/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-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:43:31,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:43:31,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:43:31,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:43:31,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:43:31,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:43:31,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:43:31,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:43:31,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:43:31,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:43:31,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:43:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:43:31,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:43:31,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:43:31,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:43:31,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:43:31,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:43:31,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:43:31,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:43:31,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:43:31,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:43:31,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:43:31,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:43:31,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:43:31,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 22:43:31,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 22:43:31,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 22:43:31,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 22:43:31,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 22:43:31,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 22:43:31,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 22:43:31,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 22:43:31,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 22:43:31,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 22:43:31,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 22:43:31,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 22:43:31,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 22:43:31,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 22:43:31,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:43:31,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:43:31,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:43:31,899 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 [2022-02-10 22:43:31,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:43:31,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:43:31,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:43:31,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:43:31,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:43:31,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:43:31,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:43:31,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:43:31,935 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:43:31,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:43:31,936 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:43:31,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:43:31,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:43:31,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:43:31,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:43:31,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:43:31,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:43:31,938 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:43:31,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:43:31,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:43:32,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:43:32,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:43:32,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:43:32,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:43:32,190 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:43:32,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-02-10 22:43:32,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad6b2d8d4/9014d7d6b4884f059fd608e34d2d3960/FLAGaa62469b7 [2022-02-10 22:43:32,650 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:43:32,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-02-10 22:43:32,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad6b2d8d4/9014d7d6b4884f059fd608e34d2d3960/FLAGaa62469b7 [2022-02-10 22:43:32,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad6b2d8d4/9014d7d6b4884f059fd608e34d2d3960 [2022-02-10 22:43:32,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:43:32,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:43:32,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:43:32,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:43:32,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:43:32,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32, skipping insertion in model container [2022-02-10 22:43:32,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:43:32,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:43:32,868 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-figure3.wvr.c[2121,2134] [2022-02-10 22:43:32,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:43:32,877 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:43:32,892 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-figure3.wvr.c[2121,2134] [2022-02-10 22:43:32,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:43:32,904 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:43:32,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32 WrapperNode [2022-02-10 22:43:32,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:43:32,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:43:32,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:43:32,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:43:32,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,943 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-02-10 22:43:32,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:43:32,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:43:32,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:43:32,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:43:32,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:43:32,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:43:32,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:43:32,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:43:32,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (1/1) ... [2022-02-10 22:43:32,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:43:32,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:33,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-10 22:43:33,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:43:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:43:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:43:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:43:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:43:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:43:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:43:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:43:33,040 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:43:33,097 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:43:33,098 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:43:33,344 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:43:33,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:43:33,400 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 22:43:33,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:43:33 BoogieIcfgContainer [2022-02-10 22:43:33,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:43:33,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:43:33,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:43:33,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:43:33,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:43:32" (1/3) ... [2022-02-10 22:43:33,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6499179e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:43:33, skipping insertion in model container [2022-02-10 22:43:33,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:43:32" (2/3) ... [2022-02-10 22:43:33,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6499179e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:43:33, skipping insertion in model container [2022-02-10 22:43:33,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:43:33" (3/3) ... [2022-02-10 22:43:33,408 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-02-10 22:43:33,412 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:43:33,412 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:43:33,413 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:43:33,413 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:43:33,466 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,466 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,466 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,468 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,469 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,469 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,472 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,472 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,472 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,472 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,473 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,473 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,473 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,474 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,474 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,474 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,475 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,475 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,476 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,476 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,476 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,477 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,477 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,479 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,481 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,482 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,482 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,482 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,483 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,483 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,483 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,483 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,483 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,484 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,484 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,484 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,484 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,484 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,484 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,485 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,485 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,485 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,485 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,485 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,488 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,488 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,488 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,488 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,489 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,489 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,489 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,489 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,489 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,490 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:43:33,494 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 22:43:33,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:43:33,543 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, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 22:43:33,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 22:43:33,558 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-02-10 22:43:33,615 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 22:43:33,638 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:33,638 INFO L515 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] [2022-02-10 22:43:33,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1942784834, now seen corresponding path program 1 times [2022-02-10 22:43:33,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:33,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481511823] [2022-02-10 22:43:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:33,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:33,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481511823] [2022-02-10 22:43:33,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481511823] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:33,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:33,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:43:33,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421007328] [2022-02-10 22:43:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:33,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:43:33,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:43:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:43:33,873 INFO L87 Difference]: Start difference. First operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:33,918 INFO L93 Difference]: Finished difference Result 447 states and 1095 transitions. [2022-02-10 22:43:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:43:33,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-02-10 22:43:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:33,941 INFO L225 Difference]: With dead ends: 447 [2022-02-10 22:43:33,945 INFO L226 Difference]: Without dead ends: 445 [2022-02-10 22:43:33,947 INFO L933 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 [2022-02-10 22:43:33,950 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:33,952 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-02-10 22:43:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2022-02-10 22:43:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.4617117117117115) internal successors, (1093), 444 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1093 transitions. [2022-02-10 22:43:34,024 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1093 transitions. Word has length 60 [2022-02-10 22:43:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:34,024 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1093 transitions. [2022-02-10 22:43:34,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1093 transitions. [2022-02-10 22:43:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-10 22:43:34,028 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:34,028 INFO L515 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] [2022-02-10 22:43:34,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:43:34,029 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1057361610, now seen corresponding path program 1 times [2022-02-10 22:43:34,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:34,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478224829] [2022-02-10 22:43:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:34,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:34,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478224829] [2022-02-10 22:43:34,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478224829] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:34,199 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:34,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:43:34,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863111485] [2022-02-10 22:43:34,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:34,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:43:34,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:43:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:43:34,201 INFO L87 Difference]: Start difference. First operand 445 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:34,278 INFO L93 Difference]: Finished difference Result 607 states and 1465 transitions. [2022-02-10 22:43:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:43:34,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-02-10 22:43:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:34,282 INFO L225 Difference]: With dead ends: 607 [2022-02-10 22:43:34,282 INFO L226 Difference]: Without dead ends: 493 [2022-02-10 22:43:34,285 INFO L933 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 [2022-02-10 22:43:34,286 INFO L934 BasicCegarLoop]: 62 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:34,286 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 220 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-02-10 22:43:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 481. [2022-02-10 22:43:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 2.4479166666666665) internal successors, (1175), 480 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1175 transitions. [2022-02-10 22:43:34,306 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1175 transitions. Word has length 60 [2022-02-10 22:43:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:34,311 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1175 transitions. [2022-02-10 22:43:34,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1175 transitions. [2022-02-10 22:43:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:34,314 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:34,314 INFO L515 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] [2022-02-10 22:43:34,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:43:34,315 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:34,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1205009006, now seen corresponding path program 1 times [2022-02-10 22:43:34,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:34,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943585266] [2022-02-10 22:43:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:34,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:34,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943585266] [2022-02-10 22:43:34,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943585266] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:34,468 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:34,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:43:34,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741273509] [2022-02-10 22:43:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:34,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:43:34,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:43:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:43:34,470 INFO L87 Difference]: Start difference. First operand 481 states and 1175 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:34,564 INFO L93 Difference]: Finished difference Result 673 states and 1670 transitions. [2022-02-10 22:43:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:43:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:34,570 INFO L225 Difference]: With dead ends: 673 [2022-02-10 22:43:34,570 INFO L226 Difference]: Without dead ends: 661 [2022-02-10 22:43:34,571 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:43:34,571 INFO L934 BasicCegarLoop]: 83 mSDtfsCounter, 38 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:34,572 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:43:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-02-10 22:43:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 485. [2022-02-10 22:43:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 2.450413223140496) internal successors, (1186), 484 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1186 transitions. [2022-02-10 22:43:34,587 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1186 transitions. Word has length 65 [2022-02-10 22:43:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:34,587 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1186 transitions. [2022-02-10 22:43:34,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1186 transitions. [2022-02-10 22:43:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:34,589 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:34,589 INFO L515 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] [2022-02-10 22:43:34,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 22:43:34,589 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1184291620, now seen corresponding path program 2 times [2022-02-10 22:43:34,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:34,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401996046] [2022-02-10 22:43:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:34,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:34,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401996046] [2022-02-10 22:43:34,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401996046] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:34,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:34,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:43:34,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933295054] [2022-02-10 22:43:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:34,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:43:34,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:43:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:43:34,707 INFO L87 Difference]: Start difference. First operand 485 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:34,758 INFO L93 Difference]: Finished difference Result 673 states and 1682 transitions. [2022-02-10 22:43:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:43:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:34,762 INFO L225 Difference]: With dead ends: 673 [2022-02-10 22:43:34,763 INFO L226 Difference]: Without dead ends: 673 [2022-02-10 22:43:34,763 INFO L933 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 [2022-02-10 22:43:34,768 INFO L934 BasicCegarLoop]: 84 mSDtfsCounter, 36 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:34,769 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 215 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-02-10 22:43:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 497. [2022-02-10 22:43:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 2.4576612903225805) internal successors, (1219), 496 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1219 transitions. [2022-02-10 22:43:34,781 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1219 transitions. Word has length 65 [2022-02-10 22:43:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:34,781 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1219 transitions. [2022-02-10 22:43:34,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1219 transitions. [2022-02-10 22:43:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:34,782 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:34,783 INFO L515 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] [2022-02-10 22:43:34,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 22:43:34,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1828792382, now seen corresponding path program 3 times [2022-02-10 22:43:34,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:34,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794914116] [2022-02-10 22:43:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:34,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:34,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794914116] [2022-02-10 22:43:34,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794914116] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:34,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:34,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:43:34,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251179545] [2022-02-10 22:43:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:43:34,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:43:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:43:34,885 INFO L87 Difference]: Start difference. First operand 497 states and 1219 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:34,940 INFO L93 Difference]: Finished difference Result 813 states and 2058 transitions. [2022-02-10 22:43:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:43:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:34,944 INFO L225 Difference]: With dead ends: 813 [2022-02-10 22:43:34,944 INFO L226 Difference]: Without dead ends: 813 [2022-02-10 22:43:34,945 INFO L933 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 [2022-02-10 22:43:34,945 INFO L934 BasicCegarLoop]: 89 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:34,945 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 241 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-02-10 22:43:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 524. [2022-02-10 22:43:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-02-10 22:43:34,961 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-02-10 22:43:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:34,962 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-02-10 22:43:34,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-02-10 22:43:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:34,964 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:34,964 INFO L515 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] [2022-02-10 22:43:34,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 22:43:34,964 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash 780130990, now seen corresponding path program 4 times [2022-02-10 22:43:34,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:34,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779202638] [2022-02-10 22:43:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:35,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:35,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779202638] [2022-02-10 22:43:35,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779202638] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:35,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:35,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:43:35,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402015342] [2022-02-10 22:43:35,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:35,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:43:35,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:35,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:43:35,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:43:35,091 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:35,128 INFO L93 Difference]: Finished difference Result 672 states and 1677 transitions. [2022-02-10 22:43:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:43:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:35,132 INFO L225 Difference]: With dead ends: 672 [2022-02-10 22:43:35,132 INFO L226 Difference]: Without dead ends: 672 [2022-02-10 22:43:35,132 INFO L933 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 [2022-02-10 22:43:35,133 INFO L934 BasicCegarLoop]: 93 mSDtfsCounter, 41 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:35,133 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 176 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-02-10 22:43:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 556. [2022-02-10 22:43:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.4684684684684686) internal successors, (1370), 555 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1370 transitions. [2022-02-10 22:43:35,151 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1370 transitions. Word has length 65 [2022-02-10 22:43:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:35,151 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1370 transitions. [2022-02-10 22:43:35,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1370 transitions. [2022-02-10 22:43:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:35,153 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:35,153 INFO L515 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] [2022-02-10 22:43:35,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 22:43:35,153 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:35,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:35,154 INFO L85 PathProgramCache]: Analyzing trace with hash 135630228, now seen corresponding path program 5 times [2022-02-10 22:43:35,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:35,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386225048] [2022-02-10 22:43:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:35,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:35,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:35,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386225048] [2022-02-10 22:43:35,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386225048] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:35,242 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:35,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:43:35,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866813600] [2022-02-10 22:43:35,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:35,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:43:35,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:43:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:43:35,244 INFO L87 Difference]: Start difference. First operand 556 states and 1370 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:35,331 INFO L93 Difference]: Finished difference Result 812 states and 2053 transitions. [2022-02-10 22:43:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:43:35,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:35,336 INFO L225 Difference]: With dead ends: 812 [2022-02-10 22:43:35,336 INFO L226 Difference]: Without dead ends: 812 [2022-02-10 22:43:35,337 INFO L933 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 [2022-02-10 22:43:35,337 INFO L934 BasicCegarLoop]: 98 mSDtfsCounter, 56 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:35,338 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 336 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:43:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-02-10 22:43:35,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 544. [2022-02-10 22:43:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.4622467771639043) internal successors, (1337), 543 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1337 transitions. [2022-02-10 22:43:35,354 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1337 transitions. Word has length 65 [2022-02-10 22:43:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:35,354 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1337 transitions. [2022-02-10 22:43:35,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1337 transitions. [2022-02-10 22:43:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:35,356 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:35,356 INFO L515 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] [2022-02-10 22:43:35,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 22:43:35,357 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1678651950, now seen corresponding path program 6 times [2022-02-10 22:43:35,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:35,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581595599] [2022-02-10 22:43:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:35,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:35,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581595599] [2022-02-10 22:43:35,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581595599] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:35,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:35,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:43:35,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424874048] [2022-02-10 22:43:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:35,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:43:35,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:43:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:43:35,435 INFO L87 Difference]: Start difference. First operand 544 states and 1337 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:35,560 INFO L93 Difference]: Finished difference Result 843 states and 2140 transitions. [2022-02-10 22:43:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 22:43:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:35,565 INFO L225 Difference]: With dead ends: 843 [2022-02-10 22:43:35,565 INFO L226 Difference]: Without dead ends: 843 [2022-02-10 22:43:35,565 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:43:35,566 INFO L934 BasicCegarLoop]: 98 mSDtfsCounter, 88 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:35,567 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 345 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:43:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-02-10 22:43:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 524. [2022-02-10 22:43:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-02-10 22:43:35,584 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-02-10 22:43:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:35,585 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-02-10 22:43:35,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-02-10 22:43:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:35,590 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:35,590 INFO L515 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] [2022-02-10 22:43:35,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 22:43:35,590 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:35,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1844803496, now seen corresponding path program 7 times [2022-02-10 22:43:35,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:35,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961045137] [2022-02-10 22:43:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:35,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:35,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961045137] [2022-02-10 22:43:35,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961045137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:35,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:35,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:43:35,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901204215] [2022-02-10 22:43:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:35,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:43:35,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:43:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:43:35,696 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:35,750 INFO L93 Difference]: Finished difference Result 790 states and 1951 transitions. [2022-02-10 22:43:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:43:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:35,754 INFO L225 Difference]: With dead ends: 790 [2022-02-10 22:43:35,755 INFO L226 Difference]: Without dead ends: 754 [2022-02-10 22:43:35,755 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:43:35,757 INFO L934 BasicCegarLoop]: 93 mSDtfsCounter, 63 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:35,757 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 242 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-02-10 22:43:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 580. [2022-02-10 22:43:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.5025906735751295) internal successors, (1449), 579 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1449 transitions. [2022-02-10 22:43:35,776 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1449 transitions. Word has length 65 [2022-02-10 22:43:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:35,776 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1449 transitions. [2022-02-10 22:43:35,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1449 transitions. [2022-02-10 22:43:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:35,778 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:35,778 INFO L515 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] [2022-02-10 22:43:35,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 22:43:35,778 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:35,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1977551010, now seen corresponding path program 8 times [2022-02-10 22:43:35,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:35,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032314947] [2022-02-10 22:43:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:35,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:35,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032314947] [2022-02-10 22:43:35,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032314947] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:35,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:35,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:43:35,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173965242] [2022-02-10 22:43:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:35,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:43:35,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:43:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:43:35,853 INFO L87 Difference]: Start difference. First operand 580 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:35,899 INFO L93 Difference]: Finished difference Result 798 states and 1985 transitions. [2022-02-10 22:43:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:43:35,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:35,903 INFO L225 Difference]: With dead ends: 798 [2022-02-10 22:43:35,903 INFO L226 Difference]: Without dead ends: 798 [2022-02-10 22:43:35,903 INFO L933 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 [2022-02-10 22:43:35,903 INFO L934 BasicCegarLoop]: 85 mSDtfsCounter, 43 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:35,903 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-02-10 22:43:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 588. [2022-02-10 22:43:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 2.4991482112436114) internal successors, (1467), 587 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1467 transitions. [2022-02-10 22:43:35,916 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1467 transitions. Word has length 65 [2022-02-10 22:43:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:35,916 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1467 transitions. [2022-02-10 22:43:35,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1467 transitions. [2022-02-10 22:43:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-10 22:43:35,918 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:35,918 INFO L515 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] [2022-02-10 22:43:35,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 22:43:35,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1672915524, now seen corresponding path program 9 times [2022-02-10 22:43:35,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:35,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227721159] [2022-02-10 22:43:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:35,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:35,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227721159] [2022-02-10 22:43:35,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227721159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:35,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:43:35,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:43:35,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209915327] [2022-02-10 22:43:35,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:35,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:43:35,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:43:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:43:35,999 INFO L87 Difference]: Start difference. First operand 588 states and 1467 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:36,055 INFO L93 Difference]: Finished difference Result 719 states and 1804 transitions. [2022-02-10 22:43:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:43:36,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-02-10 22:43:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:36,058 INFO L225 Difference]: With dead ends: 719 [2022-02-10 22:43:36,058 INFO L226 Difference]: Without dead ends: 719 [2022-02-10 22:43:36,058 INFO L933 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 [2022-02-10 22:43:36,059 INFO L934 BasicCegarLoop]: 89 mSDtfsCounter, 41 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:36,059 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 290 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:36,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-02-10 22:43:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 492. [2022-02-10 22:43:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.441955193482688) internal successors, (1199), 491 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1199 transitions. [2022-02-10 22:43:36,070 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1199 transitions. Word has length 65 [2022-02-10 22:43:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:36,070 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1199 transitions. [2022-02-10 22:43:36,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1199 transitions. [2022-02-10 22:43:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:43:36,071 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:36,071 INFO L515 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] [2022-02-10 22:43:36,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 22:43:36,072 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1959986980, now seen corresponding path program 1 times [2022-02-10 22:43:36,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:36,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622085920] [2022-02-10 22:43:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:36,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:36,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622085920] [2022-02-10 22:43:36,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622085920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:36,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153321173] [2022-02-10 22:43:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:36,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:36,188 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) [2022-02-10 22:43:36,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:43:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:36,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:43:36,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:43:36,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:43:36,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153321173] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:43:36,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:43:36,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2022-02-10 22:43:36,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979588204] [2022-02-10 22:43:36,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:43:36,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:43:36,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:43:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:43:36,462 INFO L87 Difference]: Start difference. First operand 492 states and 1199 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:36,514 INFO L93 Difference]: Finished difference Result 1185 states and 2967 transitions. [2022-02-10 22:43:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 22:43:36,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-02-10 22:43:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:36,518 INFO L225 Difference]: With dead ends: 1185 [2022-02-10 22:43:36,518 INFO L226 Difference]: Without dead ends: 996 [2022-02-10 22:43:36,518 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:43:36,518 INFO L934 BasicCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:36,519 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:43:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-02-10 22:43:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 862. [2022-02-10 22:43:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.5516840882694543) internal successors, (2197), 861 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2197 transitions. [2022-02-10 22:43:36,536 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2197 transitions. Word has length 70 [2022-02-10 22:43:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:36,536 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2197 transitions. [2022-02-10 22:43:36,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2197 transitions. [2022-02-10 22:43:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:43:36,540 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:36,540 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:43:36,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 22:43:36,755 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,SelfDestructingSolverStorable11 [2022-02-10 