17:20:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:46,258 INFO L470 AbstractCegarLoop]: Abstraction has 11539 states and 33378 transitions. [2022-03-03 17:20:46,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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) [2022-03-03 17:20:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11539 states and 33378 transitions. [2022-03-03 17:20:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:46,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:46,277 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:46,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:46,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-03-03 17:20:46,479 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2017198003, now seen corresponding path program 16 times [2022-03-03 17:20:46,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:46,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959352648] [2022-03-03 17:20:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:46,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:46,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959352648] [2022-03-03 17:20:46,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959352648] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:46,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224287679] [2022-03-03 17:20:46,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:20:46,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:46,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:46,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:46,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:20:46,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:20:46,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:46,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:46,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:47,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:47,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224287679] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:47,219 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:47,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-03 17:20:47,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279248439] [2022-03-03 17:20:47,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:47,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:20:47,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:20:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:20:47,221 INFO L87 Difference]: Start difference. First operand 11539 states and 33378 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 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) [2022-03-03 17:20:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:47,771 INFO L93 Difference]: Finished difference Result 14977 states and 42926 transitions. [2022-03-03 17:20:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:20:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 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) Word has length 152 [2022-03-03 17:20:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:47,799 INFO L225 Difference]: With dead ends: 14977 [2022-03-03 17:20:47,799 INFO L226 Difference]: Without dead ends: 14917 [2022-03-03 17:20:47,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:20:47,800 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 337 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:47,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2076 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:20:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14917 states. [2022-03-03 17:20:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14917 to 11795. [2022-03-03 17:20:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11795 states, 11794 states have (on average 2.888926572833644) internal successors, (34072), 11794 states have internal predecessors, (34072), 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) [2022-03-03 17:20:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11795 states to 11795 states and 34072 transitions. [2022-03-03 17:20:48,043 INFO L78 Accepts]: Start accepts. Automaton has 11795 states and 34072 transitions. Word has length 152 [2022-03-03 17:20:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:48,043 INFO L470 AbstractCegarLoop]: Abstraction has 11795 states and 34072 transitions. [2022-03-03 17:20:48,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 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) [2022-03-03 17:20:48,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11795 states and 34072 transitions. [2022-03-03 17:20:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:48,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:48,065 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:48,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:48,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:48,283 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1800237599, now seen corresponding path program 17 times [2022-03-03 17:20:48,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:48,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981981833] [2022-03-03 17:20:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:48,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:48,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981981833] [2022-03-03 17:20:48,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981981833] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:48,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998517298] [2022-03-03 17:20:48,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:20:48,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:48,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:48,387 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:48,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:20:48,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:20:48,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:48,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:48,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:48,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:49,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998517298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:49,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:49,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-03 17:20:49,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316850198] [2022-03-03 17:20:49,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:20:49,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:20:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:20:49,105 INFO L87 Difference]: Start difference. First operand 11795 states and 34072 transitions. Second operand has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 18 states have internal predecessors, (186), 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) [2022-03-03 17:20:49,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:49,890 INFO L93 Difference]: Finished difference Result 15962 states and 45421 transitions. [2022-03-03 17:20:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:20:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 18 states have internal predecessors, (186), 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) Word has length 152 [2022-03-03 17:20:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:49,919 INFO L225 Difference]: With dead ends: 15962 [2022-03-03 17:20:49,920 INFO L226 Difference]: Without dead ends: 15872 [2022-03-03 17:20:49,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1372, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:20:49,921 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 298 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:49,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2404 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:20:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15872 states. [2022-03-03 17:20:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15872 to 11907. [2022-03-03 17:20:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11907 states, 11906 states have (on average 2.890643373089199) internal successors, (34416), 11906 states have internal predecessors, (34416), 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) [2022-03-03 17:20:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11907 states to 11907 states and 34416 transitions. [2022-03-03 17:20:50,215 INFO L78 Accepts]: Start accepts. Automaton has 11907 states and 34416 transitions. Word has length 152 [2022-03-03 17:20:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:50,215 INFO L470 AbstractCegarLoop]: Abstraction has 11907 states and 34416 transitions. [2022-03-03 17:20:50,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 18 states have internal predecessors, (186), 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) [2022-03-03 17:20:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11907 states and 34416 transitions. [2022-03-03 17:20:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:50,233 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:50,234 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:50,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-03 17:20:50,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:50,434 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash 890186109, now seen corresponding path program 18 times [2022-03-03 17:20:50,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:50,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686099800] [2022-03-03 17:20:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:50,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:50,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686099800] [2022-03-03 17:20:50,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686099800] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:50,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134063466] [2022-03-03 17:20:50,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:20:50,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:50,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:50,531 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:50,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:20:50,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:20:50,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:50,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:51,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134063466] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:51,173 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:51,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:20:51,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706113937] [2022-03-03 17:20:51,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:51,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:20:51,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:20:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:20:51,175 INFO L87 Difference]: Start difference. First operand 11907 states and 34416 transitions. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 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) [2022-03-03 17:20:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:52,614 INFO L93 Difference]: Finished difference Result 19013 states and 53534 transitions. [2022-03-03 17:20:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:20:52,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 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) Word has length 152 [2022-03-03 17:20:52,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:52,653 INFO L225 Difference]: With dead ends: 19013 [2022-03-03 17:20:52,654 INFO L226 Difference]: Without dead ends: 18878 [2022-03-03 17:20:52,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1172, Invalid=4680, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:20:52,655 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 734 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:52,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 2303 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:20:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18878 states. [2022-03-03 17:20:52,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18878 to 12043. [2022-03-03 17:20:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12043 states, 12042 states have (on average 2.8937053645573827) internal successors, (34846), 12042 states have internal predecessors, (34846), 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) [2022-03-03 17:20:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12043 states to 12043 states and 34846 transitions. [2022-03-03 17:20:52,924 INFO L78 Accepts]: Start accepts. Automaton has 12043 states and 34846 transitions. Word has length 152 [2022-03-03 17:20:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:52,924 INFO L470 AbstractCegarLoop]: Abstraction has 12043 states and 34846 transitions. [2022-03-03 17:20:52,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 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) [2022-03-03 17:20:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12043 states and 34846 transitions. [2022-03-03 17:20:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:52,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:52,942 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:52,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-03 17:20:53,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:53,143 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1668476171, now seen corresponding path program 19 times [2022-03-03 17:20:53,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:53,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399918722] [2022-03-03 17:20:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:53,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:53,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399918722] [2022-03-03 17:20:53,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399918722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:53,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900204658] [2022-03-03 17:20:53,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:20:53,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:53,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:53,235 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:53,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:20:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:53,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:53,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:53,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:53,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900204658] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:53,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:53,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:20:53,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527757150] [2022-03-03 17:20:53,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:53,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:20:53,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:20:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:20:53,937 INFO L87 Difference]: Start difference. First operand 12043 states and 34846 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) [2022-03-03 17:20:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:54,781 INFO L93 Difference]: Finished difference Result 16117 states and 45945 transitions. [2022-03-03 17:20:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:20:54,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) Word has length 152 [2022-03-03 17:20:54,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:54,811 INFO L225 Difference]: With dead ends: 16117 [2022-03-03 17:20:54,811 INFO L226 Difference]: Without dead ends: 16093 [2022-03-03 17:20:54,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=594, Invalid=2486, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:20:54,812 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 647 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:54,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 2122 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:20:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16093 states. [2022-03-03 17:20:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16093 to 11907. [2022-03-03 17:20:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11907 states, 11906 states have (on average 2.891987233327734) internal successors, (34432), 11906 states have internal predecessors, (34432), 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) [2022-03-03 17:20:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11907 states to 11907 states and 34432 transitions. [2022-03-03 17:20:55,028 INFO L78 Accepts]: Start accepts. Automaton has 11907 states and 34432 transitions. Word has length 152 [2022-03-03 17:20:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:55,028 INFO L470 AbstractCegarLoop]: Abstraction has 11907 states and 34432 transitions. [2022-03-03 17:20:55,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) [2022-03-03 17:20:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 11907 states and 34432 transitions. [2022-03-03 17:20:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:55,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:55,045 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:55,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-03 17:20:55,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:55,245 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:55,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2072627003, now seen corresponding path program 20 times [2022-03-03 17:20:55,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:55,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444608028] [2022-03-03 17:20:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:55,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:55,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:55,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444608028] [2022-03-03 17:20:55,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444608028] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:55,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313538324] [2022-03-03 17:20:55,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:20:55,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:55,352 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:55,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:20:55,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:20:55,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:55,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:55,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:55,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:56,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313538324] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:56,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:56,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:20:56,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45252334] [2022-03-03 17:20:56,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:56,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:56,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:56,041 INFO L87 Difference]: Start difference. First operand 11907 states and 34432 