22:43:36,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash 864971766, now seen corresponding path program 2 times [2022-02-10 22:43:36,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:36,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168363483] [2022-02-10 22:43:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:36,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:36,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168363483] [2022-02-10 22:43:36,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168363483] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:36,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362767427] [2022-02-10 22:43:36,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:43:36,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:36,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:36,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:43:36,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:43:37,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:43:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:43:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:43:37,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:37,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:37,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362767427] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:37,499 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:37,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:43:37,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088040685] [2022-02-10 22:43:37,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:43:37,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:43:37,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:43:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:43:37,501 INFO L87 Difference]: Start difference. First operand 862 states and 2197 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:40,449 INFO L93 Difference]: Finished difference Result 3702 states and 9759 transitions. [2022-02-10 22:43:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 22:43:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 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 75 [2022-02-10 22:43:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:40,465 INFO L225 Difference]: With dead ends: 3702 [2022-02-10 22:43:40,465 INFO L226 Difference]: Without dead ends: 3654 [2022-02-10 22:43:40,466 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=993, Invalid=5169, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 22:43:40,467 INFO L934 BasicCegarLoop]: 157 mSDtfsCounter, 649 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:40,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1510 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:43:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-02-10 22:43:40,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 1578. [2022-02-10 22:43:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1577 states have (on average 2.7228915662650603) internal successors, (4294), 1577 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 4294 transitions. [2022-02-10 22:43:40,542 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 4294 transitions. Word has length 75 [2022-02-10 22:43:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:40,543 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 4294 transitions. [2022-02-10 22:43:40,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 4294 transitions. [2022-02-10 22:43:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:43:40,547 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:40,548 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:43:40,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:43:40,763 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,SelfDestructingSolverStorable12 [2022-02-10 22:43:40,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:40,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash 885689152, now seen corresponding path program 3 times [2022-02-10 22:43:40,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:40,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936907801] [2022-02-10 22:43:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:40,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:40,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936907801] [2022-02-10 22:43:40,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936907801] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:40,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15598864] [2022-02-10 22:43:40,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:43:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:40,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:40,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:43:40,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:43:40,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:43:40,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:43:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:43:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:41,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:41,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15598864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:41,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:41,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 22:43:41,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248907328] [2022-02-10 22:43:41,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:43:41,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:43:41,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:43:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:43:41,481 INFO L87 Difference]: Start difference. First operand 1578 states and 4294 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:46,099 INFO L93 Difference]: Finished difference Result 4718 states and 12452 transitions. [2022-02-10 22:43:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 22:43:46,100 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 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 75 [2022-02-10 22:43:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:46,123 INFO L225 Difference]: With dead ends: 4718 [2022-02-10 22:43:46,123 INFO L226 Difference]: Without dead ends: 4658 [2022-02-10 22:43:46,126 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1817, Invalid=8083, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 22:43:46,126 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 878 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:46,127 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 1921 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 22:43:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2022-02-10 22:43:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 1633. [2022-02-10 22:43:46,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1632 states have (on average 2.7150735294117645) internal successors, (4431), 1632 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 4431 transitions. [2022-02-10 22:43:46,194 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 4431 transitions. Word has length 75 [2022-02-10 22:43:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:46,194 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 4431 transitions. [2022-02-10 22:43:46,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 4431 transitions. [2022-02-10 22:43:46,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:43:46,199 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:46,199 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:43:46,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:43:46,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:46,415 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash 487460194, now seen corresponding path program 4 times [2022-02-10 22:43:46,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:46,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729226220] [2022-02-10 22:43:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:46,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:46,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729226220] [2022-02-10 22:43:46,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729226220] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:46,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92901692] [2022-02-10 22:43:46,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:43:46,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:46,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:43:46,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:43:46,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:43:46,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:43:46,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:43:46,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:46,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:47,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92901692] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:47,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:47,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:43:47,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425567446] [2022-02-10 22:43:47,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:43:47,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:43:47,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:43:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:43:47,099 INFO L87 Difference]: Start difference. First operand 1633 states and 4431 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:52,051 INFO L93 Difference]: Finished difference Result 5290 states and 14311 transitions. [2022-02-10 22:43:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-02-10 22:43:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 75 [2022-02-10 22:43:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:52,071 INFO L225 Difference]: With dead ends: 5290 [2022-02-10 22:43:52,071 INFO L226 Difference]: Without dead ends: 5125 [2022-02-10 22:43:52,076 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2438, Invalid=13818, Unknown=0, NotChecked=0, Total=16256 [2022-02-10 22:43:52,077 INFO L934 BasicCegarLoop]: 156 mSDtfsCounter, 866 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:52,077 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1834 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 22:43:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-02-10 22:43:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 2188. [2022-02-10 22:43:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.763145861911294) internal successors, (6043), 2187 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6043 transitions. [2022-02-10 22:43:52,150 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6043 transitions. Word has length 75 [2022-02-10 22:43:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:52,150 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6043 transitions. [2022-02-10 22:43:52,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6043 transitions. [2022-02-10 22:43:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:43:52,154 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:52,155 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:43:52,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:43:52,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-10 22:43:52,361 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1037023166, now seen corresponding path program 5 times [2022-02-10 22:43:52,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:52,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162125487] [2022-02-10 22:43:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:52,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:52,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162125487] [2022-02-10 22:43:52,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162125487] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:52,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680449845] [2022-02-10 22:43:52,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:43:52,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:52,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:52,505 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) [2022-02-10 22:43:52,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:43:52,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:43:52,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:43:52,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:43:52,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:52,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:52,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680449845] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:52,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:52,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:43:52,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032959331] [2022-02-10 22:43:52,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:43:52,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:43:52,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:43:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:43:52,995 INFO L87 Difference]: Start difference. First operand 2188 states and 6043 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:55,813 INFO L93 Difference]: Finished difference Result 6064 states and 16644 transitions. [2022-02-10 22:43:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-10 22:43:55,814 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 75 [2022-02-10 22:43:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:55,827 INFO L225 Difference]: With dead ends: 6064 [2022-02-10 22:43:55,827 INFO L226 Difference]: Without dead ends: 5884 [2022-02-10 22:43:55,829 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1258, Invalid=6052, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 22:43:55,829 INFO L934 BasicCegarLoop]: 154 mSDtfsCounter, 524 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:55,829 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1817 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:43:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-02-10 22:43:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 2812. [2022-02-10 22:43:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 2.7812166488794023) internal successors, (7818), 2811 states have internal predecessors, (7818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 7818 transitions. [2022-02-10 22:43:55,929 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 7818 transitions. Word has length 75 [2022-02-10 22:43:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:55,929 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 7818 transitions. [2022-02-10 22:43:55,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 7818 transitions. [2022-02-10 22:43:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:43:55,934 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:55,935 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:43:55,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-10 22:43:56,147 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,SelfDestructingSolverStorable15 [2022-02-10 22:43:56,148 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 994302006, now seen corresponding path program 6 times [2022-02-10 22:43:56,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:56,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940980054] [2022-02-10 22:43:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:56,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:56,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940980054] [2022-02-10 22:43:56,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940980054] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:56,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535662762] [2022-02-10 22:43:56,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:43:56,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:56,266 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) [2022-02-10 22:43:56,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:43:56,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:43:56,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:43:56,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:43:56,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:56,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:56,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535662762] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:56,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:56,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:43:56,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235545563] [2022-02-10 22:43:56,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:43:56,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:43:56,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:43:56,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:43:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:43:56,730 INFO L87 Difference]: Start difference. First operand 2812 states and 7818 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:43:58,976 INFO L93 Difference]: Finished difference Result 6577 states and 18166 transitions. [2022-02-10 22:43:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 22:43:58,977 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:43:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:43:58,998 INFO L225 Difference]: With dead ends: 6577 [2022-02-10 22:43:58,999 INFO L226 Difference]: Without dead ends: 6529 [2022-02-10 22:43:59,000 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1048, Invalid=5758, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 22:43:59,001 INFO L934 BasicCegarLoop]: 144 mSDtfsCounter, 478 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:43:59,001 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1536 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:43:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2022-02-10 22:43:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 4004. [2022-02-10 22:43:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4003 states have (on average 2.8258805895578316) internal successors, (11312), 4003 states have internal predecessors, (11312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11312 transitions. [2022-02-10 22:43:59,129 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11312 transitions. Word has length 75 [2022-02-10 22:43:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:43:59,129 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 11312 transitions. [2022-02-10 22:43:59,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:43:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11312 transitions. [2022-02-10 22:43:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:43:59,147 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:43:59,148 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:43:59,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:43:59,351 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 [2022-02-10 22:43:59,352 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:43:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:43:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1015019392, now seen corresponding path program 7 times [2022-02-10 22:43:59,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:43:59,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641216801] [2022-02-10 22:43:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:43:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:43:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:59,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:43:59,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641216801] [2022-02-10 22:43:59,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641216801] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:43:59,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279948500] [2022-02-10 22:43:59,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:43:59,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:43:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:43:59,500 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) [2022-02-10 22:43:59,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:43:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:43:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:43:59,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:43:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:59,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:43:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:43:59,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279948500] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:43:59,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:43:59,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:43:59,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145713799] [2022-02-10 22:43:59,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:00,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:00,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:00,001 INFO L87 Difference]: Start difference. First operand 4004 states and 11312 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:03,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:03,593 INFO L93 Difference]: Finished difference Result 7727 states and 21227 transitions. [2022-02-10 22:44:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-10 22:44:03,594 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:03,611 INFO L225 Difference]: With dead ends: 7727 [2022-02-10 22:44:03,611 INFO L226 Difference]: Without dead ends: 7667 [2022-02-10 22:44:03,614 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4567 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2049, Invalid=10161, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 22:44:03,615 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 812 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:03,615 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1704 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:44:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2022-02-10 22:44:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 4036. [2022-02-10 22:44:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4035 states have (on average 2.825278810408922) internal successors, (11400), 4035 states have internal predecessors, (11400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 11400 transitions. [2022-02-10 22:44:03,735 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 11400 transitions. Word has length 75 [2022-02-10 22:44:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:03,735 INFO L470 AbstractCegarLoop]: Abstraction has 4036 states and 11400 transitions. [2022-02-10 22:44:03,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 11400 transitions. [2022-02-10 22:44:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:03,742 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:03,743 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:03,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:03,955 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 [2022-02-10 22:44:03,957 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash 616790434, now seen corresponding path program 8 times [2022-02-10 22:44:03,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:03,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021448761] [2022-02-10 22:44:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:04,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:04,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021448761] [2022-02-10 22:44:04,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021448761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:04,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903693569] [2022-02-10 22:44:04,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:44:04,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:04,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:04,076 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) [2022-02-10 22:44:04,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 22:44:04,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:44:04,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:04,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:04,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:04,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:04,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903693569] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:04,465 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:04,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:04,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907300463] [2022-02-10 22:44:04,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:04,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:04,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:04,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:04,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:04,466 INFO L87 Difference]: Start difference. First operand 4036 states and 11400 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:06,920 INFO L93 Difference]: Finished difference Result 7437 states and 20688 transitions. [2022-02-10 22:44:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-10 22:44:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:06,937 INFO L225 Difference]: With dead ends: 7437 [2022-02-10 22:44:06,937 INFO L226 Difference]: Without dead ends: 7332 [2022-02-10 22:44:06,939 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4055 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1699, Invalid=9431, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 22:44:06,939 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 628 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:06,939 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1387 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:44:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2022-02-10 22:44:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 4376. [2022-02-10 22:44:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 2.824) internal successors, (12355), 4375 states have internal predecessors, (12355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 12355 transitions. [2022-02-10 22:44:07,047 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 12355 transitions. Word has length 75 [2022-02-10 22:44:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:07,047 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 12355 transitions. [2022-02-10 22:44:07,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 12355 transitions. [2022-02-10 22:44:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:07,055 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:07,055 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:07,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:07,269 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 [2022-02-10 22:44:07,269 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash -790464616, now seen corresponding path program 9 times [2022-02-10 22:44:07,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:07,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564595969] [2022-02-10 22:44:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:07,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:07,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564595969] [2022-02-10 22:44:07,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564595969] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:07,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333631989] [2022-02-10 22:44:07,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:44:07,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:07,409 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) [2022-02-10 22:44:07,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 22:44:07,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:44:07,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:07,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:07,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:07,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:07,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333631989] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:07,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:07,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:07,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769976714] [2022-02-10 22:44:07,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:07,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:07,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:07,786 INFO L87 Difference]: Start difference. First operand 4376 states and 12355 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:09,057 INFO L93 Difference]: Finished difference Result 7236 states and 20083 transitions. [2022-02-10 22:44:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 22:44:09,058 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:09,071 INFO L225 Difference]: With dead ends: 7236 [2022-02-10 22:44:09,071 INFO L226 Difference]: Without dead ends: 7188 [2022-02-10 22:44:09,072 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=676, Invalid=2984, Unknown=0, NotChecked=0, Total=3660 [2022-02-10 22:44:09,072 INFO L934 BasicCegarLoop]: 139 mSDtfsCounter, 542 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:09,072 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1178 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:44:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2022-02-10 22:44:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5152. [2022-02-10 22:44:09,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 2.839254513686663) internal successors, (14625), 5151 states have internal predecessors, (14625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 14625 transitions. [2022-02-10 22:44:09,204 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 14625 transitions. Word has length 75 [2022-02-10 22:44:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:09,204 INFO L470 AbstractCegarLoop]: Abstraction has 5152 states and 14625 transitions. [2022-02-10 22:44:09,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 14625 transitions. [2022-02-10 22:44:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:09,213 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:09,213 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:09,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:09,430 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 [2022-02-10 22:44:09,430 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash -769747230, now seen corresponding path program 10 times [2022-02-10 22:44:09,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:09,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28640299] [2022-02-10 22:44:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:09,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:09,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:09,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28640299] [2022-02-10 22:44:09,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28640299] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:09,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092641298] [2022-02-10 22:44:09,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:44:09,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:09,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:09,540 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) [2022-02-10 22:44:09,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 22:44:09,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:44:09,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:09,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:09,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:09,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:09,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092641298] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:09,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:09,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:09,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359874915] [2022-02-10 22:44:09,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:09,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:09,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:09,913 INFO L87 Difference]: Start difference. First operand 5152 states and 14625 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:11,735 INFO L93 Difference]: Finished difference Result 8235 states and 22815 transitions. [2022-02-10 22:44:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 22:44:11,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:11,750 INFO L225 Difference]: With dead ends: 8235 [2022-02-10 22:44:11,750 INFO L226 Difference]: Without dead ends: 8175 [2022-02-10 22:44:11,751 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1162, Invalid=5158, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 22:44:11,752 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:11,752 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1395 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2022-02-10 22:44:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 5464. [2022-02-10 22:44:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5463 states have (on average 2.8407468423942888) internal successors, (15519), 5463 states have internal predecessors, (15519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 15519 transitions. [2022-02-10 22:44:11,874 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 15519 transitions. Word has length 75 [2022-02-10 22:44:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:11,874 INFO L470 AbstractCegarLoop]: Abstraction has 5464 states and 15519 transitions. [2022-02-10 22:44:11,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 15519 transitions. [2022-02-10 22:44:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:11,884 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:11,885 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:11,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:12,099 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 [2022-02-10 22:44:12,100 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1088159336, now seen corresponding path program 11 times [2022-02-10 22:44:12,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:12,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922271565] [2022-02-10 22:44:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:12,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:12,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922271565] [2022-02-10 22:44:12,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922271565] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:12,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626109686] [2022-02-10 22:44:12,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:44:12,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:12,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:12,198 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) [2022-02-10 22:44:12,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 22:44:12,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:44:12,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:12,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:12,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:12,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:12,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626109686] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:12,594 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:12,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:44:12,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722076185] [2022-02-10 22:44:12,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:12,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:44:12,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:44:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:44:12,595 INFO L87 Difference]: Start difference. First operand 5464 states and 15519 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:13,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:13,456 INFO L93 Difference]: Finished difference Result 6404 states and 18019 transitions. [2022-02-10 22:44:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 22:44:13,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:13,466 INFO L225 Difference]: With dead ends: 6404 [2022-02-10 22:44:13,466 INFO L226 Difference]: Without dead ends: 6332 [2022-02-10 22:44:13,467 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 22:44:13,467 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 273 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:13,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1549 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2022-02-10 22:44:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 5584. [2022-02-10 22:44:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 2.8366469639978504) internal successors, (15837), 5583 states have internal predecessors, (15837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 15837 transitions. [2022-02-10 22:44:13,558 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 15837 transitions. Word has length 75 [2022-02-10 22:44:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:13,559 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 15837 transitions. [2022-02-10 22:44:13,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 15837 transitions. [2022-02-10 22:44:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:13,568 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:13,568 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:13,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:13,779 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 [2022-02-10 22:44:13,779 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash 723432570, now seen corresponding path program 12 times [2022-02-10 22:44:13,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:13,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569253546] [2022-02-10 22:44:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:13,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:13,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569253546] [2022-02-10 22:44:13,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569253546] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:13,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66614638] [2022-02-10 22:44:13,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:44:13,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:13,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:13,862 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) [2022-02-10 22:44:13,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 22:44:13,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:44:13,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:13,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:13,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:14,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:14,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66614638] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:14,241 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:14,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:14,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360150483] [2022-02-10 22:44:14,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:14,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:14,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:14,242 INFO L87 Difference]: Start difference. First operand 5584 states and 15837 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:15,383 INFO L93 Difference]: Finished difference Result 7773 states and 21686 transitions. [2022-02-10 22:44:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 22:44:15,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:15,395 INFO L225 Difference]: With dead ends: 7773 [2022-02-10 22:44:15,395 INFO L226 Difference]: Without dead ends: 7725 [2022-02-10 22:44:15,396 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=680, Invalid=3102, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 22:44:15,396 INFO L934 BasicCegarLoop]: 144 mSDtfsCounter, 461 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:15,396 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1128 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:44:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7725 states. [2022-02-10 22:44:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7725 to 6084. [2022-02-10 22:44:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 2.842018740752918) internal successors, (17288), 6083 states have internal predecessors, (17288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 17288 transitions. [2022-02-10 22:44:15,497 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 17288 transitions. Word has length 75 [2022-02-10 22:44:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:15,497 INFO L470 AbstractCegarLoop]: Abstraction has 6084 states and 17288 transitions. [2022-02-10 22:44:15,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 17288 transitions. [2022-02-10 22:44:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:15,508 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:15,508 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:15,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:15,716 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 [2022-02-10 22:44:15,716 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash 744149956, now seen corresponding path program 13 times [2022-02-10 22:44:15,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:15,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887766151] [2022-02-10 22:44:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:15,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:15,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:15,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887766151] [2022-02-10 22:44:15,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887766151] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:15,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145153286] [2022-02-10 22:44:15,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:44:15,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:15,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:15,844 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) [2022-02-10 22:44:15,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 22:44:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:15,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:15,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:16,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:16,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145153286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:16,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:16,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:16,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999299584] [2022-02-10 22:44:16,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:16,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:16,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:16,200 INFO L87 Difference]: Start difference. First operand 6084 states and 17288 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:18,863 INFO L93 Difference]: Finished difference Result 9659 states and 26854 transitions. [2022-02-10 22:44:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 22:44:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:18,881 INFO L225 Difference]: With dead ends: 9659 [2022-02-10 22:44:18,881 INFO L226 Difference]: Without dead ends: 9599 [2022-02-10 22:44:18,882 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3599 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1688, Invalid=8212, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 22:44:18,883 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 555 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:18,883 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1989 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:44:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2022-02-10 22:44:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 6296. [2022-02-10 22:44:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 2.845909451945989) internal successors, (17915), 6295 states have internal predecessors, (17915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 17915 transitions. [2022-02-10 22:44:19,002 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 17915 transitions. Word has length 75 [2022-02-10 22:44:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:19,002 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 17915 transitions. [2022-02-10 22:44:19,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 17915 transitions. [2022-02-10 22:44:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:19,013 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:19,013 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:19,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:19,227 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 [2022-02-10 22:44:19,228 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash 345920998, now seen corresponding path program 14 times [2022-02-10 22:44:19,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:19,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750373273] [2022-02-10 