transitions. Second operand has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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) [2022-03-03 17:20:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:57,512 INFO L93 Difference]: Finished difference Result 18819 states and 53585 transitions. [2022-03-03 17:20:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:20:57,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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) Word has length 152 [2022-03-03 17:20:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:57,549 INFO L225 Difference]: With dead ends: 18819 [2022-03-03 17:20:57,549 INFO L226 Difference]: Without dead ends: 18759 [2022-03-03 17:20:57,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2295 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1410, Invalid=5232, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:20:57,550 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 517 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:57,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2382 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:20:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18759 states. [2022-03-03 17:20:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18759 to 12591. [2022-03-03 17:20:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12591 states, 12590 states have (on average 2.8985702938840348) internal successors, (36493), 12590 states have internal predecessors, (36493), 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) [2022-03-03 17:20:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12591 states to 12591 states and 36493 transitions. [2022-03-03 17:20:57,830 INFO L78 Accepts]: Start accepts. Automaton has 12591 states and 36493 transitions. Word has length 152 [2022-03-03 17:20:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:57,830 INFO L470 AbstractCegarLoop]: Abstraction has 12591 states and 36493 transitions. [2022-03-03 17:20:57,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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) [2022-03-03 17:20:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 12591 states and 36493 transitions. [2022-03-03 17:20:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:20:57,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:57,893 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:20:57,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-03 17:20:58,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-03 17:20:58,094 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1930546967, now seen corresponding path program 21 times [2022-03-03 17:20:58,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:58,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66880617] [2022-03-03 17:20:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:58,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:58,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:58,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66880617] [2022-03-03 17:20:58,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66880617] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:58,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791050071] [2022-03-03 17:20:58,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:20:58,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:58,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:58,216 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:58,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:20:58,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:20:58,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:58,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:20:58,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:58,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:20:59,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791050071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:59,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:59,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:20:59,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078780875] [2022-03-03 17:20:59,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:59,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:20:59,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:20:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:20:59,012 INFO L87 Difference]: Start difference. First operand 12591 states and 36493 transitions. Second operand has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) [2022-03-03 17:21:00,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:00,141 INFO L93 Difference]: Finished difference Result 18053 states and 51431 transitions. [2022-03-03 17:21:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:21:00,142 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) Word has length 152 [2022-03-03 17:21:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:00,179 INFO L225 Difference]: With dead ends: 18053 [2022-03-03 17:21:00,180 INFO L226 Difference]: Without dead ends: 18005 [2022-03-03 17:21:00,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=871, Invalid=3161, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 17:21:00,181 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 620 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:00,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2121 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18005 states. [2022-03-03 17:21:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18005 to 12063. [2022-03-03 17:21:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12063 states, 12062 states have (on average 2.8904825070469244) internal successors, (34865), 12062 states have internal predecessors, (34865), 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) [2022-03-03 17:21:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12063 states to 12063 states and 34865 transitions. [2022-03-03 17:21:00,432 INFO L78 Accepts]: Start accepts. Automaton has 12063 states and 34865 transitions. Word has length 152 [2022-03-03 17:21:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:00,432 INFO L470 AbstractCegarLoop]: Abstraction has 12063 states and 34865 transitions. [2022-03-03 17:21:00,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) [2022-03-03 17:21:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 12063 states and 34865 transitions. [2022-03-03 17:21:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:00,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:00,449 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:00,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-03 17:21:00,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 17:21:00,650 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:00,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1021769141, now seen corresponding path program 22 times [2022-03-03 17:21:00,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:00,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499735039] [2022-03-03 17:21:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:00,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:00,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499735039] [2022-03-03 17:21:00,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499735039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:00,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946551043] [2022-03-03 17:21:00,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:00,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:00,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:00,747 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:00,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:21:00,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:00,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:00,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:00,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:01,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:01,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946551043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:01,323 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:01,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-03 17:21:01,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535524833] [2022-03-03 17:21:01,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:21:01,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:21:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:21:01,325 INFO L87 Difference]: Start difference. First operand 12063 states and 34865 transitions. Second operand has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 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) [2022-03-03 17:21:01,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:01,807 INFO L93 Difference]: Finished difference Result 13873 states and 39812 transitions. [2022-03-03 17:21:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:21:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 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) Word has length 152 [2022-03-03 17:21:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:01,835 INFO L225 Difference]: With dead ends: 13873 [2022-03-03 17:21:01,836 INFO L226 Difference]: Without dead ends: 13837 [2022-03-03 17:21:01,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:21:01,836 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 451 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:01,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1657 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13837 states. [2022-03-03 17:21:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13837 to 12143. [2022-03-03 17:21:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 2.8898863449184646) internal successors, (35089), 12142 states have internal predecessors, (35089), 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) [2022-03-03 17:21:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 35089 transitions. [2022-03-03 17:21:02,091 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 35089 transitions. Word has length 152 [2022-03-03 17:21:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:02,091 INFO L470 AbstractCegarLoop]: Abstraction has 12143 states and 35089 transitions. [2022-03-03 17:21:02,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 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) [2022-03-03 17:21:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 35089 transitions. [2022-03-03 17:21:02,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:02,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:02,109 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:02,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-03 17:21:02,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 17:21:02,309 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 282402139, now seen corresponding path program 23 times [2022-03-03 17:21:02,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:02,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658031619] [2022-03-03 17:21:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:02,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:02,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:02,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658031619] [2022-03-03 17:21:02,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658031619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:02,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991445183] [2022-03-03 17:21:02,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:02,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:02,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:02,416 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:02,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:21:02,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:21:02,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:02,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:02,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:02,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:03,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991445183] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:03,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:03,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:03,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704878683] [2022-03-03 17:21:03,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:03,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:03,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:03,086 INFO L87 Difference]: Start difference. First operand 12143 states and 35089 transitions. Second operand has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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) [2022-03-03 17:21:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:04,987 INFO L93 Difference]: Finished difference Result 21825 states and 62089 transitions. [2022-03-03 17:21:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:21:04,987 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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) Word has length 152 [2022-03-03 17:21:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:05,034 INFO L225 Difference]: With dead ends: 21825 [2022-03-03 17:21:05,034 INFO L226 Difference]: Without dead ends: 21720 [2022-03-03 17:21:05,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1601, Invalid=7711, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 17:21:05,036 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 640 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:05,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2759 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:21:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21720 states. [2022-03-03 17:21:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21720 to 13247. [2022-03-03 17:21:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13247 states, 13246 states have (on average 2.9014796919824852) internal successors, (38433), 13246 states have internal predecessors, (38433), 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) [2022-03-03 17:21:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13247 states to 13247 states and 38433 transitions. [2022-03-03 17:21:05,392 INFO L78 Accepts]: Start accepts. Automaton has 13247 states and 38433 transitions. Word has length 152 [2022-03-03 17:21:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:05,392 INFO L470 AbstractCegarLoop]: Abstraction has 13247 states and 38433 transitions. [2022-03-03 17:21:05,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.368421052631579) internal successors, (178), 19 states have internal predecessors, (178), 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) [2022-03-03 17:21:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13247 states and 38433 transitions. [2022-03-03 17:21:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:05,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:05,413 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:05,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 17:21:05,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 17:21:05,622 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1060692201, now seen corresponding path program 24 times [2022-03-03 17:21:05,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:05,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625865039] [2022-03-03 17:21:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:05,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:05,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:05,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625865039] [2022-03-03 17:21:05,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625865039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:05,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540549226] [2022-03-03 17:21:05,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:05,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:05,720 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:05,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:21:06,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:06,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:06,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:06,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:06,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:06,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540549226] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:06,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:06,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:06,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386294061] [2022-03-03 17:21:06,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:06,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:06,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:06,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:06,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:06,584 INFO L87 Difference]: Start difference. First operand 13247 states and 38433 transitions. Second operand has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) [2022-03-03 17:21:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:08,065 INFO L93 Difference]: Finished difference Result 20165 states and 57569 transitions. [2022-03-03 17:21:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 17:21:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) Word has length 152 [2022-03-03 17:21:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:08,106 INFO L225 Difference]: With dead ends: 20165 [2022-03-03 17:21:08,106 INFO L226 Difference]: Without dead ends: 20129 [2022-03-03 17:21:08,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1106, Invalid=5700, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:21:08,107 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 573 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:08,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 2486 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20129 states. [2022-03-03 17:21:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20129 to 12515. [2022-03-03 17:21:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12515 states, 12514 states have (on average 2.893159661179479) internal successors, (36205), 12514 states have internal predecessors, (36205), 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) [2022-03-03 17:21:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12515 states to 12515 states and 36205 transitions. [2022-03-03 17:21:08,454 INFO L78 Accepts]: Start accepts. Automaton has 12515 states and 36205 transitions. Word has length 152 [2022-03-03 17:21:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:08,454 INFO L470 AbstractCegarLoop]: Abstraction has 12515 states and 36205 transitions. [2022-03-03 17:21:08,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) [2022-03-03 17:21:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12515 states and 36205 transitions. [2022-03-03 17:21:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:08,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:08,474 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:08,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:08,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-03 17:21:08,675 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1542488399, now seen corresponding path program 25 times [2022-03-03 17:21:08,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:08,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131934646] [2022-03-03 17:21:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:08,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:08,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131934646] [2022-03-03 17:21:08,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131934646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:08,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695726825] [2022-03-03 17:21:08,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:08,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:08,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:08,775 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:08,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:21:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:08,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:08,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:09,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:09,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695726825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:09,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:09,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:09,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601059582] [2022-03-03 17:21:09,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:09,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:09,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:09,415 INFO L87 Difference]: Start difference. First operand 12515 states and 36205 transitions. Second operand has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) [2022-03-03 17:21:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:10,400 INFO L93 Difference]: Finished difference Result 20189 states and 57577 transitions. [2022-03-03 17:21:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:21:10,401 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:21:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:10,439 INFO L225 Difference]: With dead ends: 20189 [2022-03-03 17:21:10,439 INFO L226 Difference]: Without dead ends: 20105 [2022-03-03 17:21:10,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=576, Invalid=2846, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:21:10,440 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 509 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:10,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 2230 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20105 states. [2022-03-03 17:21:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20105 to 12759. [2022-03-03 17:21:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12759 states, 12758 states have (on average 2.893243455087004) internal successors, (36912), 12758 states have internal predecessors, (36912), 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) [2022-03-03 17:21:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12759 states to 12759 states and 36912 transitions. [2022-03-03 17:21:10,700 INFO L78 Accepts]: Start accepts. Automaton has 12759 states and 36912 transitions. Word has length 152 [2022-03-03 17:21:10,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:10,701 INFO L470 AbstractCegarLoop]: Abstraction has 12759 states and 36912 transitions. [2022-03-03 17:21:10,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) [2022-03-03 17:21:10,701 INFO L276 IsEmpty]: Start isEmpty. Operand 12759 states and 36912 transitions. [2022-03-03 17:21:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:10,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:10,720 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:10,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:10,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-03 17:21:10,921 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash -517607033, now seen corresponding path program 26 times [2022-03-03 17:21:10,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:10,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976713071] [2022-03-03 17:21:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:10,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:11,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:11,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976713071] [2022-03-03 17:21:11,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976713071] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:11,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628067027] [2022-03-03 17:21:11,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:11,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:11,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:11,060 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:11,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:21:11,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:11,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:11,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:11,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:11,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:11,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628067027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:11,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:11,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:11,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814559298] [2022-03-03 17:21:11,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:11,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:11,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:11,697 INFO L87 Difference]: Start difference. First operand 12759 states and 36912 transitions. Second operand has 19 states, 19 states have (on average 9.421052631578947) internal successors, (179), 19 states have internal predecessors, (179), 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) [2022-03-03 17:21:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:13,070 INFO L93 Difference]: Finished difference Result 25046 states and 71245 transitions. [2022-03-03 17:21:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:21:13,071 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.421052631578947) internal successors, (179), 19 states have internal predecessors, (179), 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) Word has length 152 [2022-03-03 17:21:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:13,131 INFO L225 Difference]: With dead ends: 25046 [2022-03-03 17:21:13,131 INFO L226 Difference]: Without dead ends: 24971 [2022-03-03 17:21:13,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1043, Invalid=4069, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 17:21:13,132 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 795 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:13,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1893 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24971 states. [2022-03-03 17:21:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24971 to 14891. [2022-03-03 17:21:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14891 states, 14890 states have (on average 2.910073875083949) internal successors, (43331), 14890 states have internal predecessors, (43331), 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) [2022-03-03 17:21:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14891 states to 14891 states and 43331 transitions. [2022-03-03 17:21:13,529 INFO L78 Accepts]: Start accepts. Automaton has 14891 states and 43331 transitions. Word has length 152 [2022-03-03 17:21:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:13,529 INFO L470 AbstractCegarLoop]: Abstraction has 14891 states and 43331 transitions. [2022-03-03 17:21:13,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.421052631578947) internal successors, (179), 19 states have internal predecessors, (179), 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) [2022-03-03 17:21:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 14891 states and 43331 transitions. [2022-03-03 17:21:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:13,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:13,554 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:13,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-03 17:21:13,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:13,755 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -225813707, now seen corresponding path program 27 times [2022-03-03 17:21:13,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:13,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462847248] [2022-03-03 17:21:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:13,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:13,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462847248] [2022-03-03 17:21:13,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462847248] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:13,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788885489] [2022-03-03 17:21:13,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:13,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:13,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:13,857 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:13,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:21:14,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:21:14,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:14,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:14,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:14,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:21:14,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788885489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:14,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:14,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:14,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889305133] [2022-03-03 17:21:14,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:14,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:14,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:14,614 INFO L87 Difference]: Start difference. First operand 14891 states and 43331 transitions. Second operand has 19 states, 19 states have (on average 8.894736842105264) internal successors, (169), 19 states have internal predecessors, (169), 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) [2022-03-03 17:21:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:15,784 INFO L93 Difference]: Finished difference Result 24153 states and 68762 transitions. [2022-03-03 17:21:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:21:15,787 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.894736842105264) internal successors, (169), 19 states have internal predecessors, (169), 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) Word has length 152 [2022-03-03 17:21:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:15,913 INFO L225 Difference]: With dead ends: 24153 [2022-03-03 17:21:15,913 INFO L226 Difference]: Without dead ends: 24105 [2022-03-03 17:21:15,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=789, Invalid=3501, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 17:21:15,914 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 906 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:15,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 1753 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:15,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24105 states. [2022-03-03 17:21:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24105 to 14067. [2022-03-03 17:21:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14067 states, 14066 states have (on average 2.8961325181288213) internal successors, (40737), 14066 states have internal predecessors, (40737), 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) [2022-03-03 17:21:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14067 states to 14067 states and 40737 transitions. [2022-03-03 17:21:16,208 INFO L78 Accepts]: Start accepts. Automaton has 14067 states and 40737 transitions. Word has length 152 [2022-03-03 17:21:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:16,208 INFO L470 AbstractCegarLoop]: Abstraction has 14067 states and 40737 transitions. [2022-03-03 17:21:16,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.894736842105264) internal successors, (169), 19 states have internal predecessors, (169), 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) [2022-03-03 17:21:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 14067 states and 40737 transitions. [2022-03-03 17:21:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:16,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:16,231 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:16,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-03 17:21:16,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:16,432 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash 682964119, now seen corresponding path program 28 times [2022-03-03 17:21:16,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:16,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145757930] [2022-03-03 17:21:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:16,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:16,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145757930] [2022-03-03 17:21:16,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145757930] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:16,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537203891] [2022-03-03 17:21:16,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:16,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:16,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:16,535 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:16,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:21:16,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:16,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:16,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:16,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:17,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:17,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537203891] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:17,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:17,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:17,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296980213] [2022-03-03 17:21:17,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:17,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:17,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:17,222 INFO L87 Difference]: Start difference. First operand 14067 states and 40737 transitions. Second operand has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) [2022-03-03 17:21:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:18,698 INFO L93 Difference]: Finished difference Result 25999 states and 73893 transitions. [2022-03-03 17:21:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 17:21:18,698 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:21:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:18,756 INFO L225 Difference]: With dead ends: 25999 [2022-03-03 17:21:18,756 INFO L226 Difference]: Without dead ends: 25915 [2022-03-03 17:21:18,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1060, Invalid=5260, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:21:18,757 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 809 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:18,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2896 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25915 states. [2022-03-03 17:21:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25915 to 12947. [2022-03-03 17:21:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12947 states, 12946 states have (on average 2.892090220917658) internal successors, (37441), 12946 states have internal predecessors, (37441), 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) [2022-03-03 17:21:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12947 states to 12947 states and 37441 transitions. [2022-03-03 17:21:19,187 INFO L78 Accepts]: Start accepts. Automaton has 12947 states and 37441 transitions. Word has length 152 [2022-03-03 17:21:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:19,188 INFO L470 AbstractCegarLoop]: Abstraction has 12947 states and 37441 transitions. [2022-03-03 17:21:19,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) [2022-03-03 17:21:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 12947 states and 37441 transitions. [2022-03-03 17:21:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:19,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:19,208 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:19,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-03 17:21:19,409 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1660792019, now seen corresponding path program 29 times [2022-03-03 17:21:19,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:19,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792082286] [2022-03-03 17:21:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:19,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:19,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792082286] [2022-03-03 17:21:19,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792082286] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:19,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464987344] [2022-03-03 17:21:19,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:19,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:19,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:19,512 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:19,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:21:19,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:21:19,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:19,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:19,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:19,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:20,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464987344] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:20,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:20,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:20,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754280323] [2022-03-03 17:21:20,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:20,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:20,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:20,188 INFO L87 Difference]: Start difference. First operand 12947 states and 37441 transitions. Second operand has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) [2022-03-03 17:21:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:20,596 INFO L93 Difference]: Finished difference Result 14325 states and 41043 transitions. [2022-03-03 17:21:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 17:21:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:21:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:20,624 INFO L225 Difference]: With dead ends: 14325 [2022-03-03 17:21:20,624 INFO L226 Difference]: Without dead ends: 14277 [2022-03-03 17:21:20,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:21:20,625 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 388 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:20,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 2014 