22:44:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:19,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:19,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:19,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750373273] [2022-02-10 22:44:19,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750373273] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:19,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328186118] [2022-02-10 22:44:19,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:44:19,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:19,319 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) [2022-02-10 22:44:19,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 22:44:19,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:44:19,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:19,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:19,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328186118] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:19,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:19,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:19,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694533970] [2022-02-10 22:44:19,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:19,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:19,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:19,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:19,716 INFO L87 Difference]: Start difference. First operand 6296 states and 17915 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:21,374 INFO L93 Difference]: Finished difference Result 9212 states and 25881 transitions. [2022-02-10 22:44:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 22:44:21,374 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:21,391 INFO L225 Difference]: With dead ends: 9212 [2022-02-10 22:44:21,392 INFO L226 Difference]: Without dead ends: 9107 [2022-02-10 22:44:21,393 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1097, Invalid=5065, Unknown=0, NotChecked=0, Total=6162 [2022-02-10 22:44:21,393 INFO L934 BasicCegarLoop]: 128 mSDtfsCounter, 507 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:21,393 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1529 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2022-02-10 22:44:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 6668. [2022-02-10 22:44:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 2.8447577621118945) internal successors, (18966), 6667 states have internal predecessors, (18966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 18966 transitions. [2022-02-10 22:44:21,531 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 18966 transitions. Word has length 75 [2022-02-10 22:44:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:21,531 INFO L470 AbstractCegarLoop]: Abstraction has 6668 states and 18966 transitions. [2022-02-10 22:44:21,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 18966 transitions. [2022-02-10 22:44:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:21,545 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:21,545 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:21,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:21,762 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 [2022-02-10 22:44:21,762 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1061334052, now seen corresponding path program 15 times [2022-02-10 22:44:21,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:21,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261542687] [2022-02-10 22:44:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:21,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:21,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261542687] [2022-02-10 22:44:21,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261542687] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:21,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540460340] [2022-02-10 22:44:21,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:44:21,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:21,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:21,844 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) [2022-02-10 22:44:21,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 22:44:21,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:44:21,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:21,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:21,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:22,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:22,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540460340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:22,264 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:22,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:22,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060963730] [2022-02-10 22:44:22,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:22,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:22,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:22,266 INFO L87 Difference]: Start difference. First operand 6668 states and 18966 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:23,571 INFO L93 Difference]: Finished difference Result 10227 states and 28654 transitions. [2022-02-10 22:44:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 22:44:23,571 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:23,588 INFO L225 Difference]: With dead ends: 10227 [2022-02-10 22:44:23,589 INFO L226 Difference]: Without dead ends: 10179 [2022-02-10 22:44:23,590 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=790, Invalid=3632, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 22:44:23,590 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 503 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:23,590 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1442 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2022-02-10 22:44:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 7688. [2022-02-10 22:44:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7687 states have (on average 2.8477949785351893) internal successors, (21891), 7687 states have internal predecessors, (21891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 21891 transitions. [2022-02-10 22:44:23,755 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 21891 transitions. Word has length 75 [2022-02-10 22:44:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:23,756 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 21891 transitions. [2022-02-10 22:44:23,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:23,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 21891 transitions. [2022-02-10 22:44:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:23,765 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:23,766 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:23,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:23,966 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 [2022-02-10 22:44:23,966 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1040616666, now seen corresponding path program 16 times [2022-02-10 22:44:23,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:23,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852239277] [2022-02-10 22:44:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:24,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:24,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852239277] [2022-02-10 22:44:24,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852239277] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:24,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247840442] [2022-02-10 22:44:24,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:44:24,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:24,060 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) [2022-02-10 22:44:24,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 22:44:24,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:44:24,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:24,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:24,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:24,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:24,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247840442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:24,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:24,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:24,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40514474] [2022-02-10 22:44:24,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:24,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:24,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:24,417 INFO L87 Difference]: Start difference. First operand 7688 states and 21891 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:26,676 INFO L93 Difference]: Finished difference Result 11197 states and 31292 transitions. [2022-02-10 22:44:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 22:44:26,676 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:26,693 INFO L225 Difference]: With dead ends: 11197 [2022-02-10 22:44:26,694 INFO L226 Difference]: Without dead ends: 11137 [2022-02-10 22:44:26,694 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1413, Invalid=6597, Unknown=0, NotChecked=0, Total=8010 [2022-02-10 22:44:26,694 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 727 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:26,694 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1483 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:44:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2022-02-10 22:44:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 7824. [2022-02-10 22:44:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7824 states, 7823 states have (on average 2.8491627252972007) internal successors, (22289), 7823 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 22289 transitions. [2022-02-10 22:44:26,836 INFO L78 Accepts]: Start accepts. Automaton has 7824 states and 22289 transitions. Word has length 75 [2022-02-10 22:44:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:26,836 INFO L470 AbstractCegarLoop]: Abstraction has 7824 states and 22289 transitions. [2022-02-10 22:44:26,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7824 states and 22289 transitions. [2022-02-10 22:44:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:26,847 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:26,847 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:26,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:27,047 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 [2022-02-10 22:44:27,047 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1359028772, now seen corresponding path program 17 times [2022-02-10 22:44:27,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:27,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020331865] [2022-02-10 22:44:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:27,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:27,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020331865] [2022-02-10 22:44:27,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020331865] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:27,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823275470] [2022-02-10 22:44:27,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:44:27,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:27,129 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) [2022-02-10 22:44:27,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 22:44:27,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:44:27,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:27,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:27,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:27,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:27,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823275470] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:27,510 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:27,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:44:27,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192909400] [2022-02-10 22:44:27,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:27,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:44:27,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:44:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:44:27,511 INFO L87 Difference]: Start difference. First operand 7824 states and 22289 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:28,353 INFO L93 Difference]: Finished difference Result 8740 states and 24715 transitions. [2022-02-10 22:44:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 22:44:28,353 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:28,368 INFO L225 Difference]: With dead ends: 8740 [2022-02-10 22:44:28,368 INFO L226 Difference]: Without dead ends: 8668 [2022-02-10 22:44:28,369 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=2037, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 22:44:28,369 INFO L934 BasicCegarLoop]: 127 mSDtfsCounter, 297 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:28,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1369 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:44:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2022-02-10 22:44:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 7940. [2022-02-10 22:44:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7940 states, 7939 states have (on average 2.846706134273838) internal successors, (22600), 7939 states have internal predecessors, (22600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 22600 transitions. [2022-02-10 22:44:28,497 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 22600 transitions. Word has length 75 [2022-02-10 22:44:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:28,497 INFO L470 AbstractCegarLoop]: Abstraction has 7940 states and 22600 transitions. [2022-02-10 22:44:28,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 22600 transitions. [2022-02-10 22:44:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:28,508 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:28,509 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:28,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:28,724 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 [2022-02-10 22:44:28,725 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1556288346, now seen corresponding path program 18 times [2022-02-10 22:44:28,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:28,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107256235] [2022-02-10 22:44:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:28,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:28,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107256235] [2022-02-10 22:44:28,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107256235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:28,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585766903] [2022-02-10 22:44:28,844 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:44:28,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:28,845 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) [2022-02-10 22:44:28,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 22:44:28,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:44:28,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:28,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:28,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:29,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:29,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585766903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:29,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:29,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:29,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352507662] [2022-02-10 22:44:29,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:29,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:29,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:29,245 INFO L87 Difference]: Start difference. First operand 7940 states and 22600 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:30,468 INFO L93 Difference]: Finished difference Result 12785 states and 36011 transitions. [2022-02-10 22:44:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 22:44:30,469 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:30,491 INFO L225 Difference]: With dead ends: 12785 [2022-02-10 22:44:30,492 INFO L226 Difference]: Without dead ends: 12737 [2022-02-10 22:44:30,492 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=756, Invalid=3026, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 22:44:30,493 INFO L934 BasicCegarLoop]: 130 mSDtfsCounter, 606 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:30,493 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2022-02-10 22:44:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 9228. [2022-02-10 22:44:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 2.849680286116831) internal successors, (26294), 9227 states have internal predecessors, (26294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 26294 transitions. [2022-02-10 22:44:30,665 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 26294 transitions. Word has length 75 [2022-02-10 22:44:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:30,665 INFO L470 AbstractCegarLoop]: Abstraction has 9228 states and 26294 transitions. [2022-02-10 22:44:30,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 26294 transitions. [2022-02-10 22:44:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:30,678 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:30,678 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:30,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-10 22:44:30,879 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 [2022-02-10 22:44:30,879 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:30,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1535570960, now seen corresponding path program 19 times [2022-02-10 22:44:30,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:30,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108643790] [2022-02-10 22:44:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:30,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:30,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108643790] [2022-02-10 22:44:30,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108643790] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:30,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625942766] [2022-02-10 22:44:30,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:44:30,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:30,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:30,976 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) [2022-02-10 22:44:31,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 22:44:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:31,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:31,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:31,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:31,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625942766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:31,363 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:31,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 22:44:31,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82300414] [2022-02-10 22:44:31,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:44:31,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:44:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:44:31,364 INFO L87 Difference]: Start difference. First operand 9228 states and 26294 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:33,358 INFO L93 Difference]: Finished difference Result 13632 states and 38321 transitions. [2022-02-10 22:44:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 22:44:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:33,381 INFO L225 Difference]: With dead ends: 13632 [2022-02-10 22:44:33,382 INFO L226 Difference]: Without dead ends: 13572 [2022-02-10 22:44:33,382 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1291, Invalid=5351, Unknown=0, NotChecked=0, Total=6642 [2022-02-10 22:44:33,383 INFO L934 BasicCegarLoop]: 151 mSDtfsCounter, 720 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:33,383 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1610 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:44:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13572 states. [2022-02-10 22:44:33,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13572 to 9472. [2022-02-10 22:44:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 9471 states have (on average 2.851335656213705) internal successors, (27005), 9471 states have internal predecessors, (27005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 27005 transitions. [2022-02-10 22:44:33,556 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 27005 transitions. Word has length 75 [2022-02-10 22:44:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:33,557 INFO L470 AbstractCegarLoop]: Abstraction has 9472 states and 27005 transitions. [2022-02-10 22:44:33,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 27005 transitions. [2022-02-10 22:44:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:33,591 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:33,591 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:33,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:33,801 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 [2022-02-10 22:44:33,801 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1853983066, now seen corresponding path program 20 times [2022-02-10 22:44:33,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:33,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769652294] [2022-02-10 22:44:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:33,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:33,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769652294] [2022-02-10 22:44:33,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769652294] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:33,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801119157] [2022-02-10 22:44:33,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:44:33,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:33,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:33,912 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) [2022-02-10 22:44:33,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 22:44:33,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:44:33,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:33,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:33,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:34,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:34,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801119157] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:34,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:34,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:34,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593881158] [2022-02-10 22:44:34,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:34,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:34,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:34,300 INFO L87 Difference]: Start difference. First operand 9472 states and 27005 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:35,134 INFO L93 Difference]: Finished difference Result 10784 states and 30439 transitions. [2022-02-10 22:44:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 22:44:35,134 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:35,153 INFO L225 Difference]: With dead ends: 10784 [2022-02-10 22:44:35,153 INFO L226 Difference]: Without dead ends: 10712 [2022-02-10 22:44:35,153 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 22:44:35,154 INFO L934 BasicCegarLoop]: 126 mSDtfsCounter, 374 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:35,154 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1296 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:44:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10712 states. [2022-02-10 22:44:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10712 to 9616. [2022-02-10 22:44:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9616 states, 9615 states have (on average 2.8510660426417056) internal successors, (27413), 9615 states have internal predecessors, (27413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 27413 transitions. [2022-02-10 22:44:35,314 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 27413 transitions. Word has length 75 [2022-02-10 22:44:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:35,314 INFO L470 AbstractCegarLoop]: Abstraction has 9616 states and 27413 transitions. [2022-02-10 22:44:35,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 27413 transitions. [2022-02-10 22:44:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:35,363 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:35,363 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:35,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:35,575 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 [2022-02-10 22:44:35,575 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1620543276, now seen corresponding path program 21 times [2022-02-10 22:44:35,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:35,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815916542] [2022-02-10 22:44:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:35,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:35,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815916542] [2022-02-10 22:44:35,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815916542] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:35,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510533870] [2022-02-10 22:44:35,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:44:35,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:35,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:35,661 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) [2022-02-10 22:44:35,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 22:44:35,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:44:35,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:35,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:35,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:35,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:36,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510533870] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:36,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:36,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:44:36,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339797894] [2022-02-10 22:44:36,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:36,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:44:36,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:44:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:44:36,021 INFO L87 Difference]: Start difference. First operand 9616 states and 27413 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:36,458 INFO L93 Difference]: Finished difference Result 10060 states and 28541 transitions. [2022-02-10 22:44:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 22:44:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:36,474 INFO L225 Difference]: With dead ends: 10060 [2022-02-10 22:44:36,474 INFO L226 Difference]: Without dead ends: 10012 [2022-02-10 22:44:36,475 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:44:36,475 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 247 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:36,475 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 956 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:44:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2022-02-10 22:44:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9640. [2022-02-10 22:44:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9640 states, 9639 states have (on average 2.8495694574125947) internal successors, (27467), 9639 states have internal predecessors, (27467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 27467 transitions. [2022-02-10 22:44:36,623 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 27467 transitions. Word has length 75 [2022-02-10 22:44:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:36,623 INFO L470 AbstractCegarLoop]: Abstraction has 9640 states and 27467 transitions. [2022-02-10 22:44:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 27467 transitions. [2022-02-10 22:44:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:36,636 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:36,636 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:36,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:36,836 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 [2022-02-10 22:44:36,836 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1305078476, now seen corresponding path program 22 times [2022-02-10 22:44:36,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:36,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036698309] [2022-02-10 22:44:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:36,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:36,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036698309] [2022-02-10 22:44:36,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036698309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:36,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853069834] [2022-02-10 22:44:36,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:44:36,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:36,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:36,934 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) [2022-02-10 22:44:36,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 22:44:36,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:44:36,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:36,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:36,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:37,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:37,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853069834] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:37,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:37,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:37,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638874179] [2022-02-10 22:44:37,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:37,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:37,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:37,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:37,343 INFO L87 Difference]: Start difference. First operand 9640 states and 27467 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:38,429 INFO L93 Difference]: Finished difference Result 13911 states and 39419 transitions. [2022-02-10 22:44:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 22:44:38,430 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-10 22:44:38,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:38,454 INFO L225 Difference]: With dead ends: 13911 [2022-02-10 22:44:38,454 INFO L226 Difference]: Without dead ends: 13887 [2022-02-10 22:44:38,455 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=891, Invalid=4365, Unknown=0, NotChecked=0, Total=5256 [2022-02-10 22:44:38,455 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 808 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:38,455 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 1347 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:44:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2022-02-10 22:44:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 9952. [2022-02-10 22:44:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9952 states, 9951 states have (on average 2.8531805848658425) internal successors, (28392), 9951 states have internal predecessors, (28392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9952 states to 9952 states and 28392 transitions. [2022-02-10 22:44:38,648 INFO L78 Accepts]: Start accepts. Automaton has 9952 states and 28392 transitions. Word has length 75 [2022-02-10 22:44:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:38,648 INFO L470 AbstractCegarLoop]: Abstraction has 9952 states and 28392 transitions. [2022-02-10 22:44:38,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9952 states and 28392 transitions. [2022-02-10 22:44:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:38,692 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:38,693 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:38,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:38,893 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 [2022-02-10 22:44:38,893 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361090, now seen corresponding path program 23 times [2022-02-10 22:44:38,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:38,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417001905] [2022-02-10 22:44:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:38,983 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:38,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417001905] [2022-02-10 22:44:38,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417001905] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:38,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123023901] [2022-02-10 22:44:38,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:44:38,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:38,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:38,984 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) [2022-02-10 22:44:38,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 22:44:39,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:44:39,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:39,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:44:39,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:39,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:39,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123023901] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:39,500 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:39,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-02-10 22:44:39,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812484535] [2022-02-10 22:44:39,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:39,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:44:39,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:44:39,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:44:39,501 INFO L87 Difference]: Start difference. First operand 9952 states and 28392 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:41,873 INFO L93 Difference]: Finished difference Result 14859 states and 41765 transitions. [2022-02-10 22:44:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 22:44:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:41,901 INFO L225 Difference]: With dead ends: 14859 [2022-02-10 22:44:41,901 INFO L226 Difference]: Without dead ends: 14814 [2022-02-10 22:44:41,903 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1567, Invalid=7175, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 22:44:41,903 INFO L934 BasicCegarLoop]: 240 mSDtfsCounter, 1420 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:41,903 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1976 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:44:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14814 states. [2022-02-10 22:44:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14814 to 9836. [2022-02-10 22:44:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 2.85246568378241) internal successors, (28054), 9835 states have internal predecessors, (28054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 28054 transitions. [2022-02-10 22:44:42,119 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 28054 transitions. Word has length 75 [2022-02-10 22:44:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:42,119 INFO L470 AbstractCegarLoop]: Abstraction has 9836 states and 28054 transitions. [2022-02-10 22:44:42,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 28054 transitions. [2022-02-10 22:44:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:42,133 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:42,133 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:42,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:42,333 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 [2022-02-10 22:44:42,333 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:42,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:42,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1906375620, now seen corresponding path program 24 times [2022-02-10 22:44:42,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:42,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290194182] [2022-02-10 22:44:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:42,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:42,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:42,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290194182] [2022-02-10 22:44:42,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290194182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:42,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572705014] [2022-02-10 22:44:42,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:44:42,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:42,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:42,428 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) [2022-02-10 22:44:42,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 22:44:42,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:44:42,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:42,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:42,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:42,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:42,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572705014] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:42,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:42,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:42,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804656920] [2022-02-10 22:44:42,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:42,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:42,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:42,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:42,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:42,832 INFO L87 Difference]: Start difference. First operand 9836 states and 28054 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:44,426 INFO L93 Difference]: Finished difference Result 13587 states and 38339 transitions. [2022-02-10 22:44:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-10 22:44:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:44,451 INFO L225 Difference]: With dead ends: 13587 [2022-02-10 22:44:44,451 INFO L226 Difference]: Without dead ends: 13512 [2022-02-10 22:44:44,453 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1294, Invalid=6362, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 22:44:44,453 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 625 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:44,453 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2063 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-02-10 22:44:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 10124. [2022-02-10 22:44:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.854292205867826) internal successors, (28894), 10123 states have internal predecessors, (28894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28894 transitions. [2022-02-10 22:44:44,666 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28894 transitions. Word has length 75 [2022-02-10 22:44:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:44,667 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28894 transitions. [2022-02-10 22:44:44,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28894 transitions. [2022-02-10 22:44:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:44,681 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:44,681 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:44,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:44,881 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 [2022-02-10 22:44:44,882 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1356812648, now seen corresponding path program 25 times [2022-02-10 22:44:44,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:44,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57932422] [2022-02-10 22:44:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:44,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:44,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57932422] [2022-02-10 22:44:44,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57932422] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:44,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126202705] [2022-02-10 22:44:44,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:44:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:44,960 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) [2022-02-10 22:44:44,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 22:44:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:45,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:45,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:45,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:45,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126202705] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:45,313 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:45,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:45,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439748835] [2022-02-10 22:44:45,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:45,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:45,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:45,314 INFO L87 Difference]: Start difference. First operand 10124 states and 28894 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:46,502 INFO L93 Difference]: Finished difference Result 13500 states and 38140 transitions. [2022-02-10 22:44:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 22:44:46,502 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:46,533 INFO L225 Difference]: With dead ends: 13500 [2022-02-10 22:44:46,533 INFO L226 Difference]: Without dead ends: 13410 [2022-02-10 22:44:46,534 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=927, Invalid=4185, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 22:44:46,534 INFO L934 BasicCegarLoop]: 176 mSDtfsCounter, 523 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:46,534 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1915 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:44:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13410 states. [2022-02-10 22:44:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13410 to 10124. [2022-02-10 22:44:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.8531067865257334) internal successors, (28882), 10123 states have internal predecessors, (28882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28882 transitions. [2022-02-10 22:44:46,761 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28882 transitions. Word has length 75 [2022-02-10 22:44:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:46,762 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28882 transitions. [2022-02-10 22:44:46,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28882 transitions. [2022-02-10 22:44:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:46,777 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:46,777 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:46,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:46,977 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 [2022-02-10 22:44:46,978 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1594629350, now seen corresponding path program 26 times [2022-02-10 22:44:46,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:46,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588969552] [2022-02-10 22:44:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:47,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:47,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588969552] [2022-02-10 22:44:47,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588969552] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:47,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092872352] [2022-02-10 22:44:47,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:44:47,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:47,099 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) [2022-02-10 22:44:47,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 22:44:47,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:44:47,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:47,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:47,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:47,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092872352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:47,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:47,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-02-10 22:44:47,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603987235] [2022-02-10 22:44:47,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:47,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 22:44:47,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:47,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 22:44:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:44:47,437 INFO L87 Difference]: Start difference. First operand 10124 states and 28882 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:48,336 INFO L93 Difference]: Finished difference Result 13442 states and 38145 transitions. [2022-02-10 22:44:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 22:44:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:48,361 INFO L225 Difference]: With dead ends: 13442 [2022-02-10 22:44:48,361 INFO L226 Difference]: Without dead ends: 13382 [2022-02-10 22:44:48,361 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 22:44:48,362 INFO L934 BasicCegarLoop]: 183 mSDtfsCounter, 522 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:48,363 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1622 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:44:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2022-02-10 22:44:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 10064. [2022-02-10 22:44:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 10063 states have (on average 2.8505415879956275) internal successors, (28685), 10063 states have internal predecessors, (28685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 28685 transitions. [2022-02-10 22:44:48,593 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 28685 transitions. Word has length 75 [2022-02-10 22:44:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:48,594 INFO L470 AbstractCegarLoop]: Abstraction has 10064 states and 28685 transitions. [2022-02-10 22:44:48,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:48,594 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 28685 transitions. [2022-02-10 22:44:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:48,608 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:48,608 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:48,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 22:44:48,811 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 [2022-02-10 22:44:48,811 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:48,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1909193570, now seen corresponding path program 27 times [2022-02-10 22:44:48,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:48,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24066150] [2022-02-10 22:44:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:48,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:48,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24066150] [2022-02-10 22:44:48,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24066150] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:48,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518245084] [2022-02-10 22:44:48,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:44:48,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:48,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:48,897 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) [2022-02-10 22:44:48,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 22:44:48,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:44:48,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:48,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:48,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:49,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:49,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518245084] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:49,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:49,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:44:49,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768659100] [2022-02-10 22:44:49,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:49,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:44:49,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:44:49,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:44:49,307 INFO L87 Difference]: Start difference. First operand 10064 states and 28685 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:52,915 INFO L93 Difference]: Finished difference Result 13835 states and 38920 transitions. [2022-02-10 22:44:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-02-10 22:44:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:52,940 INFO L225 Difference]: With dead ends: 13835 [2022-02-10 22:44:52,940 INFO L226 Difference]: Without dead ends: 13685 [2022-02-10 22:44:52,941 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7133 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2600, Invalid=16306, Unknown=0, NotChecked=0, Total=18906 [2022-02-10 22:44:52,941 INFO L934 BasicCegarLoop]: 185 mSDtfsCounter, 626 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:52,941 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2027 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:44:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13685 states. [2022-02-10 22:44:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13685 to 10524. [2022-02-10 22:44:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10524 states, 10523 states have (on average 2.8526085717000855) internal successors, (30018), 10523 states have internal predecessors, (30018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 30018 transitions. [2022-02-10 22:44:53,126 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 30018 transitions. Word has length 75 [2022-02-10 22:44:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:53,126 INFO L470 AbstractCegarLoop]: Abstraction has 10524 states and 30018 transitions. [2022-02-10 22:44:53,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 30018 transitions. [2022-02-10 22:44:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:53,140 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:53,140 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:53,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:53,341 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 [2022-02-10 22:44:53,341 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:53,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1359630598, now seen corresponding path program 28 times [2022-02-10 22:44:53,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:53,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408323843] [2022-02-10 22:44:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:53,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:53,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:53,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408323843] [2022-02-10 22:44:53,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408323843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:53,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740753425] [2022-02-10 22:44:53,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:44:53,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:53,421 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) [2022-02-10 22:44:53,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 22:44:53,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:44:53,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:53,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:44:53,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:53,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:53,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740753425] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:53,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:53,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:44:53,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654254525] [2022-02-10 22:44:53,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:53,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:44:53,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:44:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:44:53,791 INFO L87 Difference]: Start difference. First operand 10524 states and 30018 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:55,592 INFO L93 Difference]: Finished difference Result 13590 states and 38411 transitions. [2022-02-10 22:44:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 22:44:55,593 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:55,658 INFO L225 Difference]: With dead ends: 13590 [2022-02-10 22:44:55,658 INFO L226 Difference]: Without dead ends: 13500 [2022-02-10 22:44:55,658 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1039, Invalid=5767, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 22:44:55,659 INFO L934 BasicCegarLoop]: 171 mSDtfsCounter, 491 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:55,659 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1854 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:44:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2022-02-10 22:44:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 10508. [2022-02-10 22:44:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10508 states, 10507 states have (on average 2.84971923479585) internal successors, (29942), 10507 states have internal predecessors, (29942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10508 states to 10508 states and 29942 transitions. [2022-02-10 22:44:55,825 INFO L78 Accepts]: Start accepts. Automaton has 10508 states and 29942 transitions. Word has length 75 [2022-02-10 22:44:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:55,825 INFO L470 AbstractCegarLoop]: Abstraction has 10508 states and 29942 transitions. [2022-02-10 22:44:55,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10508 states and 29942 transitions. [2022-02-10 22:44:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:55,839 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:55,839 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:55,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 22:44:56,040 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 [2022-02-10 22:44:56,040 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:44:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:44:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash -796141068, now seen corresponding path program 29 times [2022-02-10 22:44:56,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:44:56,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309158650] [2022-02-10 22:44:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:44:56,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:44:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:44:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:56,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:44:56,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309158650] [2022-02-10 22:44:56,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309158650] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:44:56,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707896561] [2022-02-10 22:44:56,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:44:56,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:44:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:44:56,111 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) [2022-02-10 22:44:56,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 22:44:56,159 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:44:56,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:44:56,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:44:56,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:44:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:56,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:44:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:44:56,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707896561] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:44:56,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:44:56,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-10 22:44:56,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995135816] [2022-02-10 22:44:56,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:44:56,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:44:56,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:44:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:44:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:44:56,579 INFO L87 Difference]: Start difference. First operand 10508 states and 29942 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:44:59,668 INFO L93 Difference]: Finished difference Result 14449 states and 40857 transitions. [2022-02-10 22:44:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-10 22:44:59,669 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 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 75 [2022-02-10 22:44:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:44:59,695 INFO L225 Difference]: With dead ends: 14449 [2022-02-10 22:44:59,695 INFO L226 Difference]: Without dead ends: 14401 [2022-02-10 22:44:59,696 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4938 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2058, Invalid=11514, Unknown=0, NotChecked=0, Total=13572 [2022-02-10 22:44:59,696 INFO L934 BasicCegarLoop]: 190 mSDtfsCounter, 885 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:44:59,696 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 2321 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:44:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-02-10 22:44:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 11468. [2022-02-10 22:44:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11468 states, 11467 states have (on average 2.8532310107264323) internal successors, (32718), 11467 states have internal predecessors, (32718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 32718 transitions. [2022-02-10 22:44:59,899 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 32718 transitions. Word has length 75 [2022-02-10 22:44:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:44:59,899 INFO L470 AbstractCegarLoop]: Abstraction has 11468 states and 32718 transitions. [2022-02-10 22:44:59,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:44:59,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 32718 transitions. [2022-02-10 22:44:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:44:59,914 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:44:59,914 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:44:59,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-10 22:45:00,114 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 [2022-02-10 22:45:00,115 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1419924444, now seen corresponding path program 30 times [2022-02-10 22:45:00,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:00,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466955545] [2022-02-10 22:45:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:00,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:00,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466955545] [2022-02-10 22:45:00,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466955545] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:00,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162078868] [2022-02-10 22:45:00,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:45:00,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:00,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:00,197 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) [2022-02-10 22:45:00,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 22:45:00,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:45:00,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:00,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:00,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:00,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:00,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162078868] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:00,556 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:00,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:00,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104873076] [2022-02-10 22:45:00,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:00,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:00,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:00,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:00,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:00,557 INFO L87 Difference]: Start difference. First operand 11468 states and 32718 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:04,074 INFO L93 Difference]: Finished difference Result 16177 states and 45532 transitions. [2022-02-10 22:45:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-10 22:45:04,075 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:04,107 INFO L225 Difference]: With dead ends: 16177 [2022-02-10 22:45:04,107 INFO L226 Difference]: Without dead ends: 16117 [2022-02-10 22:45:04,109 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7362 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2857, Invalid=15503, Unknown=0, NotChecked=0, Total=18360 [2022-02-10 22:45:04,109 INFO L934 BasicCegarLoop]: 164 mSDtfsCounter, 795 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:04,109 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1975 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:45:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16117 states. [2022-02-10 22:45:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16117 to 12112. [2022-02-10 22:45:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 12111 states have (on average 2.860622574519032) internal successors, (34645), 12111 states have internal predecessors, (34645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 34645 transitions. [2022-02-10 22:45:04,338 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 34645 transitions. Word has length 75 [2022-02-10 22:45:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:04,339 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 34645 transitions. [2022-02-10 22:45:04,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 34645 transitions. [2022-02-10 22:45:04,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:04,355 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:04,355 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:04,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-10 22:45:04,556 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 [2022-02-10 22:45:04,556 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1818153402, now seen corresponding path program 31 times [2022-02-10 22:45:04,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:04,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797479396] [2022-02-10 22:45:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:04,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:04,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797479396] [2022-02-10 22:45:04,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797479396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:04,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651431528] [2022-02-10 22:45:04,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:45:04,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:04,638 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) [2022-02-10 22:45:04,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 22:45:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:04,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:04,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:04,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:05,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651431528] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:05,048 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:05,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:05,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558878972] [2022-02-10 22:45:05,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:05,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:05,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:05,049 INFO L87 Difference]: Start difference. First operand 12112 states and 34645 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:07,027 INFO L93 Difference]: Finished difference Result 14497 states and 41139 transitions. [2022-02-10 22:45:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-10 22:45:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:07,056 INFO L225 Difference]: With dead ends: 14497 [2022-02-10 22:45:07,056 INFO L226 Difference]: Without dead ends: 14407 [2022-02-10 22:45:07,057 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1418, Invalid=7324, Unknown=0, NotChecked=0, Total=8742 [2022-02-10 22:45:07,057 INFO L934 BasicCegarLoop]: 159 mSDtfsCounter, 475 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:07,058 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1908 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:45:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2022-02-10 22:45:07,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 12140. [2022-02-10 22:45:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 12139 states have (on average 2.857401762912925) internal successors, (34686), 12139 states have internal predecessors, (34686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 34686 transitions. [2022-02-10 22:45:07,282 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 34686 transitions. Word has length 75 [2022-02-10 22:45:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:07,282 INFO L470 AbstractCegarLoop]: Abstraction has 12140 states and 34686 transitions. [2022-02-10 22:45:07,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 34686 transitions. [2022-02-10 22:45:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:07,299 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:07,299 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:07,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-10 22:45:07,499 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 [2022-02-10 22:45:07,500 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059606, now seen corresponding path program 32 times [2022-02-10 22:45:07,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:07,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681896399] [2022-02-10 22:45:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:07,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:07,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:07,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681896399] [2022-02-10 22:45:07,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681896399] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:07,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067856849] [2022-02-10 22:45:07,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:45:07,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:07,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:07,600 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) [2022-02-10 22:45:07,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 22:45:07,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:45:07,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:07,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:07,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:07,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:07,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067856849] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:07,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:07,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:07,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423492819] [2022-02-10 22:45:07,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:07,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:07,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:07,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:07,994 INFO L87 Difference]: Start difference. First operand 12140 states and 34686 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:09,255 INFO L93 Difference]: Finished difference Result 14819 states and 41810 transitions. [2022-02-10 22:45:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 22:45:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:09,285 INFO L225 Difference]: With dead ends: 14819 [2022-02-10 22:45:09,285 INFO L226 Difference]: Without dead ends: 14771 [2022-02-10 22:45:09,286 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=792, Invalid=3498, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 22:45:09,286 INFO L934 BasicCegarLoop]: 150 mSDtfsCounter, 621 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:09,286 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1288 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:45:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2022-02-10 22:45:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 12640. [2022-02-10 22:45:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 12639 states have (on average 2.8597990347337605) internal successors, (36145), 12639 states have internal predecessors, (36145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 36145 transitions. [2022-02-10 22:45:09,537 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 36145 transitions. Word has length 75 [2022-02-10 22:45:09,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:09,537 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 36145 transitions. [2022-02-10 22:45:09,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 36145 transitions. [2022-02-10 22:45:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:09,559 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:09,559 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:09,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:09,777 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 [2022-02-10 22:45:09,777 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1734776992, now seen corresponding path program 33 times [2022-02-10 22:45:09,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:09,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026823002] [2022-02-10 22:45:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:09,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:09,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026823002] [2022-02-10 22:45:09,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026823002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:09,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314491205] [2022-02-10 22:45:09,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:45:09,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:09,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:09,862 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) [2022-02-10 22:45:09,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 22:45:09,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:45:09,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:09,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:09,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:10,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:10,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314491205] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:10,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:10,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:10,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843627556] [2022-02-10 22:45:10,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:10,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:10,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:10,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:10,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:10,216 INFO L87 Difference]: Start difference. First operand 12640 states and 36145 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:12,223 INFO L93 Difference]: Finished difference Result 15902 states and 44805 transitions. [2022-02-10 22:45:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-10 22:45:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:12,254 INFO L225 Difference]: With dead ends: 15902 [2022-02-10 22:45:12,254 INFO L226 Difference]: Without dead ends: 15842 [2022-02-10 22:45:12,255 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1467, Invalid=6905, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 22:45:12,256 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 826 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:12,256 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1766 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:45:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15842 states. [2022-02-10 22:45:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15842 to 12380. [2022-02-10 22:45:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.855319492689232) internal successors, (35346), 12379 states have internal predecessors, (35346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35346 transitions. [2022-02-10 22:45:12,516 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35346 transitions. Word has length 75 [2022-02-10 22:45:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:12,516 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35346 transitions. [2022-02-10 22:45:12,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35346 transitions. [2022-02-10 22:45:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:12,536 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:12,536 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:12,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:12,736 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 [2022-02-10 22:45:12,736 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:12,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1416364886, now seen corresponding path program 34 times [2022-02-10 22:45:12,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:12,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244338667] [2022-02-10 22:45:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:12,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:12,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244338667] [2022-02-10 22:45:12,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244338667] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:12,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122046258] [2022-02-10 22:45:12,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:45:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:12,807 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) [2022-02-10 22:45:12,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 22:45:12,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:45:12,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:12,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:12,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:12,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:13,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122046258] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:13,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:13,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:45:13,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825890740] [2022-02-10 22:45:13,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:13,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:45:13,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:45:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:45:13,149 INFO L87 Difference]: Start difference. First operand 12380 states and 35346 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:13,760 INFO L93 Difference]: Finished difference Result 12832 states and 36524 transitions. [2022-02-10 22:45:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-10 22:45:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:13,781 INFO L225 Difference]: With dead ends: 12832 [2022-02-10 22:45:13,782 INFO L226 Difference]: Without dead ends: 12796 [2022-02-10 22:45:13,782 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1360, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 22:45:13,782 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 288 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:13,782 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1230 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:45:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12796 states. [2022-02-10 22:45:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12796 to 12380. [2022-02-10 22:45:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.8549963648113743) internal successors, (35342), 12379 states have internal predecessors, (35342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35342 transitions. [2022-02-10 22:45:13,991 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35342 transitions. Word has length 75 [2022-02-10 22:45:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:13,991 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35342 transitions. [2022-02-10 22:45:13,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35342 transitions. [2022-02-10 22:45:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:14,010 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:14,010 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:14,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:14,211 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 [2022-02-10 22:45:14,211 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:14,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1192039042, now seen corresponding path program 35 times [2022-02-10 22:45:14,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:14,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858577452] [2022-02-10 22:45:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:14,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:14,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858577452] [2022-02-10 22:45:14,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858577452] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:14,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747758442] [2022-02-10 22:45:14,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:45:14,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:14,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:14,302 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) [2022-02-10 22:45:14,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 22:45:14,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:45:14,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:14,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:14,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:14,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:14,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747758442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:14,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:14,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:14,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275550506] [2022-02-10 22:45:14,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:14,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:14,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:14,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:14,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:14,684 INFO L87 Difference]: Start difference. First operand 12380 states and 35342 transitions. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:17,285 INFO L93 Difference]: Finished difference Result 21100 states and 59755 transitions. [2022-02-10 22:45:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-10 22:45:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:17,323 INFO L225 Difference]: With dead ends: 21100 [2022-02-10 22:45:17,323 INFO L226 Difference]: Without dead ends: 21052 [2022-02-10 22:45:17,324 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1406, Invalid=8100, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 22:45:17,324 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 636 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:17,324 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1750 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:45:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2022-02-10 22:45:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 13940. [2022-02-10 22:45:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13940 states, 13939 states have (on average 2.869072386828323) internal successors, (39992), 13939 states have internal predecessors, (39992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13940 states to 13940 states and 39992 transitions. [2022-02-10 22:45:17,610 INFO L78 Accepts]: Start accepts. Automaton has 13940 states and 39992 transitions. Word has length 75 [2022-02-10 22:45:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:17,610 INFO L470 AbstractCegarLoop]: Abstraction has 13940 states and 39992 transitions. [2022-02-10 22:45:17,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 13940 states and 39992 transitions. [2022-02-10 22:45:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:17,629 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:17,630 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:17,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:17,830 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 [2022-02-10 22:45:17,830 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1171321656, now seen corresponding path program 36 times [2022-02-10 22:45:17,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:17,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051393949] [2022-02-10 22:45:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:17,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:17,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051393949] [2022-02-10 22:45:17,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051393949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:17,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561502004] [2022-02-10 22:45:17,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:45:17,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:17,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:17,925 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) [2022-02-10 22:45:17,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 22:45:18,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:45:18,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:18,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:18,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:18,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:18,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561502004] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:18,286 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:18,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 22:45:18,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500707195] [2022-02-10 22:45:18,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:18,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:45:18,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:45:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:45:18,287 INFO L87 Difference]: Start difference. First operand 13940 states and 39992 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:21,847 INFO L93 Difference]: Finished difference Result 23366 states and 66194 transitions. [2022-02-10 22:45:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 22:45:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:21,891 INFO L225 Difference]: With dead ends: 23366 [2022-02-10 22:45:21,891 INFO L226 Difference]: Without dead ends: 23306 [2022-02-10 22:45:21,893 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2009, Invalid=8911, Unknown=0, NotChecked=0, Total=10920 [2022-02-10 22:45:21,893 INFO L934 BasicCegarLoop]: 189 mSDtfsCounter, 827 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:21,893 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1936 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-10 22:45:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23306 states. [2022-02-10 22:45:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23306 to 14704. [2022-02-10 22:45:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14704 states, 14703 states have (on average 2.873767258382643) internal successors, (42253), 14703 states have internal predecessors, (42253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 42253 transitions. [2022-02-10 22:45:22,255 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 42253 transitions. Word has length 75 [2022-02-10 22:45:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:22,255 INFO L470 AbstractCegarLoop]: Abstraction has 14704 states and 42253 transitions. [2022-02-10 22:45:22,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 42253 transitions. [2022-02-10 22:45:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:22,274 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:22,275 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:22,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:22,475 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 [2022-02-10 22:45:22,475 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1569550614, now seen corresponding path program 37 times [2022-02-10 22:45:22,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:22,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439467294] [2022-02-10 22:45:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:22,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:22,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439467294] [2022-02-10 22:45:22,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439467294] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:22,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984876480] [2022-02-10 22:45:22,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:45:22,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:22,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:22,566 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) [2022-02-10 22:45:22,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 22:45:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:22,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:22,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:22,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:22,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984876480] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:22,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:22,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:22,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082901940] [2022-02-10 22:45:22,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:22,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:22,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:22,919 INFO L87 Difference]: Start difference. First operand 14704 states and 42253 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:26,001 INFO L93 Difference]: Finished difference Result 23910 states and 68020 transitions. [2022-02-10 22:45:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-10 22:45:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:26,048 INFO L225 Difference]: With dead ends: 23910 [2022-02-10 22:45:26,049 INFO L226 Difference]: Without dead ends: 23745 [2022-02-10 22:45:26,050 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4628 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1812, Invalid=10398, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 22:45:26,051 INFO L934 BasicCegarLoop]: 190 mSDtfsCounter, 602 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:26,051 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2130 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:45:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23745 states. [2022-02-10 22:45:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23745 to 15332. [2022-02-10 22:45:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 15331 states have (on average 2.87495923292675) internal successors, (44076), 15331 states have internal predecessors, (44076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 44076 transitions. [2022-02-10 22:45:26,438 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 44076 transitions. Word has length 75 [2022-02-10 22:45:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:26,438 INFO L470 AbstractCegarLoop]: Abstraction has 15332 states and 44076 transitions. [2022-02-10 22:45:26,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 44076 transitions. [2022-02-10 22:45:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:26,459 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:26,459 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:26,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 22:45:26,659 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 [2022-02-10 22:45:26,659 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:26,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1019987642, now seen corresponding path program 38 times [2022-02-10 22:45:26,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:26,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407972777] [2022-02-10 22:45:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:26,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:26,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407972777] [2022-02-10 22:45:26,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407972777] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:26,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113078666] [2022-02-10 22:45:26,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:45:26,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:26,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:26,752 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) [2022-02-10 