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2022-03-03 17:21:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 12919. [2022-03-03 17:21:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12919 states, 12918 states have (on average 2.89177891314445) internal successors, (37356), 12918 states have internal predecessors, (37356), 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) [2022-03-03 17:21:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12919 states to 12919 states and 37356 transitions. [2022-03-03 17:21:20,851 INFO L78 Accepts]: Start accepts. Automaton has 12919 states and 37356 transitions. Word has length 152 [2022-03-03 17:21:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 12919 states and 37356 transitions. [2022-03-03 17:21:20,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.095238095238095) internal successors, (170), 21 states have internal predecessors, (170), 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) [2022-03-03 17:21:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12919 states and 37356 transitions. [2022-03-03 17:21:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:20,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:20,872 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:20,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-03 17:21:21,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:21,072 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1919825841, now seen corresponding path program 30 times [2022-03-03 17:21:21,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:21,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752500547] [2022-03-03 17:21:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:21,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:21,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752500547] [2022-03-03 17:21:21,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752500547] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:21,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857092427] [2022-03-03 17:21:21,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:21,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:21,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:21,168 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:21,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:21:21,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:21,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:21,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:21,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:21,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:21,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857092427] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:21,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:21,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:21,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973265348] [2022-03-03 17:21:21,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:21,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:21,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:21,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:21,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:21,874 INFO L87 Difference]: Start difference. First operand 12919 states and 37356 transitions. Second operand has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 21 states have internal predecessors, (181), 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) [2022-03-03 17:21:22,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:22,236 INFO L93 Difference]: Finished difference Result 14285 states and 40913 transitions. [2022-03-03 17:21:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 17:21:22,237 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 21 states have internal predecessors, (181), 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) Word has length 152 [2022-03-03 17:21:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:22,263 INFO L225 Difference]: With dead ends: 14285 [2022-03-03 17:21:22,263 INFO L226 Difference]: Without dead ends: 14195 [2022-03-03 17:21:22,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:21:22,264 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 350 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:22,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1404 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14195 states. [2022-03-03 17:21:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14195 to 12919. [2022-03-03 17:21:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12919 states, 12918 states have (on average 2.889611394952779) internal successors, (37328), 12918 states have internal predecessors, (37328), 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) [2022-03-03 17:21:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12919 states to 12919 states and 37328 transitions. [2022-03-03 17:21:22,544 INFO L78 Accepts]: Start accepts. Automaton has 12919 states and 37328 transitions. Word has length 152 [2022-03-03 17:21:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:22,544 INFO L470 AbstractCegarLoop]: Abstraction has 12919 states and 37328 transitions. [2022-03-03 17:21:22,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 21 states have internal predecessors, (181), 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) [2022-03-03 17:21:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12919 states and 37328 transitions. [2022-03-03 17:21:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:22,565 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:22,565 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:22,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-03 17:21:22,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-03 17:21:22,766 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:22,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1011317457, now seen corresponding path program 31 times [2022-03-03 17:21:22,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:22,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089468203] [2022-03-03 17:21:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:22,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:22,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089468203] [2022-03-03 17:21:22,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089468203] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:22,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893397653] [2022-03-03 17:21:22,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:22,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:22,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:22,878 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:22,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:21:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:23,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:23,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:23,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:23,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893397653] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:23,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:23,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-03 17:21:23,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649437249] [2022-03-03 17:21:23,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:23,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:21:23,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:21:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:21:23,523 INFO L87 Difference]: Start difference. First operand 12919 states and 37328 transitions. Second operand has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 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) [2022-03-03 17:21:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:25,084 INFO L93 Difference]: Finished difference Result 30380 states and 86821 transitions. [2022-03-03 17:21:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 17:21:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 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) Word has length 152 [2022-03-03 17:21:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:25,153 INFO L225 Difference]: With dead ends: 30380 [2022-03-03 17:21:25,153 INFO L226 Difference]: Without dead ends: 30200 [2022-03-03 17:21:25,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2444 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1174, Invalid=5798, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:21:25,154 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1093 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:25,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 2612 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30200 states. [2022-03-03 17:21:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30200 to 16138. [2022-03-03 17:21:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 16137 states have (on average 2.9097106029621367) internal successors, (46954), 16137 states have internal predecessors, (46954), 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) [2022-03-03 17:21:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 46954 transitions. [2022-03-03 17:21:25,553 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 46954 transitions. Word has length 152 [2022-03-03 17:21:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:25,554 INFO L470 AbstractCegarLoop]: Abstraction has 16138 states and 46954 transitions. [2022-03-03 17:21:25,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 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) [2022-03-03 17:21:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 46954 transitions. [2022-03-03 17:21:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:25,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:25,578 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:25,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:25,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:25,779 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash -274853333, now seen corresponding path program 32 times [2022-03-03 17:21:25,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:25,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122470733] [2022-03-03 17:21:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:25,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:25,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122470733] [2022-03-03 17:21:25,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122470733] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:25,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208042718] [2022-03-03 17:21:25,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:25,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:25,879 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:25,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:21:26,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:26,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:26,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:26,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:26,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:26,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208042718] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:26,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:26,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:26,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787447115] [2022-03-03 17:21:26,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:26,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:26,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:26,554 INFO L87 Difference]: Start difference. First operand 16138 states and 46954 transitions. Second operand has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 19 states have internal predecessors, (170), 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) [2022-03-03 17:21:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:27,889 INFO L93 Difference]: Finished difference Result 31467 states and 90175 transitions. [2022-03-03 17:21:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:21:27,889 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 19 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:21:27,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:27,956 INFO L225 Difference]: With dead ends: 31467 [2022-03-03 17:21:27,956 INFO L226 Difference]: Without dead ends: 31395 [2022-03-03 17:21:27,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1043, Invalid=4069, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 17:21:27,957 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 894 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:27,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 1962 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31395 states. [2022-03-03 17:21:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31395 to 17787. [2022-03-03 17:21:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17787 states, 17786 states have (on average 2.9134712695378386) internal successors, (51819), 17786 states have internal predecessors, (51819), 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) [2022-03-03 17:21:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17787 states to 17787 states and 51819 transitions. [2022-03-03 17:21:28,352 INFO L78 Accepts]: Start accepts. Automaton has 17787 states and 51819 transitions. Word has length 152 [2022-03-03 17:21:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:28,352 INFO L470 AbstractCegarLoop]: Abstraction has 17787 states and 51819 transitions. [2022-03-03 17:21:28,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 19 states have internal predecessors, (170), 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) [2022-03-03 17:21:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 17787 states and 51819 transitions. [2022-03-03 17:21:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:28,378 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:28,378 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:28,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:28,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-03 17:21:28,588 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:28,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1258398349, now seen corresponding path program 33 times [2022-03-03 17:21:28,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:28,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146405942] [2022-03-03 17:21:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:28,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:28,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:28,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146405942] [2022-03-03 17:21:28,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146405942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:28,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570219302] [2022-03-03 17:21:28,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:28,690 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:21:28,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:21:28,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:28,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:28,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:29,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:21:29,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570219302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:29,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:29,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:29,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900890282] [2022-03-03 17:21:29,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:29,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:29,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:29,411 INFO L87 Difference]: Start difference. First operand 17787 states and 51819 transitions. Second operand has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) [2022-03-03 17:21:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:30,516 INFO L93 Difference]: Finished difference Result 25004 states and 72093 transitions. [2022-03-03 17:21:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:21:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) Word has length 152 [2022-03-03 17:21:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:30,565 INFO L225 Difference]: With dead ends: 25004 [2022-03-03 17:21:30,565 INFO L226 Difference]: Without dead ends: 24944 [2022-03-03 17:21:30,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=532, Invalid=2438, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:21:30,566 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 362 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:30,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2432 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24944 states. [2022-03-03 17:21:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24944 to 18847. [2022-03-03 17:21:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18847 states, 18846 states have (on average 2.912766634829672) internal successors, (54894), 18846 states have internal predecessors, (54894), 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) [2022-03-03 17:21:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18847 states to 18847 states and 54894 transitions. [2022-03-03 17:21:30,927 INFO L78 Accepts]: Start accepts. Automaton has 18847 states and 54894 transitions. Word has length 152 [2022-03-03 17:21:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:30,927 INFO L470 AbstractCegarLoop]: Abstraction has 18847 states and 54894 transitions. [2022-03-03 17:21:30,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) [2022-03-03 17:21:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 18847 states and 54894 transitions. [2022-03-03 17:21:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:30,954 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:30,954 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:30,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:31,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-03 17:21:31,155 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:31,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2048501167, now seen corresponding path program 34 times [2022-03-03 17:21:31,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:31,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254005459] [2022-03-03 17:21:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:31,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:31,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254005459] [2022-03-03 17:21:31,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254005459] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:31,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584332570] [2022-03-03 17:21:31,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:31,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:31,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:31,260 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:31,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:21:31,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:31,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:31,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:31,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:21:31,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584332570] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:31,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:31,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:31,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66951662] [2022-03-03 