22:45:26,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 22:45:26,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:45:26,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:26,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:26,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:26,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:27,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113078666] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:27,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:27,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:27,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172487197] [2022-02-10 22:45:27,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:27,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:27,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:27,091 INFO L87 Difference]: Start difference. First operand 15332 states and 44076 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:28,590 INFO L93 Difference]: Finished difference Result 22691 states and 64784 transitions. [2022-02-10 22:45:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-10 22:45:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:28,640 INFO L225 Difference]: With dead ends: 22691 [2022-02-10 22:45:28,640 INFO L226 Difference]: Without dead ends: 22511 [2022-02-10 22:45:28,640 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 22:45:28,641 INFO L934 BasicCegarLoop]: 185 mSDtfsCounter, 612 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:28,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1426 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:45:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22511 states. [2022-02-10 22:45:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22511 to 15528. [2022-02-10 22:45:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15528 states, 15527 states have (on average 2.872093772138855) internal successors, (44595), 15527 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 44595 transitions. [2022-02-10 22:45:28,966 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 44595 transitions. Word has length 75 [2022-02-10 22:45:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:28,966 INFO L470 AbstractCegarLoop]: Abstraction has 15528 states and 44595 transitions. [2022-02-10 22:45:28,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 44595 transitions. [2022-02-10 22:45:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:28,987 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:28,987 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:29,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:29,187 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 [2022-02-10 22:45:29,187 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1062708802, now seen corresponding path program 39 times [2022-02-10 22:45:29,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:29,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415057987] [2022-02-10 22:45:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:29,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:29,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415057987] [2022-02-10 22:45:29,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415057987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:29,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040032239] [2022-02-10 22:45:29,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:45:29,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:29,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:29,277 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) [2022-02-10 22:45:29,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 22:45:29,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:45:29,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:29,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:29,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:29,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:29,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040032239] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:29,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:29,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:29,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587900816] [2022-02-10 22:45:29,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:29,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:29,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:29,692 INFO L87 Difference]: Start difference. First operand 15528 states and 44595 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:31,425 INFO L93 Difference]: Finished difference Result 20081 states and 57112 transitions. [2022-02-10 22:45:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-10 22:45:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:31,462 INFO L225 Difference]: With dead ends: 20081 [2022-02-10 22:45:31,462 INFO L226 Difference]: Without dead ends: 20033 [2022-02-10 22:45:31,463 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1165, Invalid=6667, Unknown=0, NotChecked=0, Total=7832 [2022-02-10 22:45:31,463 INFO L934 BasicCegarLoop]: 163 mSDtfsCounter, 534 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:31,463 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1527 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:45:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2022-02-10 22:45:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 16404. [2022-02-10 22:45:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16404 states, 16403 states have (on average 2.8733768213131743) internal successors, (47132), 16403 states have internal predecessors, (47132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16404 states to 16404 states and 47132 transitions. [2022-02-10 22:45:31,850 INFO L78 Accepts]: Start accepts. Automaton has 16404 states and 47132 transitions. Word has length 75 [2022-02-10 22:45:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:31,850 INFO L470 AbstractCegarLoop]: Abstraction has 16404 states and 47132 transitions. [2022-02-10 22:45:31,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 16404 states and 47132 transitions. [2022-02-10 22:45:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:31,872 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:31,873 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:31,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:32,073 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 [2022-02-10 22:45:32,073 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1041991416, now seen corresponding path program 40 times [2022-02-10 22:45:32,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:32,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802857833] [2022-02-10 22:45:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:32,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:32,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802857833] [2022-02-10 22:45:32,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802857833] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:32,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587707156] [2022-02-10 22:45:32,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:45:32,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:32,160 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) [2022-02-10 22:45:32,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 22:45:32,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:45:32,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:32,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:32,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:32,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:32,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587707156] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:32,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:32,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:32,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609342726] [2022-02-10 22:45:32,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:32,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:32,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:32,509 INFO L87 Difference]: Start difference. First operand 16404 states and 47132 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:35,686 INFO L93 Difference]: Finished difference Result 22690 states and 64575 transitions. [2022-02-10 22:45:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-10 22:45:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:35,733 INFO L225 Difference]: With dead ends: 22690 [2022-02-10 22:45:35,733 INFO L226 Difference]: Without dead ends: 22630 [2022-02-10 22:45:35,735 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2158, Invalid=10052, Unknown=0, NotChecked=0, Total=12210 [2022-02-10 22:45:35,735 INFO L934 BasicCegarLoop]: 164 mSDtfsCounter, 790 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:35,735 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 1957 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:45:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22630 states. [2022-02-10 22:45:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22630 to 17120. [2022-02-10 22:45:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17120 states, 17119 states have (on average 2.8759273322039838) internal successors, (49233), 17119 states have internal predecessors, (49233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 49233 transitions. [2022-02-10 22:45:36,122 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 49233 transitions. Word has length 75 [2022-02-10 22:45:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:36,122 INFO L470 AbstractCegarLoop]: Abstraction has 17120 states and 49233 transitions. [2022-02-10 22:45:36,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 49233 transitions. [2022-02-10 22:45:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:36,147 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:36,147 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:36,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:36,348 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 [2022-02-10 22:45:36,348 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1440220374, now seen corresponding path program 41 times [2022-02-10 22:45:36,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:36,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455950018] [2022-02-10 22:45:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:36,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:36,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:36,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455950018] [2022-02-10 22:45:36,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455950018] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:36,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707518753] [2022-02-10 22:45:36,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:45:36,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:36,423 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) [2022-02-10 22:45:36,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 22:45:36,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:45:36,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:36,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:36,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707518753] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:36,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:36,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:36,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313924773] [2022-02-10 22:45:36,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:36,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:36,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:36,761 INFO L87 Difference]: Start difference. First operand 17120 states and 49233 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:38,803 INFO L93 Difference]: Finished difference Result 22004 states and 62810 transitions. [2022-02-10 22:45:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-10 22:45:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:38,844 INFO L225 Difference]: With dead ends: 22004 [2022-02-10 22:45:38,845 INFO L226 Difference]: Without dead ends: 21899 [2022-02-10 22:45:38,845 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1247, Invalid=6409, Unknown=0, NotChecked=0, Total=7656 [2022-02-10 22:45:38,846 INFO L934 BasicCegarLoop]: 160 mSDtfsCounter, 548 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:38,846 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1591 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:45:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2022-02-10 22:45:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 17596. [2022-02-10 22:45:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17596 states, 17595 states have (on average 2.8738846263142936) internal successors, (50566), 17595 states have internal predecessors, (50566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17596 states to 17596 states and 50566 transitions. [2022-02-10 22:45:39,188 INFO L78 Accepts]: Start accepts. Automaton has 17596 states and 50566 transitions. Word has length 75 [2022-02-10 22:45:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:39,188 INFO L470 AbstractCegarLoop]: Abstraction has 17596 states and 50566 transitions. [2022-02-10 22:45:39,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 17596 states and 50566 transitions. [2022-02-10 22:45:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:39,215 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:39,215 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:39,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:39,415 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 [2022-02-10 22:45:39,415 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1447491872, now seen corresponding path program 42 times [2022-02-10 22:45:39,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:39,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769508979] [2022-02-10 22:45:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:39,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:39,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:39,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769508979] [2022-02-10 22:45:39,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769508979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:39,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053905903] [2022-02-10 22:45:39,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:45:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:39,498 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) [2022-02-10 22:45:39,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 22:45:39,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:45:39,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:39,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:39,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:39,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053905903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:39,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:39,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:39,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913839173] [2022-02-10 22:45:39,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:39,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:39,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:39,900 INFO L87 Difference]: Start difference. First operand 17596 states and 50566 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:41,319 INFO L93 Difference]: Finished difference Result 20505 states and 58358 transitions. [2022-02-10 22:45:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 22:45:41,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:41,358 INFO L225 Difference]: With dead ends: 20505 [2022-02-10 22:45:41,358 INFO L226 Difference]: Without dead ends: 20457 [2022-02-10 22:45:41,359 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=734, Invalid=3298, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 22:45:41,359 INFO L934 BasicCegarLoop]: 148 mSDtfsCounter, 437 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:41,359 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1423 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:45:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20457 states. [2022-02-10 22:45:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20457 to 18060. [2022-02-10 22:45:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18059 states have (on average 2.874024032338446) internal successors, (51902), 18059 states have internal predecessors, (51902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 51902 transitions. [2022-02-10 22:45:41,716 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 51902 transitions. Word has length 75 [2022-02-10 22:45:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:41,716 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 51902 transitions. [2022-02-10 22:45:41,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 51902 transitions. [2022-02-10 22:45:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:41,742 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:41,743 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:41,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:41,943 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 [2022-02-10 22:45:41,943 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1468209258, now seen corresponding path program 43 times [2022-02-10 22:45:41,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:41,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579968085] [2022-02-10 22:45:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:42,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:42,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579968085] [2022-02-10 22:45:42,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579968085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:42,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130552010] [2022-02-10 22:45:42,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:45:42,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:42,078 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) [2022-02-10 22:45:42,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 22:45:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:42,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:42,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:42,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:42,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130552010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:42,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:42,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:42,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903494951] [2022-02-10 22:45:42,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:42,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:42,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:42,449 INFO L87 Difference]: Start difference. First operand 18060 states and 51902 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:43,696 INFO L93 Difference]: Finished difference Result 21387 states and 60825 transitions. [2022-02-10 22:45:43,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 22:45:43,696 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:43,736 INFO L225 Difference]: With dead ends: 21387 [2022-02-10 22:45:43,737 INFO L226 Difference]: Without dead ends: 21327 [2022-02-10 22:45:43,737 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=645, Invalid=2325, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 22:45:43,737 INFO L934 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:43,738 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1489 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:45:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21327 states. [2022-02-10 22:45:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21327 to 18008. [2022-02-10 22:45:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18008 states, 18007 states have (on average 2.8728272338535015) internal successors, (51731), 18007 states have internal predecessors, (51731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18008 states to 18008 states and 51731 transitions. [2022-02-10 22:45:44,198 INFO L78 Accepts]: Start accepts. Automaton has 18008 states and 51731 transitions. Word has length 75 [2022-02-10 22:45:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:44,198 INFO L470 AbstractCegarLoop]: Abstraction has 18008 states and 51731 transitions. [2022-02-10 22:45:44,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 18008 states and 51731 transitions. [2022-02-10 22:45:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:44,225 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:44,226 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:44,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:44,426 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 [2022-02-10 22:45:44,426 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1149797152, now seen corresponding path program 44 times [2022-02-10 22:45:44,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:44,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113004871] [2022-02-10 22:45:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:44,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:44,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113004871] [2022-02-10 22:45:44,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113004871] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:44,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452276024] [2022-02-10 22:45:44,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:45:44,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:44,532 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) [2022-02-10 22:45:44,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 22:45:44,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:45:44,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:44,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:44,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:44,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:44,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452276024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:44,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:44,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:45:44,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859812890] [2022-02-10 22:45:44,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:44,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:45:44,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:45:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:45:44,941 INFO L87 Difference]: Start difference. First operand 18008 states and 51731 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:45,658 INFO L93 Difference]: Finished difference Result 18902 states and 54100 transitions. [2022-02-10 22:45:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 22:45:45,659 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:45,692 INFO L225 Difference]: With dead ends: 18902 [2022-02-10 22:45:45,693 INFO L226 Difference]: Without dead ends: 18830 [2022-02-10 22:45:45,693 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:45:45,693 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 240 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:45,693 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1431 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:45:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states. [2022-02-10 22:45:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 18028. [2022-02-10 22:45:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 2.872469074166528) internal successors, (51782), 18027 states have internal predecessors, (51782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 51782 transitions. [2022-02-10 22:45:46,090 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 51782 transitions. Word has length 75 [2022-02-10 22:45:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:46,091 INFO L470 AbstractCegarLoop]: Abstraction has 18028 states and 51782 transitions. [2022-02-10 22:45:46,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 51782 transitions. [2022-02-10 22:45:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:46,119 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:46,119 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:46,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:46,320 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 [2022-02-10 22:45:46,321 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1333578238, now seen corresponding path program 45 times [2022-02-10 22:45:46,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:46,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229954506] [2022-02-10 22:45:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:46,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:46,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229954506] [2022-02-10 22:45:46,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229954506] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:46,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012224397] [2022-02-10 22:45:46,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:45:46,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:46,408 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) [2022-02-10 22:45:46,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 22:45:46,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:45:46,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:46,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:46,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:46,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:46,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012224397] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:46,796 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:46,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:46,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162762434] [2022-02-10 22:45:46,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:46,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:46,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:46,797 INFO L87 Difference]: Start difference. First operand 18028 states and 51782 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:48,435 INFO L93 Difference]: Finished difference Result 22013 states and 62717 transitions. [2022-02-10 22:45:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-10 22:45:48,435 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:48,487 INFO L225 Difference]: With dead ends: 22013 [2022-02-10 22:45:48,487 INFO L226 Difference]: Without dead ends: 21965 [2022-02-10 22:45:48,488 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=4911, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 22:45:48,488 INFO L934 BasicCegarLoop]: 161 mSDtfsCounter, 486 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:48,488 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1242 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:45:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21965 states. [2022-02-10 22:45:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21965 to 18656. [2022-02-10 22:45:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18656 states, 18655 states have (on average 2.874135620477084) internal successors, (53617), 18655 states have internal predecessors, (53617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18656 states to 18656 states and 53617 transitions. [2022-02-10 22:45:49,025 INFO L78 Accepts]: Start accepts. Automaton has 18656 states and 53617 transitions. Word has length 75 [2022-02-10 22:45:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:49,025 INFO L470 AbstractCegarLoop]: Abstraction has 18656 states and 53617 transitions. [2022-02-10 22:45:49,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 18656 states and 53617 transitions. [2022-02-10 22:45:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:49,055 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:49,055 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:49,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:49,255 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 [2022-02-10 22:45:49,256 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1312860852, now seen corresponding path program 46 times [2022-02-10 22:45:49,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:49,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001793395] [2022-02-10 22:45:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:49,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:49,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:49,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001793395] [2022-02-10 22:45:49,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001793395] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:49,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250526414] [2022-02-10 22:45:49,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:45:49,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:49,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:49,356 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) [2022-02-10 22:45:49,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 22:45:49,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:45:49,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:49,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:49,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:49,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:49,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250526414] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:49,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:49,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:49,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087614426] [2022-02-10 22:45:49,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:49,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:49,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:49,703 INFO L87 Difference]: Start difference. First operand 18656 states and 53617 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:52,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:52,705 INFO L93 Difference]: Finished difference Result 23691 states and 67298 transitions. [2022-02-10 22:45:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-10 22:45:52,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:52,753 INFO L225 Difference]: With dead ends: 23691 [2022-02-10 22:45:52,753 INFO L226 Difference]: Without dead ends: 23631 [2022-02-10 22:45:52,754 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4120 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1898, Invalid=9444, Unknown=0, NotChecked=0, Total=11342 [2022-02-10 22:45:52,755 INFO L934 BasicCegarLoop]: 168 mSDtfsCounter, 674 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:52,755 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 2050 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:45:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23631 states. [2022-02-10 22:45:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23631 to 18820. [2022-02-10 22:45:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 18819 states have (on average 2.874966788883575) internal successors, (54104), 18819 states have internal predecessors, (54104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 54104 transitions. [2022-02-10 22:45:53,184 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 54104 transitions. Word has length 75 [2022-02-10 22:45:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:53,185 INFO L470 AbstractCegarLoop]: Abstraction has 18820 states and 54104 transitions. [2022-02-10 22:45:53,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 54104 transitions. [2022-02-10 22:45:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:53,212 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:53,212 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:53,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-10 22:45:53,412 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 [2022-02-10 22:45:53,413 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1711089810, now seen corresponding path program 47 times [2022-02-10 22:45:53,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:53,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443517468] [2022-02-10 22:45:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:53,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:53,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443517468] [2022-02-10 22:45:53,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443517468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:53,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440057713] [2022-02-10 22:45:53,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:45:53,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:53,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:53,487 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) [2022-02-10 22:45:53,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 22:45:53,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:45:53,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:53,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:53,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:53,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:53,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440057713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:53,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:53,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:53,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161968691] [2022-02-10 22:45:53,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:53,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:53,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:53,846 INFO L87 Difference]: Start difference. First operand 18820 states and 54104 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:55,753 INFO L93 Difference]: Finished difference Result 22773 states and 65043 transitions. [2022-02-10 22:45:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-10 22:45:55,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:55,795 INFO L225 Difference]: With dead ends: 22773 [2022-02-10 22:45:55,796 INFO L226 Difference]: Without dead ends: 22668 [2022-02-10 22:45:55,797 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 22:45:55,797 INFO L934 BasicCegarLoop]: 161 mSDtfsCounter, 449 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:55,797 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1645 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 22:45:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22668 states. [2022-02-10 22:45:56,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22668 to 19184. [2022-02-10 22:45:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19184 states, 19183 states have (on average 2.8723870093311787) internal successors, (55101), 19183 states have internal predecessors, (55101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19184 states to 19184 states and 55101 transitions. [2022-02-10 22:45:56,255 INFO L78 Accepts]: Start accepts. Automaton has 19184 states and 55101 transitions. Word has length 75 [2022-02-10 22:45:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:56,255 INFO L470 AbstractCegarLoop]: Abstraction has 19184 states and 55101 transitions. [2022-02-10 22:45:56,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19184 states and 55101 transitions. [2022-02-10 22:45:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:56,281 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:56,281 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:56,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 22:45:56,482 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 [2022-02-10 22:45:56,482 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1176622436, now seen corresponding path program 48 times [2022-02-10 22:45:56,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:56,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368071607] [2022-02-10 22:45:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:56,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:56,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368071607] [2022-02-10 22:45:56,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368071607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:56,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765687049] [2022-02-10 22:45:56,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:45:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:56,660 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) [2022-02-10 22:45:56,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 22:45:56,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:45:56,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:45:56,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:56,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:57,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765687049] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:57,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:57,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:45:57,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121179284] [2022-02-10 22:45:57,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:57,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:45:57,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:57,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:45:57,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:45:57,061 INFO L87 Difference]: Start difference. First operand 19184 states and 55101 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:45:58,209 INFO L93 Difference]: Finished difference Result 22162 states and 63098 transitions. [2022-02-10 22:45:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-10 22:45:58,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 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 75 [2022-02-10 22:45:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:45:58,250 INFO L225 Difference]: With dead ends: 22162 [2022-02-10 22:45:58,250 INFO L226 Difference]: Without dead ends: 22114 [2022-02-10 22:45:58,251 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=605, Invalid=2935, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 22:45:58,251 INFO L934 BasicCegarLoop]: 138 mSDtfsCounter, 457 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:45:58,252 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1475 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:45:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22114 states. [2022-02-10 22:45:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22114 to 19912. [2022-02-10 22:45:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19912 states, 19911 states have (on average 2.8705238310481644) internal successors, (57155), 19911 states have internal predecessors, (57155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19912 states to 19912 states and 57155 transitions. [2022-02-10 22:45:58,625 INFO L78 Accepts]: Start accepts. Automaton has 19912 states and 57155 transitions. Word has length 75 [2022-02-10 22:45:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:45:58,626 INFO L470 AbstractCegarLoop]: Abstraction has 19912 states and 57155 transitions. [2022-02-10 22:45:58,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:45:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 19912 states and 57155 transitions. [2022-02-10 22:45:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:45:58,655 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:45:58,655 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:45:58,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-10 22:45:58,856 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 [2022-02-10 22:45:58,856 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:45:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:45:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1197339822, now seen corresponding path program 49 times [2022-02-10 22:45:58,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:45:58,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835436316] [2022-02-10 22:45:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:45:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:45:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:58,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:45:58,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835436316] [2022-02-10 22:45:58,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835436316] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:45:58,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803817332] [2022-02-10 22:45:58,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:45:58,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:45:58,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:45:58,994 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) [2022-02-10 22:45:58,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 22:45:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:45:59,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:45:59,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:45:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:59,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:45:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:45:59,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803817332] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:45:59,358 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:45:59,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:45:59,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758973097] [2022-02-10 22:45:59,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:45:59,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:45:59,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:45:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:45:59,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:45:59,359 INFO L87 Difference]: Start difference. First operand 19912 states and 57155 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:00,843 INFO L93 Difference]: Finished difference Result 24111 states and 68592 transitions. [2022-02-10 22:46:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 22:46:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:46:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:00,893 INFO L225 Difference]: With dead ends: 24111 [2022-02-10 22:46:00,893 INFO L226 Difference]: Without dead ends: 24051 [2022-02-10 22:46:00,894 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=805, Invalid=3485, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 22:46:00,894 INFO L934 BasicCegarLoop]: 154 mSDtfsCounter, 446 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:00,895 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1896 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:46:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24051 states. [2022-02-10 22:46:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24051 to 20240. [2022-02-10 22:46:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20240 states, 20239 states have (on average 2.870151687336331) internal successors, (58089), 20239 states have internal predecessors, (58089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20240 states to 20240 states and 58089 transitions. [2022-02-10 22:46:01,326 INFO L78 Accepts]: Start accepts. Automaton has 20240 states and 58089 transitions. Word has length 75 [2022-02-10 22:46:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:01,327 INFO L470 AbstractCegarLoop]: Abstraction has 20240 states and 58089 transitions. [2022-02-10 22:46:01,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20240 states and 58089 transitions. [2022-02-10 22:46:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:46:01,355 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:01,355 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:46:01,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:01,556 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 [2022-02-10 22:46:01,556 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash 878927716, now seen corresponding path program 50 times [2022-02-10 22:46:01,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:01,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222859649] [2022-02-10 22:46:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:01,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:01,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:01,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222859649] [2022-02-10 22:46:01,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222859649] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:01,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122882685] [2022-02-10 22:46:01,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:46:01,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:01,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:01,705 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) [2022-02-10 22:46:01,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 22:46:01,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:46:01,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:01,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:46:01,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:01,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:02,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122882685] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:02,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:02,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:46:02,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44535222] [2022-02-10 22:46:02,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:02,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:46:02,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:46:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:46:02,113 INFO L87 Difference]: Start difference. First operand 20240 states and 58089 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:02,877 INFO L93 Difference]: Finished difference Result 21080 states and 60318 transitions. [2022-02-10 22:46:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 22:46:02,878 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:46:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:02,921 INFO L225 Difference]: With dead ends: 21080 [2022-02-10 22:46:02,921 INFO L226 Difference]: Without dead ends: 21008 [2022-02-10 22:46:02,921 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:46:02,921 INFO L934 BasicCegarLoop]: 136 mSDtfsCounter, 288 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:02,922 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1358 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:46:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21008 states. [2022-02-10 22:46:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21008 to 20256. [2022-02-10 22:46:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20256 states, 20255 states have (on average 2.8698592940014813) internal successors, (58129), 20255 states have internal predecessors, (58129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20256 states to 20256 states and 58129 transitions. [2022-02-10 22:46:03,308 INFO L78 Accepts]: Start accepts. Automaton has 20256 states and 58129 transitions. Word has length 75 [2022-02-10 22:46:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:03,308 INFO L470 AbstractCegarLoop]: Abstraction has 20256 states and 58129 transitions. [2022-02-10 22:46:03,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 20256 states and 58129 transitions. [2022-02-10 22:46:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:46:03,336 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:03,336 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:46:03,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:03,536 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 [2022-02-10 22:46:03,536 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash 681668142, now seen corresponding path program 51 times [2022-02-10 22:46:03,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:03,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857811077] [2022-02-10 22:46:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:03,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:03,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:03,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857811077] [2022-02-10 22:46:03,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857811077] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:03,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729698950] [2022-02-10 22:46:03,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:46:03,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:03,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:03,621 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) [2022-02-10 22:46:03,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 22:46:03,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:46:03,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:03,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:46:03,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:03,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:03,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729698950] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:03,983 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:03,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-10 22:46:03,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839889496] [2022-02-10 22:46:03,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:03,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:46:03,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:03,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:46:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:46:03,984 INFO L87 Difference]: Start difference. First operand 20256 states and 58129 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:05,557 INFO L93 Difference]: Finished difference Result 25665 states and 73225 transitions. [2022-02-10 22:46:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 22:46:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 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 75 [2022-02-10 22:46:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:05,643 INFO L225 Difference]: With dead ends: 25665 [2022-02-10 22:46:05,643 INFO L226 Difference]: Without dead ends: 25617 [2022-02-10 22:46:05,644 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2766, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 22:46:05,644 INFO L934 BasicCegarLoop]: 135 mSDtfsCounter, 465 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:05,644 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1548 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:46:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25617 states. [2022-02-10 22:46:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25617 to 22132. [2022-02-10 22:46:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22132 states, 22131 states have (on average 2.8727124847498984) internal successors, (63576), 22131 states have internal predecessors, (63576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 63576 transitions. [2022-02-10 22:46:06,087 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 63576 transitions. Word has length 75 [2022-02-10 22:46:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:06,087 INFO L470 AbstractCegarLoop]: Abstraction has 22132 states and 63576 transitions. [2022-02-10 22:46:06,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 63576 transitions. [2022-02-10 22:46:06,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:46:06,118 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:06,118 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:46:06,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-10 22:46:06,318 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 [2022-02-10 22:46:06,319 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash 702385528, now seen corresponding path program 52 times [2022-02-10 22:46:06,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:06,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013161866] [2022-02-10 22:46:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:06,410 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:06,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013161866] [2022-02-10 22:46:06,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013161866] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:06,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435662164] [2022-02-10 22:46:06,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:46:06,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:06,411 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) [2022-02-10 22:46:06,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 22:46:06,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:46:06,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:06,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:46:06,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:06,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:06,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435662164] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:06,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:06,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-10 22:46:06,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517410296] [2022-02-10 22:46:06,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:06,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-10 22:46:06,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-10 22:46:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-02-10 22:46:06,773 INFO L87 Difference]: Start difference. First operand 22132 states and 63576 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:08,079 INFO L93 Difference]: Finished difference Result 25750 states and 73381 transitions. [2022-02-10 22:46:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 22:46:08,079 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 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 75 [2022-02-10 22:46:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:08,137 INFO L225 Difference]: With dead ends: 25750 [2022-02-10 22:46:08,137 INFO L226 Difference]: Without dead ends: 25690 [2022-02-10 22:46:08,138 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=707, Invalid=2833, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 22:46:08,138 INFO L934 BasicCegarLoop]: 151 mSDtfsCounter, 618 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:08,138 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1390 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 22:46:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25690 states. [2022-02-10 22:46:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25690 to 21240. [2022-02-10 22:46:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-02-10 22:46:08,564 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-02-10 22:46:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:08,564 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-02-10 22:46:08,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-02-10 22:46:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:46:08,593 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:08,593 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:46:08,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:08,794 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 [2022-02-10 22:46:08,794 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 383973422, now seen corresponding path program 53 times [2022-02-10 22:46:08,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:08,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041072751] [2022-02-10 22:46:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:08,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:08,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041072751] [2022-02-10 22:46:08,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041072751] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:08,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937174070] [2022-02-10 22:46:08,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:46:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:08,887 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) [2022-02-10 22:46:08,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 22:46:08,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:46:08,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:08,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:46:08,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:09,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:09,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937174070] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:09,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:09,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 22:46:09,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189961356] [2022-02-10 22:46:09,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:09,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 22:46:09,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 22:46:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-02-10 22:46:09,284 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:10,107 INFO L93 Difference]: Finished difference Result 22388 states and 63935 transitions. [2022-02-10 22:46:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 22:46:10,108 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 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 75 [2022-02-10 22:46:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:10,152 INFO L225 Difference]: With dead ends: 22388 [2022-02-10 22:46:10,152 INFO L226 Difference]: Without dead ends: 22316 [2022-02-10 22:46:10,152 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=339, Invalid=1553, Unknown=0, NotChecked=0, Total=1892 [2022-02-10 22:46:10,152 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 331 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:10,152 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1369 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 22:46:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2022-02-10 22:46:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 21248. [2022-02-10 22:46:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21248 states, 21247 states have (on average 2.8691579987762976) internal successors, (60961), 21247 states have internal predecessors, (60961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 60961 transitions. [2022-02-10 22:46:10,566 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 60961 transitions. Word has length 75 [2022-02-10 22:46:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:10,566 INFO L470 AbstractCegarLoop]: Abstraction has 21248 states and 60961 transitions. [2022-02-10 22:46:10,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:10,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 60961 transitions. [2022-02-10 22:46:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:46:10,596 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:10,597 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:46:10,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:10,797 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 [2022-02-10 22:46:10,797 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:10,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 617413212, now seen corresponding path program 54 times [2022-02-10 22:46:10,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:10,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915142462] [2022-02-10 22:46:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:10,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:10,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:10,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915142462] [2022-02-10 22:46:10,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915142462] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:10,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543778236] [2022-02-10 22:46:10,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:46:10,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:10,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:10,873 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) [2022-02-10 22:46:10,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 22:46:10,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:46:10,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:10,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-10 22:46:10,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:11,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:11,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543778236] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:11,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:11,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-10 22:46:11,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436231561] [2022-02-10 22:46:11,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:11,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:46:11,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:46:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:46:11,235 INFO L87 Difference]: Start difference. First operand 21248 states and 60961 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:11,652 INFO L93 Difference]: Finished difference Result 21972 states and 62883 transitions. [2022-02-10 22:46:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:46:11,652 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 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 75 [2022-02-10 22:46:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:11,772 INFO L225 Difference]: With dead ends: 21972 [2022-02-10 22:46:11,772 INFO L226 Difference]: Without dead ends: 21924 [2022-02-10 22:46:11,772 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-02-10 22:46:11,773 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 242 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:11,773 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1122 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:46:11,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2022-02-10 22:46:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 21240. [2022-02-10 22:46:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-02-10 22:46:12,134 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-02-10 22:46:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:12,134 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-02-10 22:46:12,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-02-10 22:46:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-10 22:46:12,168 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:12,168 INFO L515 BasicCegarLoop]: trace histogram [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] [2022-02-10 22:46:12,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:12,368 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 [2022-02-10 22:46:12,369 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash 710815400, now seen corresponding path program 55 times [2022-02-10 22:46:12,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:12,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371202533] [2022-02-10 22:46:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:12,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 22:46:12,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:12,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371202533] [2022-02-10 22:46:12,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371202533] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:12,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952768788] [2022-02-10 22:46:12,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:46:12,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:12,432 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) [2022-02-10 22:46:12,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 22:46:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:12,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 22:46:12,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:46:12,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 22:46:12,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952768788] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:12,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:12,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-02-10 22:46:12,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504728701] [2022-02-10 22:46:12,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:12,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 22:46:12,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 22:46:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-10 22:46:12,798 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:13,035 INFO L93 Difference]: Finished difference Result 35624 states and 103549 transitions. [2022-02-10 22:46:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:46:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 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 80 [2022-02-10 22:46:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:13,113 INFO L225 Difference]: With dead ends: 35624 [2022-02-10 22:46:13,113 INFO L226 Difference]: Without dead ends: 35321 [2022-02-10 22:46:13,113 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 22:46:13,114 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 125 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:13,114 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 828 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:46:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35321 states. [2022-02-10 22:46:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35321 to 29881. [2022-02-10 22:46:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29881 states, 29880 states have (on average 2.897657295850067) internal successors, (86582), 29880 states have internal predecessors, (86582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29881 states to 29881 states and 86582 transitions. [2022-02-10 22:46:14,010 INFO L78 Accepts]: Start accepts. Automaton has 29881 states and 86582 transitions. Word has length 80 [2022-02-10 22:46:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:14,011 INFO L470 AbstractCegarLoop]: Abstraction has 29881 states and 86582 transitions. [2022-02-10 22:46:14,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:14,011 INFO L276 IsEmpty]: Start isEmpty. Operand 29881 states and 86582 transitions. [2022-02-10 22:46:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:46:14,061 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:14,061 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:46:14,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:14,261 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 [2022-02-10 22:46:14,262 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash -58756830, now seen corresponding path program 56 times [2022-02-10 22:46:14,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:14,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868871469] [2022-02-10 22:46:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:14,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:14,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868871469] [2022-02-10 22:46:14,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868871469] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:14,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600040314] [2022-02-10 22:46:14,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:46:14,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:14,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:14,472 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:46:14,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 22:46:14,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:46:14,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:14,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:46:14,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:14,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:15,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600040314] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:15,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:15,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:46:15,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596724462] [2022-02-10 22:46:15,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:15,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:46:15,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:46:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:46:15,150 INFO L87 Difference]: Start difference. First operand 29881 states and 86582 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:28,500 INFO L93 Difference]: Finished difference Result 45744 states and 130515 transitions. [2022-02-10 22:46:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-02-10 22:46:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:46:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:28,603 INFO L225 Difference]: With dead ends: 45744 [2022-02-10 22:46:28,603 INFO L226 Difference]: Without dead ends: 45174 [2022-02-10 22:46:28,605 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13480 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4705, Invalid=30827, Unknown=0, NotChecked=0, Total=35532 [2022-02-10 22:46:28,605 INFO L934 BasicCegarLoop]: 226 mSDtfsCounter, 2400 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:28,605 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 4290 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-10 22:46:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45174 states. [2022-02-10 22:46:29,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45174 to 32125. [2022-02-10 22:46:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32125 states, 32124 states have (on average 2.8950628813348276) internal successors, (93001), 32124 states have internal predecessors, (93001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32125 states to 32125 states and 93001 transitions. [2022-02-10 22:46:29,365 INFO L78 Accepts]: Start accepts. Automaton has 32125 states and 93001 transitions. Word has length 85 [2022-02-10 22:46:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:29,365 INFO L470 AbstractCegarLoop]: Abstraction has 32125 states and 93001 transitions. [2022-02-10 22:46:29,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 32125 states and 93001 transitions. [2022-02-10 22:46:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:46:29,418 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:29,418 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:46:29,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-10 22:46:29,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:29,619 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash -101477990, now seen corresponding path program 57 times [2022-02-10 22:46:29,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:29,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906162572] [2022-02-10 22:46:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:29,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:29,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906162572] [2022-02-10 22:46:29,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906162572] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:29,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120187338] [2022-02-10 22:46:29,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:46:29,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:29,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:29,808 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:46:29,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 22:46:29,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:46:29,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:29,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:46:29,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:30,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:30,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120187338] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:30,744 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:30,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:46:30,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511347489] [2022-02-10 22:46:30,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:30,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:46:30,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:46:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:46:30,745 INFO L87 Difference]: Start difference. First operand 32125 states and 93001 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:46:49,059 INFO L93 Difference]: Finished difference Result 41564 states and 118888 transitions. [2022-02-10 22:46:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-02-10 22:46:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:46:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:46:49,159 INFO L225 Difference]: With dead ends: 41564 [2022-02-10 22:46:49,159 INFO L226 Difference]: Without dead ends: 41468 [2022-02-10 22:46:49,161 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10995 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=3772, Invalid=25640, Unknown=0, NotChecked=0, Total=29412 [2022-02-10 22:46:49,161 INFO L934 BasicCegarLoop]: 196 mSDtfsCounter, 1196 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:46:49,161 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 4204 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-10 22:46:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41468 states. [2022-02-10 22:46:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41468 to 34425. [2022-02-10 22:46:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34425 states, 34424 states have (on average 2.8923425517081105) internal successors, (99566), 34424 states have internal predecessors, (99566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34425 states to 34425 states and 99566 transitions. [2022-02-10 22:46:50,087 INFO L78 Accepts]: Start accepts. Automaton has 34425 states and 99566 transitions. Word has length 85 [2022-02-10 22:46:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:46:50,087 INFO L470 AbstractCegarLoop]: Abstraction has 34425 states and 99566 transitions. [2022-02-10 22:46:50,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:46:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 34425 states and 99566 transitions. [2022-02-10 22:46:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:46:50,239 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:46:50,239 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:46:50,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-02-10 22:46:50,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 22:46:50,439 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:46:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:46:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -80760604, now seen corresponding path program 58 times [2022-02-10 22:46:50,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:46:50,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136973653] [2022-02-10 22:46:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:46:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:46:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:46:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:50,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:46:50,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136973653] [2022-02-10 22:46:50,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136973653] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:46:50,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039372023] [2022-02-10 22:46:50,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:46:50,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:46:50,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:46:50,665 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:46:50,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 22:46:50,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:46:50,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:46:50,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:46:50,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:46:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:50,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:46:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:46:51,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039372023] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:46:51,347 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:46:51,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:46:51,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978110191] [2022-02-10 22:46:51,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:46:51,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:46:51,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:46:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:46:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:46:51,348 INFO L87 Difference]: Start difference. First operand 34425 states and 99566 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:47:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:47:24,721 INFO L93 Difference]: Finished difference Result 48154 states and 137808 transitions. [2022-02-10 22:47:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-02-10 22:47:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:47:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:47:24,829 INFO L225 Difference]: With dead ends: 48154 [2022-02-10 22:47:24,829 INFO L226 Difference]: Without dead ends: 48064 [2022-02-10 22:47:24,832 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22015 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=7064, Invalid=47458, Unknown=0, NotChecked=0, Total=54522 [2022-02-10 22:47:24,832 INFO L934 BasicCegarLoop]: 224 mSDtfsCounter, 2138 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:47:24,833 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 4459 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-10 22:47:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48064 states. [2022-02-10 22:47:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48064 to 36521. [2022-02-10 22:47:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36521 states, 36520 states have (on average 2.894687842278204) internal successors, (105714), 36520 states have internal predecessors, (105714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:47:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36521 states to 36521 states and 105714 transitions. [2022-02-10 22:47:25,746 INFO L78 Accepts]: Start accepts. Automaton has 36521 states and 105714 transitions. Word has length 85 [2022-02-10 22:47:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:47:25,746 INFO L470 AbstractCegarLoop]: Abstraction has 36521 states and 105714 transitions. [2022-02-10 22:47:25,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:47:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36521 states and 105714 transitions. [2022-02-10 22:47:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:47:25,903 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:47:25,903 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:47:25,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-10 22:47:26,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 22:47:26,103 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:47:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:47:26,104 INFO L85 PathProgramCache]: Analyzing trace with hash -478989562, now seen corresponding path program 59 times [2022-02-10 22:47:26,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:47:26,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597025888] [2022-02-10 22:47:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:47:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:47:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:47:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:47:26,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:47:26,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597025888] [2022-02-10 22:47:26,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597025888] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:47:26,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073650365] [2022-02-10 22:47:26,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:47:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:47:26,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:47:26,293 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:47:26,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 22:47:26,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 22:47:26,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:47:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:47:26,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:47:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:47:26,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:47:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:47:27,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073650365] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:47:27,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:47:27,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:47:27,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031902105] [2022-02-10 22:47:27,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:47:27,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:47:27,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:47:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:47:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:47:27,016 INFO L87 Difference]: Start difference. First operand 36521 states and 105714 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:47:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:47:59,595 INFO L93 Difference]: Finished difference Result 50104 states and 143276 transitions. [2022-02-10 22:47:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-02-10 22:47:59,595 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:47:59,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:47:59,705 INFO L225 Difference]: With dead ends: 50104 [2022-02-10 22:47:59,705 INFO L226 Difference]: Without dead ends: 49879 [2022-02-10 22:47:59,707 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32669 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=8805, Invalid=69315, Unknown=0, NotChecked=0, Total=78120 [2022-02-10 22:47:59,708 INFO L934 BasicCegarLoop]: 227 mSDtfsCounter, 1859 mSDsluCounter, 5844 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:47:59,708 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 5658 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-10 22:47:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49879 states. [2022-02-10 22:48:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49879 to 37749. [2022-02-10 22:48:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37749 states, 37748 states have (on average 2.890722687294691) internal successors, (109119), 37748 states have internal predecessors, (109119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37749 states to 37749 states and 109119 transitions. [2022-02-10 22:48:00,604 INFO L78 Accepts]: Start accepts. Automaton has 37749 states and 109119 transitions. Word has length 85 [2022-02-10 22:48:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:48:00,604 INFO L470 AbstractCegarLoop]: Abstraction has 37749 states and 109119 transitions. [2022-02-10 22:48:00,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 37749 states and 109119 transitions. [2022-02-10 22:48:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:48:00,663 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:48:00,663 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:48:00,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-10 22:48:00,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-10 22:48:00,864 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:48:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:48:00,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1886244612, now seen corresponding path program 60 times [2022-02-10 22:48:00,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:48:00,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225900942] [2022-02-10 22:48:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:48:00,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:48:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:48:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:01,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:48:01,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225900942] [2022-02-10 22:48:01,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225900942] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:48:01,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073370027] [2022-02-10 22:48:01,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:48:01,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:01,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:48:01,060 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:48:01,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 22:48:01,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:48:01,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:48:01,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:48:01,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:48:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:01,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:48:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:01,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073370027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:48:01,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:48:01,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:48:01,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139726939] [2022-02-10 22:48:01,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:48:01,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:48:01,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:48:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:48:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:48:01,750 INFO L87 Difference]: Start difference. First operand 37749 states and 109119 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:48:18,635 INFO L93 Difference]: Finished difference Result 49124 states and 140439 transitions. [2022-02-10 22:48:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-10 22:48:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:48:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:48:18,736 INFO L225 Difference]: With dead ends: 49124 [2022-02-10 22:48:18,736 INFO L226 Difference]: Without dead ends: 49052 [2022-02-10 22:48:18,738 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=3353, Invalid=22407, Unknown=0, NotChecked=0, Total=25760 [2022-02-10 22:48:18,738 INFO L934 BasicCegarLoop]: 220 mSDtfsCounter, 1256 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:48:18,738 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 3868 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-10 22:48:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49052 states. [2022-02-10 22:48:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49052 to 40385. [2022-02-10 22:48:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40385 states, 40384 states have (on average 2.8884706814580032) internal successors, (116648), 40384 states have internal predecessors, (116648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 116648 transitions. [2022-02-10 22:48:19,613 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 116648 transitions. Word has length 85 [2022-02-10 22:48:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:48:19,614 INFO L470 AbstractCegarLoop]: Abstraction has 40385 states and 116648 transitions. [2022-02-10 22:48:19,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 116648 transitions. [2022-02-10 22:48:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:48:19,676 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:48:19,676 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:48:19,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-10 22:48:19,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:19,876 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:48:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:48:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1865527226, now seen corresponding path program 61 times [2022-02-10 22:48:19,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:48:19,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821502445] [2022-02-10 22:48:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:48:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:48:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:48:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:20,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:48:20,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821502445] [2022-02-10 22:48:20,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821502445] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:48:20,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124490444] [2022-02-10 22:48:20,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:48:20,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:20,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:48:20,059 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:48:20,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 22:48:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:48:20,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:48:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:48:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:20,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:48:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:20,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124490444] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:48:20,765 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:48:20,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:48:20,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139215009] [2022-02-10 22:48:20,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:48:20,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:48:20,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:48:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:48:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:48:20,766 INFO L87 Difference]: Start difference. First operand 40385 states and 