17:21:31,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:31,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:31,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:31,965 INFO L87 Difference]: Start difference. First operand 18847 states and 54894 transitions. Second operand has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) [2022-03-03 17:21:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:33,031 INFO L93 Difference]: Finished difference Result 25266 states and 72597 transitions. [2022-03-03 17:21:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:21:33,032 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) Word has length 152 [2022-03-03 17:21:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:33,088 INFO L225 Difference]: With dead ends: 25266 [2022-03-03 17:21:33,088 INFO L226 Difference]: Without dead ends: 25206 [2022-03-03 17:21:33,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=458, Invalid=2194, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:21:33,089 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 465 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:33,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 2145 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25206 states. [2022-03-03 17:21:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25206 to 19971. [2022-03-03 17:21:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19971 states, 19970 states have (on average 2.915823735603405) internal successors, (58229), 19970 states have internal predecessors, (58229), 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) [2022-03-03 17:21:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19971 states to 19971 states and 58229 transitions. [2022-03-03 17:21:33,587 INFO L78 Accepts]: Start accepts. Automaton has 19971 states and 58229 transitions. Word has length 152 [2022-03-03 17:21:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:33,587 INFO L470 AbstractCegarLoop]: Abstraction has 19971 states and 58229 transitions. [2022-03-03 17:21:33,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) [2022-03-03 17:21:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 19971 states and 58229 transitions. [2022-03-03 17:21:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:33,619 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:33,620 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:33,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:33,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 17:21:33,821 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash -33740467, now seen corresponding path program 35 times [2022-03-03 17:21:33,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:33,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109382862] [2022-03-03 17:21:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:33,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:33,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109382862] [2022-03-03 17:21:33,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109382862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:33,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158115211] [2022-03-03 17:21:33,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:33,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:33,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:33,914 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:33,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:21:34,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:21:34,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:34,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:34,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:34,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:21:34,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158115211] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:34,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:34,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-03-03 17:21:34,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594058557] [2022-03-03 17:21:34,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:34,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:34,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:34,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:34,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:34,564 INFO L87 Difference]: Start difference. First operand 19971 states and 58229 transitions. Second operand has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) [2022-03-03 17:21:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:35,809 INFO L93 Difference]: Finished difference Result 28407 states and 81982 transitions. [2022-03-03 17:21:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:21:35,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) Word has length 152 [2022-03-03 17:21:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:35,875 INFO L225 Difference]: With dead ends: 28407 [2022-03-03 17:21:35,875 INFO L226 Difference]: Without dead ends: 28347 [2022-03-03 17:21:35,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=608, Invalid=3174, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:21:35,876 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 477 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:35,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 2443 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28347 states. [2022-03-03 17:21:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28347 to 20907. [2022-03-03 17:21:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20907 states, 20906 states have (on average 2.915670142542811) internal successors, (60955), 20906 states have internal predecessors, (60955), 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) [2022-03-03 17:21:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20907 states to 20907 states and 60955 transitions. [2022-03-03 17:21:36,409 INFO L78 Accepts]: Start accepts. Automaton has 20907 states and 60955 transitions. Word has length 152 [2022-03-03 17:21:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 20907 states and 60955 transitions. [2022-03-03 17:21:36,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 19 states have internal predecessors, (175), 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) [2022-03-03 17:21:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20907 states and 60955 transitions. [2022-03-03 17:21:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:36,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:36,443 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:36,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-03 17:21:36,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-03-03 17:21:36,644 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1202296905, now seen corresponding path program 36 times [2022-03-03 17:21:36,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:36,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966968439] [2022-03-03 17:21:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:36,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:36,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966968439] [2022-03-03 17:21:36,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966968439] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:36,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644182535] [2022-03-03 17:21:36,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:36,758 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:36,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:21:36,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:36,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:36,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:36,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:37,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:37,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644182535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:37,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:37,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-03 17:21:37,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786320432] [2022-03-03 17:21:37,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:37,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:21:37,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:21:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:21:37,393 INFO L87 Difference]: Start difference. First operand 20907 states and 60955 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 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) [2022-03-03 17:21:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:38,041 INFO L93 Difference]: Finished difference Result 23713 states and 68748 transitions. [2022-03-03 17:21:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:21:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 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) Word has length 152 [2022-03-03 17:21:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:38,091 INFO L225 Difference]: With dead ends: 23713 [2022-03-03 17:21:38,091 INFO L226 Difference]: Without dead ends: 23665 [2022-03-03 17:21:38,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:21:38,092 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 330 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:38,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2099 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:21:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23665 states. [2022-03-03 17:21:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23665 to 21043. [2022-03-03 17:21:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21043 states, 21042 states have (on average 2.915549852675601) internal successors, (61349), 21042 states have internal predecessors, (61349), 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) [2022-03-03 17:21:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21043 states to 21043 states and 61349 transitions. [2022-03-03 17:21:38,663 INFO L78 Accepts]: Start accepts. Automaton has 21043 states and 61349 transitions. Word has length 152 [2022-03-03 17:21:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:38,664 INFO L470 AbstractCegarLoop]: Abstraction has 21043 states and 61349 transitions. [2022-03-03 17:21:38,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 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) [2022-03-03 17:21:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 21043 states and 61349 transitions. [2022-03-03 17:21:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:38,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:38,700 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:38,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-03 17:21:38,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:38,901 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1226993523, now seen corresponding path program 37 times [2022-03-03 17:21:39,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:39,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983304616] [2022-03-03 17:21:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:39,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:39,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983304616] [2022-03-03 17:21:39,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983304616] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:39,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656721774] [2022-03-03 17:21:39,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:39,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:39,140 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:39,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:21:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:39,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:39,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:39,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:39,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656721774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:39,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:39,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:21:39,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439181514] [2022-03-03 17:21:39,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:39,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:21:39,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:21:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:21:39,842 INFO L87 Difference]: Start difference. First operand 21043 states and 61349 transitions. Second operand has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 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) [2022-03-03 17:21:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:40,842 INFO L93 Difference]: Finished difference Result 25386 states and 73261 transitions. [2022-03-03 17:21:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:21:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:21:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:40,899 INFO L225 Difference]: With dead ends: 25386 [2022-03-03 17:21:40,900 INFO L226 Difference]: Without dead ends: 25311 [2022-03-03 17:21:40,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:21:40,901 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 517 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:40,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 1993 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25311 states. [2022-03-03 17:21:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25311 to 21386. [2022-03-03 17:21:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21386 states, 21385 states have (on average 2.9163432312368482) internal successors, (62366), 21385 states have internal predecessors, (62366), 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) [2022-03-03 17:21:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21386 states to 21386 states and 62366 transitions. [2022-03-03 17:21:41,471 INFO L78 Accepts]: Start accepts. Automaton has 21386 states and 62366 transitions. Word has length 152 [2022-03-03 17:21:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:41,471 INFO L470 AbstractCegarLoop]: Abstraction has 21386 states and 62366 transitions. [2022-03-03 17:21:41,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 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) [2022-03-03 17:21:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 21386 states and 62366 transitions. [2022-03-03 17:21:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:41,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:41,502 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:41,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:41,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:41,703 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1861751829, now seen corresponding path program 38 times [2022-03-03 17:21:41,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:41,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147538122] [2022-03-03 17:21:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:41,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:41,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147538122] [2022-03-03 17:21:41,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147538122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:41,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275262591] [2022-03-03 17:21:41,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:21:41,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:41,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:41,800 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:41,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:21:42,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:21:42,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:42,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:42,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:42,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275262591] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:42,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:42,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:21:42,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656024944] [2022-03-03 17:21:42,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:42,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:21:42,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:21:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:21:42,438 INFO L87 Difference]: Start difference. First operand 21386 states and 62366 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) [2022-03-03 17:21:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:43,847 INFO L93 Difference]: Finished difference Result 26445 states and 76053 transitions. [2022-03-03 17:21:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:21:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) Word has length 152 [2022-03-03 17:21:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:43,902 INFO L225 Difference]: With dead ends: 26445 [2022-03-03 17:21:43,902 INFO L226 Difference]: Without dead ends: 26325 [2022-03-03 17:21:43,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1963 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1172, Invalid=4680, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:21:43,902 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 490 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:43,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2557 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26325 states. [2022-03-03 17:21:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26325 to 21107. [2022-03-03 17:21:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21107 states, 21106 states have (on average 2.916564010234057) internal successors, (61557), 21106 states have internal predecessors, (61557), 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) [2022-03-03 17:21:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21107 states to 21107 states and 61557 transitions. [2022-03-03 17:21:44,401 INFO L78 Accepts]: Start accepts. Automaton has 21107 states and 61557 transitions. Word has length 152 [2022-03-03 17:21:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:44,401 INFO L470 AbstractCegarLoop]: Abstraction has 21107 states and 61557 transitions. [2022-03-03 17:21:44,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) [2022-03-03 17:21:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 21107 states and 61557 transitions. [2022-03-03 17:21:44,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:44,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:44,434 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:44,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-03 17:21:44,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-03-03 17:21:44,635 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -992602803, now seen corresponding path program 39 times [2022-03-03 17:21:44,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:44,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335282852] [2022-03-03 