116648 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:48:38,220 INFO L93 Difference]: Finished difference Result 53305 states and 152463 transitions. [2022-02-10 22:48:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-02-10 22:48:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:48:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:48:38,334 INFO L225 Difference]: With dead ends: 53305 [2022-02-10 22:48:38,334 INFO L226 Difference]: Without dead ends: 53215 [2022-02-10 22:48:38,335 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16013 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5318, Invalid=36502, Unknown=0, NotChecked=0, Total=41820 [2022-02-10 22:48:38,336 INFO L934 BasicCegarLoop]: 217 mSDtfsCounter, 1761 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:48:38,336 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 4210 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-10 22:48:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53215 states. [2022-02-10 22:48:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53215 to 41541. [2022-02-10 22:48:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41541 states, 41540 states have (on average 2.887987481945113) internal successors, (119967), 41540 states have internal predecessors, (119967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41541 states to 41541 states and 119967 transitions. [2022-02-10 22:48:39,358 INFO L78 Accepts]: Start accepts. Automaton has 41541 states and 119967 transitions. Word has length 85 [2022-02-10 22:48:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:48:39,358 INFO L470 AbstractCegarLoop]: Abstraction has 41541 states and 119967 transitions. [2022-02-10 22:48:39,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 41541 states and 119967 transitions. [2022-02-10 22:48:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:48:39,421 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:48:39,421 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:48:39,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-10 22:48:39,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:39,622 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:48:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:48:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2111027964, now seen corresponding path program 62 times [2022-02-10 22:48:39,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:48:39,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577980219] [2022-02-10 22:48:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:48:39,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:48:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:48:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:39,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:48:39,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577980219] [2022-02-10 22:48:39,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577980219] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:48:39,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735148729] [2022-02-10 22:48:39,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:48:39,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:48:39,928 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:48:39,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 22:48:40,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:48:40,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:48:40,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:48:40,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:48:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:40,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:48:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:40,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735148729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:48:40,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:48:40,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-02-10 22:48:40,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560580084] [2022-02-10 22:48:40,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:48:40,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:48:40,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:48:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:48:40,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:48:40,668 INFO L87 Difference]: Start difference. First operand 41541 states and 119967 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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) [2022-02-10 22:48:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:48:53,134 INFO L93 Difference]: Finished difference Result 44680 states and 128452 transitions. [2022-02-10 22:48:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-10 22:48:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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 85 [2022-02-10 22:48:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:48:53,238 INFO L225 Difference]: With dead ends: 44680 [2022-02-10 22:48:53,238 INFO L226 Difference]: Without dead ends: 44572 [2022-02-10 22:48:53,239 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6583 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2128, Invalid=16504, Unknown=0, NotChecked=0, Total=18632 [2022-02-10 22:48:53,239 INFO L934 BasicCegarLoop]: 176 mSDtfsCounter, 854 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:48:53,239 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 3173 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-10 22:48:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44572 states. [2022-02-10 22:48:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44572 to 41641. [2022-02-10 22:48:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41641 states, 41640 states have (on average 2.887367915465898) internal successors, (120230), 41640 states have internal predecessors, (120230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:48:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41641 states to 41641 states and 120230 transitions. [2022-02-10 22:48:54,071 INFO L78 Accepts]: Start accepts. Automaton has 41641 states and 120230 transitions. Word has length 85 [2022-02-10 22:48:54,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:48:54,071 INFO L470 AbstractCegarLoop]: Abstraction has 41641 states and 120230 transitions. [2022-02-10 22:48:54,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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) [2022-02-10 22:48:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 41641 states and 120230 transitions. [2022-02-10 22:48:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:48:54,135 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:48:54,135 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:48:54,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-10 22:48:54,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:54,342 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:48:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:48:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash -372347426, now seen corresponding path program 63 times [2022-02-10 22:48:54,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:48:54,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176690312] [2022-02-10 22:48:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:48:54,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:48:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:48:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:54,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:48:54,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176690312] [2022-02-10 22:48:54,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176690312] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:48:54,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684227460] [2022-02-10 22:48:54,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:48:54,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:48:54,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:48:54,517 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:48:54,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 22:48:54,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:48:54,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:48:54,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:48:54,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:48:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:54,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:48:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:48:55,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684227460] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:48:55,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:48:55,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:48:55,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671749205] [2022-02-10 22:48:55,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:48:55,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:48:55,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:48:55,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:48:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:48:55,372 INFO L87 Difference]: Start difference. First operand 41641 states and 120230 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:49:08,486 INFO L93 Difference]: Finished difference Result 49660 states and 142447 transitions. [2022-02-10 22:49:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-10 22:49:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:49:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:49:08,590 INFO L225 Difference]: With dead ends: 49660 [2022-02-10 22:49:08,590 INFO L226 Difference]: Without dead ends: 49540 [2022-02-10 22:49:08,591 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7130 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2555, Invalid=18037, Unknown=0, NotChecked=0, Total=20592 [2022-02-10 22:49:08,591 INFO L934 BasicCegarLoop]: 218 mSDtfsCounter, 1237 mSDsluCounter, 4768 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:49:08,591 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 4586 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-10 22:49:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49540 states. [2022-02-10 22:49:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49540 to 44153. [2022-02-10 22:49:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44153 states, 44152 states have (on average 2.8891556441384307) internal successors, (127562), 44152 states have internal predecessors, (127562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44153 states to 44153 states and 127562 transitions. [2022-02-10 22:49:09,586 INFO L78 Accepts]: Start accepts. Automaton has 44153 states and 127562 transitions. Word has length 85 [2022-02-10 22:49:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:49:09,586 INFO L470 AbstractCegarLoop]: Abstraction has 44153 states and 127562 transitions. [2022-02-10 22:49:09,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 44153 states and 127562 transitions. [2022-02-10 22:49:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:49:09,805 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:49:09,805 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:49:09,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-02-10 22:49:10,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-02-10 22:49:10,006 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:49:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:49:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash -351630040, now seen corresponding path program 64 times [2022-02-10 22:49:10,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:49:10,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180074173] [2022-02-10 22:49:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:49:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:49:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:49:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:10,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:49:10,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180074173] [2022-02-10 22:49:10,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180074173] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:49:10,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022991565] [2022-02-10 22:49:10,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:49:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:49:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:49:10,182 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:49:10,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 22:49:10,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:49:10,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:49:10,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:49:10,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:49:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:10,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:49:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:10,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022991565] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:49:10,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:49:10,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:49:10,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127750092] [2022-02-10 22:49:10,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:49:10,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:49:10,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:49:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:49:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:49:10,918 INFO L87 Difference]: Start difference. First operand 44153 states and 127562 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:49:35,889 INFO L93 Difference]: Finished difference Result 53685 states and 153583 transitions. [2022-02-10 22:49:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-02-10 22:49:35,889 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:49:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:49:36,072 INFO L225 Difference]: With dead ends: 53685 [2022-02-10 22:49:36,072 INFO L226 Difference]: Without dead ends: 53580 [2022-02-10 22:49:36,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16397 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=5127, Invalid=37515, Unknown=0, NotChecked=0, Total=42642 [2022-02-10 22:49:36,074 INFO L934 BasicCegarLoop]: 226 mSDtfsCounter, 1849 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:49:36,074 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 4920 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-10 22:49:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53580 states. [2022-02-10 22:49:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53580 to 43241. [2022-02-10 22:49:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43241 states, 43240 states have (on average 2.8871877890841815) internal successors, (124842), 43240 states have internal predecessors, (124842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43241 states to 43241 states and 124842 transitions. [2022-02-10 22:49:37,091 INFO L78 Accepts]: Start accepts. Automaton has 43241 states and 124842 transitions. Word has length 85 [2022-02-10 22:49:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:49:37,091 INFO L470 AbstractCegarLoop]: Abstraction has 43241 states and 124842 transitions. [2022-02-10 22:49:37,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:49:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 43241 states and 124842 transitions. [2022-02-10 22:49:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:49:37,160 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:49:37,160 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:49:37,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-10 22:49:37,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:49:37,361 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:49:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:49:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -749858998, now seen corresponding path program 65 times [2022-02-10 22:49:37,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:49:37,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991013922] [2022-02-10 22:49:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:49:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:49:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:49:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:37,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:49:37,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991013922] [2022-02-10 22:49:37,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991013922] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:49:37,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036135040] [2022-02-10 22:49:37,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:49:37,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:49:37,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:49:37,564 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:49:37,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 22:49:37,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 22:49:37,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:49:37,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:49:37,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:49:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:38,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:49:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:49:38,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036135040] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:49:38,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:49:38,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:49:38,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103868198] [2022-02-10 22:49:38,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:49:38,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:49:38,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:49:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:49:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:49:38,414 INFO L87 Difference]: Start difference. First operand 43241 states and 124842 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:50:03,932 INFO L93 Difference]: Finished difference Result 53446 states and 152839 transitions. [2022-02-10 22:50:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-02-10 22:50:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:50:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:50:04,048 INFO L225 Difference]: With dead ends: 53446 [2022-02-10 22:50:04,048 INFO L226 Difference]: Without dead ends: 53191 [2022-02-10 22:50:04,051 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23523 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=6453, Invalid=51869, Unknown=0, NotChecked=0, Total=58322 [2022-02-10 22:50:04,052 INFO L934 BasicCegarLoop]: 212 mSDtfsCounter, 1920 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:50:04,052 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1920 Valid, 4531 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-10 22:50:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53191 states. [2022-02-10 22:50:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53191 to 43337. [2022-02-10 22:50:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43337 states, 43336 states have (on average 2.885776259922466) internal successors, (125058), 43336 states have internal predecessors, (125058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43337 states to 43337 states and 125058 transitions. [2022-02-10 22:50:05,223 INFO L78 Accepts]: Start accepts. Automaton has 43337 states and 125058 transitions. Word has length 85 [2022-02-10 22:50:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:50:05,223 INFO L470 AbstractCegarLoop]: Abstraction has 43337 states and 125058 transitions. [2022-02-10 22:50:05,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 43337 states and 125058 transitions. [2022-02-10 22:50:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:50:05,429 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:50:05,429 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:50:05,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-10 22:50:05,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-10 22:50:05,640 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:50:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:50:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2137853248, now seen corresponding path program 66 times [2022-02-10 22:50:05,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:50:05,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96019945] [2022-02-10 22:50:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:50:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:50:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:05,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:50:05,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96019945] [2022-02-10 22:50:05,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96019945] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:50:05,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002768914] [2022-02-10 22:50:05,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:50:05,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:50:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:50:05,812 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:50:05,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 22:50:05,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:50:05,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:50:05,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:50:05,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:50:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:06,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:50:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:06,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002768914] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:50:06,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:50:06,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:50:06,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511113837] [2022-02-10 22:50:06,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:50:06,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:50:06,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:50:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:50:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:50:06,495 INFO L87 Difference]: Start difference. First operand 43337 states and 125058 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:50:25,487 INFO L93 Difference]: Finished difference Result 50227 states and 143883 transitions. [2022-02-10 22:50:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-02-10 22:50:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:50:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:50:25,591 INFO L225 Difference]: With dead ends: 50227 [2022-02-10 22:50:25,592 INFO L226 Difference]: Without dead ends: 50155 [2022-02-10 22:50:25,593 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9855 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=3346, Invalid=23714, Unknown=0, NotChecked=0, Total=27060 [2022-02-10 22:50:25,593 INFO L934 BasicCegarLoop]: 211 mSDtfsCounter, 1312 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:50:25,593 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3649 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-10 22:50:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50155 states. [2022-02-10 22:50:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50155 to 44785. [2022-02-10 22:50:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44785 states, 44784 states have (on average 2.8848695962843873) internal successors, (129196), 44784 states have internal predecessors, (129196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44785 states to 44785 states and 129196 transitions. [2022-02-10 22:50:26,598 INFO L78 Accepts]: Start accepts. Automaton has 44785 states and 129196 transitions. Word has length 85 [2022-02-10 22:50:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:50:26,598 INFO L470 AbstractCegarLoop]: Abstraction has 44785 states and 129196 transitions. [2022-02-10 22:50:26,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:50:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 44785 states and 129196 transitions. [2022-02-10 22:50:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:50:26,669 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:50:26,669 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:50:26,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 22:50:26,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-02-10 22:50:26,870 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:50:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:50:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2136396662, now seen corresponding path program 67 times [2022-02-10 22:50:26,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:50:26,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87889519] [2022-02-10 22:50:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:50:26,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:50:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:27,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:50:27,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87889519] [2022-02-10 22:50:27,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87889519] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:50:27,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188756085] [2022-02-10 22:50:27,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:50:27,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:50:27,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:50:27,044 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:50:27,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 22:50:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:50:27,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:50:27,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:50:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:27,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:50:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:50:27,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188756085] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:50:27,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:50:27,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:50:27,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10829750] [2022-02-10 22:50:27,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:50:27,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:50:27,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:50:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:50:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:50:27,895 INFO L87 Difference]: Start difference. First operand 44785 states and 129196 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:00,609 INFO L93 Difference]: Finished difference Result 56654 states and 162214 transitions. [2022-02-10 22:51:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2022-02-10 22:51:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:51:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:00,728 INFO L225 Difference]: With dead ends: 56654 [2022-02-10 22:51:00,728 INFO L226 Difference]: Without dead ends: 56564 [2022-02-10 22:51:00,731 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21249 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=6131, Invalid=47461, Unknown=0, NotChecked=0, Total=53592 [2022-02-10 22:51:00,731 INFO L934 BasicCegarLoop]: 208 mSDtfsCounter, 1829 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:00,731 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 4348 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-10 22:51:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56564 states. [2022-02-10 22:51:01,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56564 to 46285. [2022-02-10 22:51:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46285 states, 46284 states have (on average 2.88386915564774) internal successors, (133477), 46284 states have internal predecessors, (133477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46285 states to 46285 states and 133477 transitions. [2022-02-10 22:51:01,850 INFO L78 Accepts]: Start accepts. Automaton has 46285 states and 133477 transitions. Word has length 85 [2022-02-10 22:51:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:01,851 INFO L470 AbstractCegarLoop]: Abstraction has 46285 states and 133477 transitions. [2022-02-10 22:51:01,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 46285 states and 133477 transitions. [2022-02-10 22:51:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:51:01,927 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:01,927 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:51:01,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 22:51:02,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-10 22:51:02,143 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1840158528, now seen corresponding path program 68 times [2022-02-10 22:51:02,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:02,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151560566] [2022-02-10 22:51:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:02,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:02,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151560566] [2022-02-10 22:51:02,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151560566] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:02,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381460347] [2022-02-10 22:51:02,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:51:02,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:02,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:02,299 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:51:02,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 22:51:02,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:51:02,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:02,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:51:02,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:02,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:03,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381460347] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:03,221 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:03,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-02-10 22:51:03,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603429871] [2022-02-10 22:51:03,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:51:03,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:51:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:51:03,222 INFO L87 Difference]: Start difference. First operand 46285 states and 133477 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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) [2022-02-10 22:51:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:22,754 INFO L93 Difference]: Finished difference Result 48661 states and 139878 transitions. [2022-02-10 22:51:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-10 22:51:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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 85 [2022-02-10 22:51:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:22,853 INFO L225 Difference]: With dead ends: 48661 [2022-02-10 22:51:22,853 INFO L226 Difference]: Without dead ends: 48553 [2022-02-10 22:51:22,854 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2558, Invalid=20698, Unknown=0, NotChecked=0, Total=23256 [2022-02-10 22:51:22,855 INFO L934 BasicCegarLoop]: 177 mSDtfsCounter, 862 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:22,855 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3347 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-10 22:51:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48553 states. [2022-02-10 22:51:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48553 to 46373. [2022-02-10 22:51:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46373 states, 46372 states have (on average 2.883442594669197) internal successors, (133711), 46372 states have internal predecessors, (133711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46373 states to 46373 states and 133711 transitions. [2022-02-10 22:51:23,886 INFO L78 Accepts]: Start accepts. Automaton has 46373 states and 133711 transitions. Word has length 85 [2022-02-10 22:51:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:23,886 INFO L470 AbstractCegarLoop]: Abstraction has 46373 states and 133711 transitions. [2022-02-10 22:51:23,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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) [2022-02-10 22:51:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 46373 states and 133711 transitions. [2022-02-10 22:51:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:51:23,952 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:23,952 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:51:23,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-10 22:51:24,155 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1642898954, now seen corresponding path program 69 times [2022-02-10 22:51:24,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:24,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703698230] [2022-02-10 22:51:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:24,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:24,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703698230] [2022-02-10 22:51:24,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703698230] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:24,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160028588] [2022-02-10 22:51:24,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:51:24,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:24,343 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:51:24,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 22:51:24,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:51:24,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:24,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:51:24,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:24,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:25,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160028588] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:25,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:25,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:51:25,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650141000] [2022-02-10 22:51:25,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:25,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:51:25,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:25,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:51:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:51:25,039 INFO L87 Difference]: Start difference. First operand 46373 states and 133711 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:51:43,773 INFO L93 Difference]: Finished difference Result 57743 states and 165651 transitions. [2022-02-10 22:51:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-10 22:51:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:51:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:51:43,894 INFO L225 Difference]: With dead ends: 57743 [2022-02-10 22:51:43,894 INFO L226 Difference]: Without dead ends: 57671 [2022-02-10 22:51:43,895 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7360 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=2873, Invalid=18007, Unknown=0, NotChecked=0, Total=20880 [2022-02-10 22:51:43,896 INFO L934 BasicCegarLoop]: 201 mSDtfsCounter, 1303 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:51:43,896 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 3884 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-10 22:51:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57671 states. [2022-02-10 22:51:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57671 to 49169. [2022-02-10 22:51:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49169 states, 49168 states have (on average 2.884396355353075) internal successors, (141820), 49168 states have internal predecessors, (141820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49169 states to 49169 states and 141820 transitions. [2022-02-10 22:51:45,070 INFO L78 Accepts]: Start accepts. Automaton has 49169 states and 141820 transitions. Word has length 85 [2022-02-10 22:51:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:51:45,071 INFO L470 AbstractCegarLoop]: Abstraction has 49169 states and 141820 transitions. [2022-02-10 22:51:45,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:51:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 49169 states and 141820 transitions. [2022-02-10 22:51:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:51:45,151 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:51:45,151 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:51:45,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 22:51:45,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:45,351 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:51:45,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:51:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1663616340, now seen corresponding path program 70 times [2022-02-10 22:51:45,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:51:45,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054256641] [2022-02-10 22:51:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:51:45,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:51:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:51:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:45,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:51:45,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054256641] [2022-02-10 22:51:45,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054256641] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:51:45,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956667773] [2022-02-10 22:51:45,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:51:45,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:51:45,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:51:45,524 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:51:45,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 22:51:45,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:51:45,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:51:45,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:51:45,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:51:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:45,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:51:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:51:46,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956667773] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:51:46,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:51:46,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:51:46,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509976691] [2022-02-10 22:51:46,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:51:46,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:51:46,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:51:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:51:46,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:51:46,240 INFO L87 Difference]: Start difference. First operand 49169 states and 141820 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:52:07,639 INFO L93 Difference]: Finished difference Result 59715 states and 170993 transitions. [2022-02-10 22:52:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-02-10 22:52:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:52:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:52:07,766 INFO L225 Difference]: With dead ends: 59715 [2022-02-10 22:52:07,766 INFO L226 Difference]: Without dead ends: 59655 [2022-02-10 22:52:07,767 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12341 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=4300, Invalid=28642, Unknown=0, NotChecked=0, Total=32942 [2022-02-10 22:52:07,767 INFO L934 BasicCegarLoop]: 203 mSDtfsCounter, 1858 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:52:07,767 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 3787 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-10 22:52:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59655 states. [2022-02-10 22:52:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59655 to 47205. [2022-02-10 22:52:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47205 states, 47204 states have (on average 2.881853232776883) internal successors, (136035), 47204 states have internal predecessors, (136035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47205 states to 47205 states and 136035 transitions. [2022-02-10 22:52:08,841 INFO L78 Accepts]: Start accepts. Automaton has 47205 states and 136035 transitions. Word has length 85 [2022-02-10 22:52:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:52:08,841 INFO L470 AbstractCegarLoop]: Abstraction has 47205 states and 136035 transitions. [2022-02-10 22:52:08,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 47205 states and 136035 transitions. [2022-02-10 22:52:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:52:08,911 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:52:08,911 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:52:08,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 22:52:09,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:09,112 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:52:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:52:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1345204234, now seen corresponding path program 71 times [2022-02-10 22:52:09,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:52:09,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775501492] [2022-02-10 22:52:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:52:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:52:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:52:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:09,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:52:09,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775501492] [2022-02-10 22:52:09,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775501492] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:52:09,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303470128] [2022-02-10 22:52:09,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:52:09,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:52:09,282 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:52:09,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 22:52:09,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:52:09,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:52:09,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:52:09,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:52:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:09,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:52:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:10,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303470128] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:52:10,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:52:10,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-02-10 22:52:10,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279358135] [2022-02-10 22:52:10,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:52:10,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 22:52:10,028 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:52:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 22:52:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2022-02-10 22:52:10,028 INFO L87 Difference]: Start difference. First operand 47205 states and 136035 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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) [2022-02-10 22:52:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:52:29,645 INFO L93 Difference]: Finished difference Result 49683 states and 142554 transitions. [2022-02-10 22:52:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-10 22:52:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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 85 [2022-02-10 22:52:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:52:29,752 INFO L225 Difference]: With dead ends: 49683 [2022-02-10 22:52:29,753 INFO L226 Difference]: Without dead ends: 49575 [2022-02-10 22:52:29,755 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5610 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=1960, Invalid=14295, Unknown=1, NotChecked=0, Total=16256 [2022-02-10 22:52:29,755 INFO L934 BasicCegarLoop]: 190 mSDtfsCounter, 1113 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:52:29,755 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 3126 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-10 22:52:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49575 states. [2022-02-10 22:52:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49575 to 47301. [2022-02-10 22:52:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47301 states, 47300 states have (on average 2.8823467230443973) internal successors, (136335), 47300 states have internal predecessors, (136335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47301 