17:21:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:44,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:44,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:44,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335282852] [2022-03-03 17:21:44,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335282852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:44,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120885075] [2022-03-03 17:21:44,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:21:44,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:44,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:44,718 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:44,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:21:44,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:21:44,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:44,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:44,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:45,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:45,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120885075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:45,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:45,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:45,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014243507] [2022-03-03 17:21:45,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:45,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:45,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:45,372 INFO L87 Difference]: Start difference. First operand 21107 states and 61557 transitions. Second operand has 19 states, 19 states have (on average 9.105263157894736) internal successors, (173), 19 states have internal predecessors, (173), 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) [2022-03-03 17:21:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:47,049 INFO L93 Difference]: Finished difference Result 29002 states and 83653 transitions. [2022-03-03 17:21:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:21:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.105263157894736) internal successors, (173), 19 states have internal predecessors, (173), 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) Word has length 152 [2022-03-03 17:21:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:47,123 INFO L225 Difference]: With dead ends: 29002 [2022-03-03 17:21:47,123 INFO L226 Difference]: Without dead ends: 28942 [2022-03-03 17:21:47,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1146, Invalid=5994, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 17:21:47,124 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 608 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:47,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 2567 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:21:47,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28942 states. [2022-03-03 17:21:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28942 to 21746. [2022-03-03 17:21:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21746 states, 21745 states have (on average 2.9167164865486317) internal successors, (63424), 21745 states have internal predecessors, (63424), 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) [2022-03-03 17:21:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21746 states to 21746 states and 63424 transitions. [2022-03-03 17:21:47,692 INFO L78 Accepts]: Start accepts. Automaton has 21746 states and 63424 transitions. Word has length 152 [2022-03-03 17:21:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:47,692 INFO L470 AbstractCegarLoop]: Abstraction has 21746 states and 63424 transitions. [2022-03-03 17:21:47,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.105263157894736) internal successors, (173), 19 states have internal predecessors, (173), 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) [2022-03-03 17:21:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 21746 states and 63424 transitions. [2022-03-03 17:21:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:47,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:47,724 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:47,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:21:47,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:47,925 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1627361109, now seen corresponding path program 40 times [2022-03-03 17:21:47,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:47,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830421142] [2022-03-03 17:21:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:47,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:48,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830421142] [2022-03-03 17:21:48,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830421142] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:48,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510032326] [2022-03-03 17:21:48,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:21:48,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:48,001 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:48,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:21:48,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:21:48,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:48,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:48,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:48,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:48,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510032326] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:48,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:48,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:48,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523270583] [2022-03-03 17:21:48,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:48,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:48,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:48,644 INFO L87 Difference]: Start difference. First operand 21746 states and 63424 transitions. Second operand has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) [2022-03-03 17:21:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:50,593 INFO L93 Difference]: Finished difference Result 29209 states and 84107 transitions. [2022-03-03 17:21:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:21:50,594 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) Word has length 152 [2022-03-03 17:21:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:50,700 INFO L225 Difference]: With dead ends: 29209 [2022-03-03 17:21:50,700 INFO L226 Difference]: Without dead ends: 29149 [2022-03-03 17:21:50,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3295 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1601, Invalid=7711, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 17:21:50,701 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 613 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:50,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 2354 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:21:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29149 states. [2022-03-03 17:21:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29149 to 22723. [2022-03-03 17:21:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22723 states, 22722 states have (on average 2.9147522225156237) internal successors, (66229), 22722 states have internal predecessors, (66229), 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) [2022-03-03 17:21:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22723 states to 22723 states and 66229 transitions. [2022-03-03 17:21:51,380 INFO L78 Accepts]: Start accepts. Automaton has 22723 states and 66229 transitions. Word has length 152 [2022-03-03 17:21:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:51,381 INFO L470 AbstractCegarLoop]: Abstraction has 22723 states and 66229 transitions. [2022-03-03 17:21:51,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.842105263157896) internal successors, (168), 19 states have internal predecessors, (168), 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) [2022-03-03 17:21:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 22723 states and 66229 transitions. [2022-03-03 17:21:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:51,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:51,413 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:51,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 17:21:51,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-03 17:21:51,614 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash 870672815, now seen corresponding path program 41 times [2022-03-03 17:21:51,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:51,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248386792] [2022-03-03 17:21:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:51,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:51,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248386792] [2022-03-03 17:21:51,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248386792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:51,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031800296] [2022-03-03 17:21:51,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:21:51,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:51,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:51,704 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:51,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:21:51,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:21:51,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:51,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:51,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:52,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:52,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031800296] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:52,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:52,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:52,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974957783] [2022-03-03 17:21:52,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:52,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:52,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:52,460 INFO L87 Difference]: Start difference. First operand 22723 states and 66229 transitions. Second operand has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 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) [2022-03-03 17:21:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:53,730 INFO L93 Difference]: Finished difference Result 30915 states and 89048 transitions. [2022-03-03 17:21:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:21:53,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 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) Word has length 152 [2022-03-03 17:21:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:53,835 INFO L225 Difference]: With dead ends: 30915 [2022-03-03 17:21:53,836 INFO L226 Difference]: Without dead ends: 30855 [2022-03-03 17:21:53,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 17:21:53,836 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 755 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:53,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1982 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30855 states. [2022-03-03 17:21:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30855 to 25142. [2022-03-03 17:21:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25142 states, 25141 states have (on average 2.9140845630643173) internal successors, (73263), 25141 states have internal predecessors, (73263), 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) [2022-03-03 17:21:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 73263 transitions. [2022-03-03 17:21:54,573 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 73263 transitions. Word has length 152 [2022-03-03 17:21:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:54,574 INFO L470 AbstractCegarLoop]: Abstraction has 25142 states and 73263 transitions. [2022-03-03 17:21:54,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 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) [2022-03-03 17:21:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 73263 transitions. [2022-03-03 17:21:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:54,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:54,618 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:54,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-03 17:21:54,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:54,819 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 235914509, now seen corresponding path program 42 times [2022-03-03 17:21:54,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:54,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136542926] [2022-03-03 17:21:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:54,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:54,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136542926] [2022-03-03 17:21:54,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136542926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:54,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331877655] [2022-03-03 17:21:54,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:21:54,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:54,894 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:54,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:21:55,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:21:55,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:21:55,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:55,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:55,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:55,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331877655] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:55,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:55,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-03 17:21:55,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543067648] [2022-03-03 17:21:55,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:55,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:21:55,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:21:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:21:55,615 INFO L87 Difference]: Start difference. First operand 25142 states and 73263 transitions. Second operand has 19 states, 19 states have (on average 8.789473684210526) internal successors, (167), 19 states have internal predecessors, (167), 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) [2022-03-03 17:21:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:57,248 INFO L93 Difference]: Finished difference Result 31271 states and 90046 transitions. [2022-03-03 17:21:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:21:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.789473684210526) internal successors, (167), 19 states have internal predecessors, (167), 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) Word has length 152 [2022-03-03 17:21:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:57,329 INFO L225 Difference]: With dead ends: 31271 [2022-03-03 17:21:57,330 INFO L226 Difference]: Without dead ends: 31223 [2022-03-03 17:21:57,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1410, Invalid=5232, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:21:57,330 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 699 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:57,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 2110 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:21:57,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31223 states. [2022-03-03 17:21:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31223 to 24951. [2022-03-03 17:21:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24951 states, 24950 states have (on average 2.911743486973948) internal successors, (72648), 24950 states have internal predecessors, (72648), 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) [2022-03-03 17:21:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24951 states to 24951 states and 72648 transitions. [2022-03-03 17:21:57,936 INFO L78 Accepts]: Start accepts. Automaton has 24951 states and 72648 transitions. Word has length 152 [2022-03-03 17:21:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:21:57,937 INFO L470 AbstractCegarLoop]: Abstraction has 24951 states and 72648 transitions. [2022-03-03 17:21:57,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.789473684210526) internal successors, (167), 19 states have internal predecessors, (167), 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) [2022-03-03 17:21:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 24951 states and 72648 transitions. [2022-03-03 17:21:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:21:57,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:21:57,979 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:21:57,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-03 17:21:58,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:58,179 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:21:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:21:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 627413935, now seen corresponding path program 43 times [2022-03-03 17:21:58,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:21:58,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982438963] [2022-03-03 17:21:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:21:58,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:21:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:58,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:21:58,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982438963] [2022-03-03 17:21:58,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982438963] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:21:58,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710911810] [2022-03-03 17:21:58,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:21:58,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:21:58,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:21:58,292 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:21:58,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:21:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:21:58,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:21:58,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:21:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:58,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:21:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:21:58,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710911810] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:21:58,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:21:58,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-03 17:21:58,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358185262] [2022-03-03 17:21:58,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:21:58,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:21:58,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:21:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:21:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:21:58,943 INFO L87 Difference]: Start difference. First operand 24951 states and 72648 transitions. Second operand has 20 states, 20 states have (on average 8.7) internal successors, (174), 20 states have internal predecessors, (174), 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) [2022-03-03 17:21:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:21:59,635 INFO L93 Difference]: Finished difference Result 26690 states and 77374 transitions. [2022-03-03 17:21:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:21:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.7) internal successors, (174), 20 states have internal predecessors, (174), 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) Word has length 152 [2022-03-03 17:21:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:21:59,696 INFO L225 Difference]: With dead ends: 26690 [2022-03-03 17:21:59,697 INFO L226 Difference]: Without dead ends: 26645 [2022-03-03 17:21:59,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:21:59,697 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 442 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:21:59,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1876 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:21:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2022-03-03 17:22:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 24939. [2022-03-03 17:22:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 24938 states have (on average 2.9119817146523377) internal successors, (72619), 24938 states have internal predecessors, (72619), 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) [2022-03-03 17:22:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 72619 transitions. [2022-03-03 17:22:00,316 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 72619 transitions. Word has length 152 [2022-03-03 17:22:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:00,316 INFO L470 AbstractCegarLoop]: Abstraction has 24939 states and 72619 transitions. [2022-03-03 17:22:00,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.7) internal successors, (174), 20 states have internal predecessors, (174), 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) [2022-03-03 17:22:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 72619 transitions. [2022-03-03 17:22:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:22:00,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:00,352 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:22:00,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-03 17:22:00,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-03 17:22:00,553 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash -400957809, now seen corresponding path program 44 times [2022-03-03 17:22:00,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:00,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004700266] [2022-03-03 17:22:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:00,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:22:00,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:00,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004700266] [2022-03-03 17:22:00,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004700266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:00,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306000106] [2022-03-03 17:22:00,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:22:00,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:00,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:00,638 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:00,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:22:00,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:22:00,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:00,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:22:00,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:22:01,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:22:01,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306000106] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:22:01,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:22:01,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-03 17:22:01,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875859282] [2022-03-03 17:22:01,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:22:01,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:22:01,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:22:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:22:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:22:01,330 INFO L87 Difference]: Start difference. First operand 24939 states and 72619 transitions. Second operand has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 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) [2022-03-03 17:22:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:22:01,839 INFO L93 Difference]: Finished difference Result 31297 states and 90465 transitions. [2022-03-03 17:22:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:22:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:22:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:22:01,915 INFO L225 Difference]: With dead ends: 31297 [2022-03-03 17:22:01,916 INFO L226 Difference]: Without dead ends: 31174 [2022-03-03 17:22:01,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:22:01,916 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 318 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:22:01,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1955 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:22:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31174 states. [2022-03-03 17:22:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31174 to 24999. [2022-03-03 17:22:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24999 states, 24998 states have (on average 2.910152812224978) internal successors, (72748), 24998 states have internal predecessors, (72748), 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) [2022-03-03 17:22:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24999 states to 24999 states and 72748 transitions. [2022-03-03 17:22:02,758 INFO L78 Accepts]: Start accepts. Automaton has 24999 states and 72748 transitions. Word has length 152 [2022-03-03 17:22:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:22:02,758 INFO L470 AbstractCegarLoop]: Abstraction has 24999 states and 72748 transitions. [2022-03-03 17:22:02,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 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) [2022-03-03 17:22:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 24999 states and 72748 transitions. [2022-03-03 17:22:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:22:02,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:22:02,799 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:22:02,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-03 17:22:03,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-03 17:22:03,005 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:22:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:22:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -738647869, now seen corresponding path program 45 times [2022-03-03 17:22:03,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:22:03,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618737677] [2022-03-03 17:22:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:22:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:22:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:22:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:22:03,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:22:03,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618737677] [2022-03-03 17:22:03,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618737677] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:22:03,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645970482] [2022-03-03 17:22:03,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:22:03,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:22:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:22:03,117 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:22:03,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:22:03,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:22:03,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:22:03,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:22:03,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:22:04,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:22:04,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:22:04,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:22:05,097 INFO L353 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2022-03-03 17:22:05,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-03-03 17:22:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:22:05,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:22:07,669 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:22:07,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 98 [2022-03-03 17:22:07,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:22:07,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 634 treesize of output 740 [2022-03-03 17:22:07,923 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:22:07,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 663 treesize of output 678 [2022-03-03 17:22:08,046 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:22:08,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 583 treesize of output 649 [2022-03-03 17:24:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:24:32,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645970482] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:32,681 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:32,681 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 18] total 41 [2022-03-03 17:24:32,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294816140] [2022-03-03 17:24:32,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:32,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:24:32,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:24:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1397, Unknown=39, NotChecked=0, Total=1640 [2022-03-03 17:24:32,682 INFO L87 Difference]: Start difference. First operand 24999 states and 72748 transitions. Second operand has 41 states, 41 states have (on average 9.463414634146341) internal successors, (388), 41 states have internal predecessors, (388), 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) [2022-03-03 17:24:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:46,636 INFO L93 Difference]: Finished difference Result 45311 states and 129811 transitions. [2022-03-03 17:24:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-03 17:24:46,637 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 9.463414634146341) internal successors, (388), 41 states have internal predecessors, (388), 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) Word has length 152 [2022-03-03 17:24:46,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:46,735 INFO L225 Difference]: With dead ends: 45311 [2022-03-03 17:24:46,735 INFO L226 Difference]: Without dead ends: 45222 [2022-03-03 17:24:46,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6894 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=2564, Invalid=17978, Unknown=50, NotChecked=0, Total=20592 [2022-03-03 17:24:46,739 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1549 mSDsluCounter, 6710 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 6801 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3953 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:46,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 6801 Invalid, 5423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1419 Invalid, 0 Unknown, 3953 Unchecked, 0.8s Time] [2022-03-03 17:24:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45222 states. [2022-03-03 17:24:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45222 to 29180. [2022-03-03 17:24:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29180 states, 29179 states have (on average 2.8993796908735736) internal successors, (84601), 29179 states have internal predecessors, (84601), 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) [2022-03-03 17:24:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29180 states to 29180 states and 84601 transitions. [2022-03-03 17:24:47,423 INFO L78 Accepts]: Start accepts. Automaton has 29180 states and 84601 transitions. Word has length 152 [2022-03-03 17:24:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:47,423 INFO L470 AbstractCegarLoop]: Abstraction has 29180 states and 84601 transitions. [2022-03-03 17:24:47,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.463414634146341) internal successors, (388), 41 states have internal predecessors, (388), 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) [2022-03-03 17:24:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29180 states and 84601 transitions. [2022-03-03 17:24:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:24:47,471 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:47,471 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:24:47,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-03-03 17:24:47,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-03-03 17:24:47,672 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:47,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -99752827, now seen corresponding path program 46 times [2022-03-03 17:24:47,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:47,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683462186] [2022-03-03 17:24:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:47,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:47,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:47,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683462186] [2022-03-03 17:24:47,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683462186] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:47,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388114121] [2022-03-03 17:24:47,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:24:47,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:47,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:47,767 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:47,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:24:47,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:24:47,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:47,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:24:47,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:48,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:48,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388114121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:48,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:48,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-03 17:24:48,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952936584] [2022-03-03 17:24:48,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:48,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:24:48,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:24:48,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:24:48,620 INFO L87 Difference]: Start difference. First operand 29180 states and 84601 transitions. Second operand has 18 states, 18 states have (on average 9.555555555555555) internal successors, (172), 18 states have internal predecessors, (172), 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) [2022-03-03 17:24:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:49,360 INFO L93 Difference]: Finished difference Result 36535 states and 105140 transitions. [2022-03-03 17:24:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:24:49,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.555555555555555) internal successors, (172), 18 states have internal predecessors, (172), 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) Word has length 152 [2022-03-03 17:24:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:49,442 INFO L225 Difference]: With dead ends: 36535 [2022-03-03 17:24:49,442 INFO L226 Difference]: Without dead ends: 36268 [2022-03-03 17:24:49,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:24:49,443 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 378 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:49,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2421 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:24:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36268 states. [2022-03-03 17:24:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36268 to 28814. [2022-03-03 17:24:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28814 states, 28813 states have (on average 2.9032381216811856) internal successors, (83651), 28813 states have internal predecessors, (83651), 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) [2022-03-03 17:24:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28814 states to 28814 states and 83651 transitions. [2022-03-03 17:24:50,068 INFO L78 Accepts]: Start accepts. Automaton has 28814 states and 83651 transitions. Word has length 152 [2022-03-03 17:24:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:50,069 INFO L470 AbstractCegarLoop]: Abstraction has 28814 states and 83651 transitions. [2022-03-03 17:24:50,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.555555555555555) internal successors, (172), 18 states have internal predecessors, (172), 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) [2022-03-03 17:24:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 28814 states and 83651 transitions. [2022-03-03 17:24:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:24:50,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:50,140 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:24:50,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:50,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:50,364 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash -935003199, now seen corresponding path program 47 times [2022-03-03 17:24:50,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:50,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480201565] [2022-03-03 17:24:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:50,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:50,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480201565] [2022-03-03 17:24:50,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480201565] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:50,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791187788] [2022-03-03 17:24:50,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:24:50,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:50,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:50,464 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:50,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:24:50,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:24:50,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:50,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:24:50,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:50,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:51,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791187788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:51,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:51,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-03 17:24:51,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613320116] [2022-03-03 17:24:51,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:51,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:24:51,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:24:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:24:51,120 INFO L87 Difference]: Start difference. First operand 28814 states and 83651 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 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) [2022-03-03 17:24:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:52,232 INFO L93 Difference]: Finished difference Result 37847 states and 108818 transitions. [2022-03-03 17:24:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:24:52,233 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 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) Word has length 152 [2022-03-03 17:24:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:52,319 INFO L225 Difference]: With dead ends: 37847 [2022-03-03 17:24:52,319 INFO L226 Difference]: Without dead ends: 37730 [2022-03-03 17:24:52,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=517, Invalid=2345, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:24:52,320 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 554 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:52,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 2191 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:24:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37730 states. [2022-03-03 17:24:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37730 to 29818. [2022-03-03 17:24:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29818 states, 29817 states have (on average 2.9114934433376933) internal successors, (86812), 29817 states have internal predecessors, (86812), 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) [2022-03-03 17:24:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29818 states to 29818 states and 86812 transitions. [2022-03-03 17:24:52,943 INFO L78 Accepts]: Start accepts. Automaton has 29818 states and 86812 transitions. Word has length 152 [2022-03-03 17:24:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:52,943 INFO L470 AbstractCegarLoop]: Abstraction has 29818 states and 86812 transitions. [2022-03-03 17:24:52,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 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) [2022-03-03 17:24:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 29818 states and 86812 transitions. [2022-03-03 17:24:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:24:52,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:52,991 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:24:53,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:53,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-03 17:24:53,192 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:53,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1261493729, now seen corresponding path program 48 times [2022-03-03 17:24:53,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:53,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532491696] [2022-03-03 17:24:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:53,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:53,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532491696] [2022-03-03 17:24:53,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532491696] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:53,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689826404] [2022-03-03 17:24:53,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:24:53,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:53,279 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:53,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 17:24:53,515 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:24:53,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:53,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:24:53,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:53,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:54,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689826404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:54,157 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:54,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:24:54,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431617103] [2022-03-03 17:24:54,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:54,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:24:54,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:24:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:24:54,159 INFO L87 Difference]: Start difference. First operand 29818 states and 86812 transitions. Second operand has 17 states, 17 states have (on average 9.941176470588236) internal successors, (169), 17 states have internal predecessors, (169), 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) [2022-03-03 17:24:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:55,046 INFO L93 Difference]: Finished difference Result 37608 states and 108185 transitions. [2022-03-03 17:24:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:24:55,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.941176470588236) internal successors, (169), 17 states have internal predecessors, (169), 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) Word has length 152 [2022-03-03 17:24:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:55,123 INFO L225 Difference]: With dead ends: 37608 [2022-03-03 17:24:55,123 INFO L226 Difference]: Without dead ends: 37505 [2022-03-03 17:24:55,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=482, Invalid=1968, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:24:55,124 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 679 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:55,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 1917 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:24:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37505 states. [2022-03-03 17:24:55,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37505 to 29808. [2022-03-03 17:24:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29808 states, 29807 states have (on average 2.9055926460227464) internal successors, (86607), 29807 states have internal predecessors, (86607), 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) [2022-03-03 17:24:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29808 states to 29808 states and 86607 transitions. [2022-03-03 17:24:55,708 INFO L78 Accepts]: Start accepts. Automaton has 29808 states and 86607 transitions. Word has length 152 [2022-03-03 17:24:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:55,708 INFO L470 AbstractCegarLoop]: Abstraction has 29808 states and 86607 transitions. [2022-03-03 17:24:55,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.941176470588236) internal successors, (169), 17 states have internal predecessors, (169), 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) [2022-03-03 17:24:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 29808 states and 86607 transitions. [2022-03-03 17:24:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-03 17:24:55,860 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:55,860 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:24:55,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:56,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:56,061 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 87051379, now seen corresponding path program 49 times [2022-03-03 17:24:56,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:56,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067794042] [2022-03-03 17:24:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:56,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:56,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:56,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067794042] [2022-03-03 17:24:56,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067794042] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:56,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037942971] [2022-03-03 17:24:56,161 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:24:56,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:56,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:56,164 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:56,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 17:24:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:56,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:24:56,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:56,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-03 17:24:56,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037942971] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:56,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:56,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-03 17:24:56,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348959288] [2022-03-03 17:24:56,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:56,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 17:24:56,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 17:24:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:24:56,903 INFO L87 Difference]: Start difference. First operand 29808 states and 86607 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) [2022-03-03 17:24:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:57,943 INFO L93 Difference]: Finished difference Result 37513 states and 107666 transitions. [2022-03-03 17:24:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:24:57,943 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) Word has length 152 [2022-03-03 17:24:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:58,020 INFO L225 Difference]: With dead ends: 37513 [2022-03-03 17:24:58,020 INFO L226 Difference]: Without dead ends: 37465 [2022-03-03 17:24:58,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=560, Invalid=1890, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:24:58,021 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 480 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:58,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 2634 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:24:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37465 states. [2022-03-03 17:24:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37465 to 29550. [2022-03-03 17:24:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29550 states, 29549 states have (on average 2.8986090899861248) internal successors, (85651), 29549 states have internal predecessors, (85651), 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) [2022-03-03 17:24:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29550 states to 29550 states and 85651 transitions. [2022-03-03 17:24:58,738 INFO L78 Accepts]: Start accepts. Automaton has 29550 states and 85651 transitions. Word has length 152 [2022-03-03 17:24:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:58,738 INFO L470 AbstractCegarLoop]: Abstraction has 29550 states and 85651 transitions. [2022-03-03 17:24:58,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 17 states have internal predecessors, (165), 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) [2022-03-03 17:24:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29550 states and 85651 transitions. [2022-03-03 17:24:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-03 17:24:58,785 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:58,785 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:24:58,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-03 17:24:58,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:58,986 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:58,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1071089278, now seen corresponding path program 50 times [2022-03-03 17:24:58,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:58,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600004927] [2022-03-03 17:24:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:01,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:01,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600004927] [2022-03-03 17:25:01,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600004927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:01,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034735010] [2022-03-03 17:25:01,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:25:01,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:01,061 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:01,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 17:25:01,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:25:01,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:25:01,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-03 17:25:01,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:01,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:02,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:25:02,724 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:25:02,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:25:02,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:02,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:03,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:03,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:03,403 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:03,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-03-03 17:25:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:25:03,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:11,029 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:11,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 130 [2022-03-03 17:25:11,151 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:11,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 13920 treesize of output 12764 [2022-03-03 17:25:11,333 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:11,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 13597 treesize of output 11544 [2022-03-03 17:25:11,550 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:11,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 11179 treesize of output 8214 [2022-03-03 17:25:11,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:11,797 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 8053 treesize of output 7720 Received shutdown request... [2022-03-03 17:32:51,570 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-03 17:32:51,572 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:32:51,581 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:32:51,581 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 [2022-03-03 17:32:51,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 17:32:51,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:32:51,782 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 155 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 39ms.. [2022-03-03 17:32:51,783 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:32:51,783 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:32:51,785 INFO L732 BasicCegarLoop]: Path program histogram: [50, 7, 4, 1, 1, 1, 1, 1] [2022-03-03 17:32:51,786 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:32:51,786 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:32:51,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:32:51 BasicIcfg [2022-03-03 17:32:51,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:32:51,788 INFO L158 Benchmark]: Toolchain (without parser) took 803334.30ms. Allocated memory was 179.3MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 156.5MB in the beginning and 560.2MB in the end (delta: -403.7MB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.84ms. Allocated memory was 179.3MB in the beginning and 223.3MB in the end (delta: 44.0MB). Free memory was 156.3MB in the beginning and 199.1MB in the end (delta: -42.8MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.13ms. Allocated memory is still 223.3MB. Free memory was 199.1MB in the beginning and 196.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L158 Benchmark]: Boogie Preprocessor took 28.42ms. Allocated memory is still 223.3MB. Free memory was 196.7MB in the beginning and 195.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L158 Benchmark]: RCFGBuilder took 726.59ms. Allocated memory is still 223.3MB. Free memory was 195.2MB in the beginning and 166.6MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L158 Benchmark]: TraceAbstraction took 802291.46ms. Allocated memory was 223.3MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 165.9MB in the beginning and 560.2MB in the end (delta: -394.3MB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-03-03 17:32:51,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.84ms. Allocated memory was 179.3MB in the beginning and 223.3MB in the end (delta: 44.0MB). Free memory was 156.3MB in the beginning and 199.1MB in the end (delta: -42.8MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.13ms. Allocated memory is still 223.3MB. Free memory was 199.1MB in the beginning and 196.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.42ms. Allocated memory is still 223.3MB. Free memory was 196.7MB in the beginning and 195.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 726.59ms. Allocated memory is still 223.3MB. Free memory was 195.2MB in the beginning and 166.6MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 802291.46ms. Allocated memory was 223.3MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 165.9MB in the beginning and 560.2MB in the end (delta: -394.3MB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 155 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 39ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 155 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 39ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 155 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 39ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 173 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 802.1s, OverallIterations: 66, TraceHistogramMax: 2, PathProgramHistogramMax: 50, EmptinessCheckTime: 1.5s, AutomataDifference: 95.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31430 SdHoareTripleChecker+Valid, 21.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31430 mSDsluCounter, 123814 SdHoareTripleChecker+Invalid, 18.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4408 IncrementalHoareTripleChecker+Unchecked, 119444 mSDsCounter, 2418 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36473 IncrementalHoareTripleChecker+Invalid, 43299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2418 mSolverCounterUnsat, 13269 mSDtfsCounter, 36473 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20353 GetRequests, 17317 SyntacticMatches, 56 SemanticMatches, 2980 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61763 ImplicationChecksByTransitivity, 73.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29818occurred in iteration=63, InterpolantAutomatonStates: 2488, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.9s AutomataMinimizationTime, 65 MinimizatonAttempts, 301833 StatesRemovedByMinimization, 64 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 191.0s InterpolantComputationTime, 17416 NumberOfCodeBlocks, 17243 NumberOfCodeBlocksAsserted, 185 NumberOfCheckSat, 25161 ConstructedInterpolants, 84 QuantifiedInterpolants, 49512 SizeOfPredicates, 470 NumberOfNonLiveVariables, 18375 ConjunctsInSsa, 503 ConjunctsInUnsatCore, 172 InterpolantComputations, 12 PerfectInterpolantSequences, 2122/2597 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