states to 47301 states and 136335 transitions. [2022-02-10 22:52:30,798 INFO L78 Accepts]: Start accepts. Automaton has 47301 states and 136335 transitions. Word has length 85 [2022-02-10 22:52:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:52:30,798 INFO L470 AbstractCegarLoop]: Abstraction has 47301 states and 136335 transitions. [2022-02-10 22:52:30,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 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) [2022-02-10 22:52:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 47301 states and 136335 transitions. [2022-02-10 22:52:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:52:30,872 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:52:30,873 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:52:30,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-10 22:52:31,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:31,073 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:52:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:52:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1578644024, now seen corresponding path program 72 times [2022-02-10 22:52:31,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:52:31,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898854366] [2022-02-10 22:52:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:52:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:52:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:52:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:31,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:52:31,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898854366] [2022-02-10 22:52:31,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898854366] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:52:31,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241988060] [2022-02-10 22:52:31,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:52:31,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:52:31,235 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:52:31,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 22:52:31,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:52:31,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:52:31,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:52:31,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:52:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:31,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:52:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:32,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241988060] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:52:32,032 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:52:32,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2022-02-10 22:52:32,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246615171] [2022-02-10 22:52:32,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:52:32,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 22:52:32,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:52:32,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 22:52:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-02-10 22:52:32,033 INFO L87 Difference]: Start difference. First operand 47301 states and 136335 transitions. Second operand has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:52:36,946 INFO L93 Difference]: Finished difference Result 48441 states and 139317 transitions. [2022-02-10 22:52:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 22:52:36,946 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 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 85 [2022-02-10 22:52:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:52:37,052 INFO L225 Difference]: With dead ends: 48441 [2022-02-10 22:52:37,052 INFO L226 Difference]: Without dead ends: 48321 [2022-02-10 22:52:37,053 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=809, Invalid=5197, Unknown=0, NotChecked=0, Total=6006 [2022-02-10 22:52:37,053 INFO L934 BasicCegarLoop]: 153 mSDtfsCounter, 620 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:52:37,053 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2885 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-10 22:52:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48321 states. [2022-02-10 22:52:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48321 to 47357. [2022-02-10 22:52:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47357 states, 47356 states have (on average 2.8817678858011657) internal successors, (136469), 47356 states have internal predecessors, (136469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47357 states to 47357 states and 136469 transitions. [2022-02-10 22:52:38,100 INFO L78 Accepts]: Start accepts. Automaton has 47357 states and 136469 transitions. Word has length 85 [2022-02-10 22:52:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:52:38,100 INFO L470 AbstractCegarLoop]: Abstraction has 47357 states and 136469 transitions. [2022-02-10 22:52:38,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47357 states and 136469 transitions. [2022-02-10 22:52:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:52:38,332 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:52:38,332 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:52:38,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-10 22:52:38,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-02-10 22:52:38,547 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:52:38,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:52:38,548 INFO L85 PathProgramCache]: Analyzing trace with hash 779253390, now seen corresponding path program 73 times [2022-02-10 22:52:38,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:52:38,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917908863] [2022-02-10 22:52:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:52:38,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:52:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:52:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:38,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:52:38,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917908863] [2022-02-10 22:52:38,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917908863] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:52:38,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339482264] [2022-02-10 22:52:38,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:52:38,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:38,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:52:38,711 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:52:38,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 22:52:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:52:38,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:52:38,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:52:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:39,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:52:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:39,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339482264] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:52:39,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:52:39,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:52:39,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712449107] [2022-02-10 22:52:39,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:52:39,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:52:39,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:52:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:52:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:52:39,429 INFO L87 Difference]: Start difference. First operand 47357 states and 136469 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:52:55,516 INFO L93 Difference]: Finished difference Result 58460 states and 167228 transitions. [2022-02-10 22:52:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-10 22:52:55,516 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:52:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:52:55,649 INFO L225 Difference]: With dead ends: 58460 [2022-02-10 22:52:55,649 INFO L226 Difference]: Without dead ends: 58388 [2022-02-10 22:52:55,650 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=3033, Invalid=21459, Unknown=0, NotChecked=0, Total=24492 [2022-02-10 22:52:55,651 INFO L934 BasicCegarLoop]: 207 mSDtfsCounter, 1369 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:52:55,651 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 3531 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-10 22:52:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58388 states. [2022-02-10 22:52:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58388 to 50273. [2022-02-10 22:52:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50273 states, 50272 states have (on average 2.88375238701464) internal successors, (144972), 50272 states have internal predecessors, (144972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50273 states to 50273 states and 144972 transitions. [2022-02-10 22:52:56,856 INFO L78 Accepts]: Start accepts. Automaton has 50273 states and 144972 transitions. Word has length 85 [2022-02-10 22:52:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:52:56,856 INFO L470 AbstractCegarLoop]: Abstraction has 50273 states and 144972 transitions. [2022-02-10 22:52:56,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:52:56,856 INFO L276 IsEmpty]: Start isEmpty. Operand 50273 states and 144972 transitions. [2022-02-10 22:52:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:52:56,950 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:52:56,950 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:52:56,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 22:52:57,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:57,152 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:52:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:52:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash 799970776, now seen corresponding path program 74 times [2022-02-10 22:52:57,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:52:57,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798721625] [2022-02-10 22:52:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:52:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:52:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:52:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:57,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:52:57,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798721625] [2022-02-10 22:52:57,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798721625] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:52:57,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027542356] [2022-02-10 22:52:57,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:52:57,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:52:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:52:57,313 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:52:57,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 22:52:57,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:52:57,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:52:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:52:57,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:52:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:57,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:52:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:52:58,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027542356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:52:58,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:52:58,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:52:58,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75810109] [2022-02-10 22:52:58,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:52:58,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:52:58,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:52:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:52:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:52:58,161 INFO L87 Difference]: Start difference. First operand 50273 states and 144972 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:28,297 INFO L93 Difference]: Finished difference Result 61927 states and 176814 transitions. [2022-02-10 22:53:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-02-10 22:53:28,298 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:53:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:28,515 INFO L225 Difference]: With dead ends: 61927 [2022-02-10 22:53:28,515 INFO L226 Difference]: Without dead ends: 61837 [2022-02-10 22:53:28,516 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15849 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=4900, Invalid=35300, Unknown=0, NotChecked=0, Total=40200 [2022-02-10 22:53:28,517 INFO L934 BasicCegarLoop]: 208 mSDtfsCounter, 1780 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:28,517 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 4526 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-02-10 22:53:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61837 states. [2022-02-10 22:53:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61837 to 50501. [2022-02-10 22:53:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50501 states, 50500 states have (on average 2.8834653465346536) internal successors, (145615), 50500 states have internal predecessors, (145615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50501 states to 50501 states and 145615 transitions. [2022-02-10 22:53:29,816 INFO L78 Accepts]: Start accepts. Automaton has 50501 states and 145615 transitions. Word has length 85 [2022-02-10 22:53:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:29,816 INFO L470 AbstractCegarLoop]: Abstraction has 50501 states and 145615 transitions. [2022-02-10 22:53:29,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 50501 states and 145615 transitions. [2022-02-10 22:53:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:53:29,901 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:29,901 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:53:29,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:30,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:30,103 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:30,107 INFO L85 PathProgramCache]: Analyzing trace with hash 401741818, now seen corresponding path program 75 times [2022-02-10 22:53:30,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:30,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96715882] [2022-02-10 22:53:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:30,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:30,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96715882] [2022-02-10 22:53:30,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96715882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:30,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046566846] [2022-02-10 22:53:30,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:53:30,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:30,273 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:30,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 22:53:30,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:53:30,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:30,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:53:30,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:30,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:30,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046566846] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:30,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:30,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:53:30,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582693357] [2022-02-10 22:53:30,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:30,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:53:30,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:53:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:53:30,946 INFO L87 Difference]: Start difference. First operand 50501 states and 145615 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:53:51,978 INFO L93 Difference]: Finished difference Result 64620 states and 185060 transitions. [2022-02-10 22:53:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-02-10 22:53:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:53:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:53:52,199 INFO L225 Difference]: With dead ends: 64620 [2022-02-10 22:53:52,199 INFO L226 Difference]: Without dead ends: 64515 [2022-02-10 22:53:52,201 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30396 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=7074, Invalid=66096, Unknown=0, NotChecked=0, Total=73170 [2022-02-10 22:53:52,202 INFO L934 BasicCegarLoop]: 202 mSDtfsCounter, 1837 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:53:52,202 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 3881 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-10 22:53:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64515 states. [2022-02-10 22:53:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64515 to 53397. [2022-02-10 22:53:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53397 states, 53396 states have (on average 2.8872387444752414) internal successors, (154167), 53396 states have internal predecessors, (154167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53397 states to 53397 states and 154167 transitions. [2022-02-10 22:53:53,546 INFO L78 Accepts]: Start accepts. Automaton has 53397 states and 154167 transitions. Word has length 85 [2022-02-10 22:53:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:53:53,546 INFO L470 AbstractCegarLoop]: Abstraction has 53397 states and 154167 transitions. [2022-02-10 22:53:53,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:53:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 53397 states and 154167 transitions. [2022-02-10 22:53:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:53:53,637 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:53:53,637 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:53:53,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-10 22:53:53,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-02-10 22:53:53,849 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:53:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:53:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash 951304790, now seen corresponding path program 76 times [2022-02-10 22:53:53,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:53:53,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738667793] [2022-02-10 22:53:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:53:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:53:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:53:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:54,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:53:54,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738667793] [2022-02-10 22:53:54,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738667793] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:53:54,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448635990] [2022-02-10 22:53:54,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:53:54,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:53:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:53:54,159 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:53:54,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 22:53:54,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:53:54,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:53:54,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:53:54,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:53:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:54,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:53:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:53:54,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448635990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:53:54,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:53:54,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:53:54,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607018390] [2022-02-10 22:53:54,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:53:54,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:53:54,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:53:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:53:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:53:54,823 INFO L87 Difference]: Start difference. First operand 53397 states and 154167 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:20,905 INFO L93 Difference]: Finished difference Result 81855 states and 234593 transitions. [2022-02-10 22:54:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-02-10 22:54:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:54:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:21,181 INFO L225 Difference]: With dead ends: 81855 [2022-02-10 22:54:21,181 INFO L226 Difference]: Without dead ends: 81225 [2022-02-10 22:54:21,185 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49445 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=10013, Invalid=104569, Unknown=0, NotChecked=0, Total=114582 [2022-02-10 22:54:21,185 INFO L934 BasicCegarLoop]: 253 mSDtfsCounter, 2143 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 3659 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:21,185 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2143 Valid, 5999 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 3659 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-10 22:54:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81225 states. [2022-02-10 22:54:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81225 to 59411. [2022-02-10 22:54:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59411 states, 59410 states have (on average 2.8921057061100823) internal successors, (171820), 59410 states have internal predecessors, (171820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59411 states to 59411 states and 171820 transitions. [2022-02-10 22:54:22,729 INFO L78 Accepts]: Start accepts. Automaton has 59411 states and 171820 transitions. Word has length 85 [2022-02-10 22:54:22,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:22,729 INFO L470 AbstractCegarLoop]: Abstraction has 59411 states and 171820 transitions. [2022-02-10 22:54:22,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:22,729 INFO L276 IsEmpty]: Start isEmpty. Operand 59411 states and 171820 transitions. [2022-02-10 22:54:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:54:22,824 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:22,825 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:54:22,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-10 22:54:23,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-02-10 22:54:23,025 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1304018864, now seen corresponding path program 77 times [2022-02-10 22:54:23,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:23,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791346219] [2022-02-10 22:54:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:23,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:23,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791346219] [2022-02-10 22:54:23,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791346219] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:23,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955821193] [2022-02-10 22:54:23,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:54:23,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:23,160 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:23,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 22:54:23,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 22:54:23,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:23,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:54:23,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:23,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:23,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955821193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:23,782 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:23,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-02-10 22:54:23,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191194832] [2022-02-10 22:54:23,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:23,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 22:54:23,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 22:54:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-02-10 22:54:23,783 INFO L87 Difference]: Start difference. First operand 59411 states and 171820 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:54:39,288 INFO L93 Difference]: Finished difference Result 86380 states and 248788 transitions. [2022-02-10 22:54:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-02-10 22:54:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 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 85 [2022-02-10 22:54:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:54:39,577 INFO L225 Difference]: With dead ends: 86380 [2022-02-10 22:54:39,577 INFO L226 Difference]: Without dead ends: 85795 [2022-02-10 22:54:39,578 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19001 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=4885, Invalid=44177, Unknown=0, NotChecked=0, Total=49062 [2022-02-10 22:54:39,579 INFO L934 BasicCegarLoop]: 234 mSDtfsCounter, 1293 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-10 22:54:39,579 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3871 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-10 22:54:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85795 states. [2022-02-10 22:54:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85795 to 63661. [2022-02-10 22:54:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63661 states, 63660 states have (on average 2.886946277097078) internal successors, (183783), 63660 states have internal predecessors, (183783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63661 states to 63661 states and 183783 transitions. [2022-02-10 22:54:41,325 INFO L78 Accepts]: Start accepts. Automaton has 63661 states and 183783 transitions. Word has length 85 [2022-02-10 22:54:41,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:54:41,326 INFO L470 AbstractCegarLoop]: Abstraction has 63661 states and 183783 transitions. [2022-02-10 22:54:41,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:54:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 63661 states and 183783 transitions. [2022-02-10 22:54:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:54:41,424 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:54:41,425 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:54:41,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-10 22:54:41,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:41,625 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:54:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:54:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1322894808, now seen corresponding path program 78 times [2022-02-10 22:54:41,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:54:41,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714249505] [2022-02-10 22:54:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:54:41,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:54:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:54:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:41,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:54:41,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714249505] [2022-02-10 22:54:41,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714249505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:54:41,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555908537] [2022-02-10 22:54:41,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:54:41,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:54:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:54:41,968 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:54:41,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 22:54:42,065 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 22:54:42,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:54:42,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:54:42,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:54:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:42,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:54:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:54:42,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555908537] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:54:42,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:54:42,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:54:42,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766355413] [2022-02-10 22:54:42,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:54:42,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:54:42,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:54:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:54:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:54:42,699 INFO L87 Difference]: Start difference. First operand 63661 states and 183783 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:55:08,471 INFO L93 Difference]: Finished difference Result 81549 states and 232722 transitions. [2022-02-10 22:55:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2022-02-10 22:55:08,471 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:55:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:55:08,694 INFO L225 Difference]: With dead ends: 81549 [2022-02-10 22:55:08,694 INFO L226 Difference]: Without dead ends: 81204 [2022-02-10 22:55:08,698 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38668 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=8931, Invalid=82575, Unknown=0, NotChecked=0, Total=91506 [2022-02-10 22:55:08,698 INFO L934 BasicCegarLoop]: 210 mSDtfsCounter, 2046 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:55:08,698 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 3837 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-10 22:55:08,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81204 states. [2022-02-10 22:55:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81204 to 67437. [2022-02-10 22:55:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67437 states, 67436 states have (on average 2.887997508749036) internal successors, (194755), 67436 states have internal predecessors, (194755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67437 states to 67437 states and 194755 transitions. [2022-02-10 22:55:10,657 INFO L78 Accepts]: Start accepts. Automaton has 67437 states and 194755 transitions. Word has length 85 [2022-02-10 22:55:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:55:10,657 INFO L470 AbstractCegarLoop]: Abstraction has 67437 states and 194755 transitions. [2022-02-10 22:55:10,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 67437 states and 194755 transitions. [2022-02-10 22:55:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:55:10,962 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:55:10,963 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:55:10,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-10 22:55:11,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:11,163 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:55:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:55:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1872457780, now seen corresponding path program 79 times [2022-02-10 22:55:11,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:55:11,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191386042] [2022-02-10 22:55:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:55:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:55:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:55:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:11,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:55:11,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191386042] [2022-02-10 22:55:11,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191386042] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:55:11,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923680771] [2022-02-10 22:55:11,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:55:11,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:11,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:55:11,331 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:55:11,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 22:55:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:55:11,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:55:11,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:55:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:11,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:55:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:12,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923680771] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:55:12,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:55:12,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:55:12,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395856690] [2022-02-10 22:55:12,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:55:12,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:55:12,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:55:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:55:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:55:12,087 INFO L87 Difference]: Start difference. First operand 67437 states and 194755 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:55:37,826 INFO L93 Difference]: Finished difference Result 92125 states and 263509 transitions. [2022-02-10 22:55:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2022-02-10 22:55:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 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 85 [2022-02-10 22:55:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:55:38,033 INFO L225 Difference]: With dead ends: 92125 [2022-02-10 22:55:38,033 INFO L226 Difference]: Without dead ends: 91465 [2022-02-10 22:55:38,037 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38142 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=9186, Invalid=81716, Unknown=0, NotChecked=0, Total=90902 [2022-02-10 22:55:38,037 INFO L934 BasicCegarLoop]: 240 mSDtfsCounter, 1966 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-10 22:55:38,037 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1966 Valid, 4518 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-10 22:55:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91465 states. [2022-02-10 22:55:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91465 to 68045. [2022-02-10 22:55:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68045 states, 68044 states have (on average 2.8846481688319323) internal successors, (196283), 68044 states have internal predecessors, (196283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68045 states to 68045 states and 196283 transitions. [2022-02-10 22:55:40,103 INFO L78 Accepts]: Start accepts. Automaton has 68045 states and 196283 transitions. Word has length 85 [2022-02-10 22:55:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:55:40,103 INFO L470 AbstractCegarLoop]: Abstraction has 68045 states and 196283 transitions. [2022-02-10 22:55:40,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:55:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 68045 states and 196283 transitions. [2022-02-10 22:55:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:55:40,238 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:55:40,238 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:55:40,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 22:55:40,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-02-10 22:55:40,438 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:55:40,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:55:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash -871372052, now seen corresponding path program 80 times [2022-02-10 22:55:40,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:55:40,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007646730] [2022-02-10 22:55:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:55:40,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:55:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:55:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:40,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:55:40,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007646730] [2022-02-10 22:55:40,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007646730] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:55:40,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476238514] [2022-02-10 22:55:40,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:55:40,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:55:40,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:55:40,909 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:55:40,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 22:55:40,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:55:40,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:55:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:55:40,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:55:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:41,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:55:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:55:41,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476238514] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:55:41,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:55:41,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-02-10 22:55:41,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953854990] [2022-02-10 22:55:41,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:55:41,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-10 22:55:41,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:55:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-10 22:55:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:55:41,700 INFO L87 Difference]: Start difference. First operand 68045 states and 196283 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:56:38,147 INFO L93 Difference]: Finished difference Result 77721 states and 222828 transitions. [2022-02-10 22:56:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-10 22:56:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 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 85 [2022-02-10 22:56:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:56:38,352 INFO L225 Difference]: With dead ends: 77721 [2022-02-10 22:56:38,352 INFO L226 Difference]: Without dead ends: 77649 [2022-02-10 22:56:38,353 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14127 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=4451, Invalid=31835, Unknown=4, NotChecked=0, Total=36290 [2022-02-10 22:56:38,354 INFO L934 BasicCegarLoop]: 216 mSDtfsCounter, 1181 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:56:38,354 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 3652 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-02-10 22:56:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77649 states. [2022-02-10 22:56:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77649 to 69133. [2022-02-10 22:56:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69133 states, 69132 states have (on average 2.884264884568651) internal successors, (199395), 69132 states have internal predecessors, (199395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69133 states to 69133 states and 199395 transitions. [2022-02-10 22:56:40,166 INFO L78 Accepts]: Start accepts. Automaton has 69133 states and 199395 transitions. Word has length 85 [2022-02-10 22:56:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:56:40,166 INFO L470 AbstractCegarLoop]: Abstraction has 69133 states and 199395 transitions. [2022-02-10 22:56:40,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:56:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 69133 states and 199395 transitions. [2022-02-10 22:56:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-10 22:56:40,537 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:56:40,537 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-02-10 22:56:40,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-10 22:56:40,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:40,758 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 22:56:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:56:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -850654666, now seen corresponding path program 81 times [2022-02-10 22:56:40,759 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:56:40,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171757482] [2022-02-10 22:56:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:56:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:56:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:56:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:40,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:56:40,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171757482] [2022-02-10 22:56:40,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171757482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:56:40,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131491684] [2022-02-10 22:56:40,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:56:40,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:56:40,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:56:40,934 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 22:56:40,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 22:56:41,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 22:56:41,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:56:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:56:41,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:56:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:41,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:56:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:56:41,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131491684] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:56:41,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:56:41,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-02-10 22:56:41,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241915726] [2022-02-10 22:56:41,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:56:41,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-10 22:56:41,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:56:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-10 22:56:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 22:56:41,846 INFO L87 Difference]: Start difference. First operand 69133 states and 199395 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-10 22:57:07,732 WARN L244 SmtUtils]: Removed 8 from assertion stack [2022-02-10 22:57:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 22:57:07,734 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4815 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=2294, Invalid=11986, Unknown=0, NotChecked=0, Total=14280 [2022-02-10 22:57:07,734 INFO L934 BasicCegarLoop]: 114 mSDtfsCounter, 696 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:07,734 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2167 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-10 22:57:07,735 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-10 22:57:07,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-10 22:57:07,767 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 22:57:07,767 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 [2022-02-10 22:57:07,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:07,935 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 2408ms.. [2022-02-10 22:57:07,937 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 22:57:07,937 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 22:57:07,939 INFO L733 BasicCegarLoop]: Path program histogram: [81, 9, 1, 1] [2022-02-10 22:57:07,940 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 22:57:07,940 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 22:57:07,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 10:57:07 BasicIcfg [2022-02-10 22:57:07,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 22:57:07,942 INFO L158 Benchmark]: Toolchain (without parser) took 815275.87ms. Allocated memory was 175.1MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 117.9MB in the beginning and 1.0GB in the end (delta: -892.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-02-10 22:57:07,942 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 134.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 22:57:07,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.82ms. Allocated memory was 175.1MB in the beginning and 266.3MB in the end (delta: 91.2MB). Free memory was 117.7MB in the beginning and 239.6MB in the end (delta: -121.9MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-02-10 22:57:07,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.94ms. Allocated memory is still 266.3MB. Free memory was 239.0MB in the beginning and 237.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 22:57:07,942 INFO L158 Benchmark]: Boogie Preprocessor took 27.61ms. Allocated memory is still 266.3MB. Free memory was 237.9MB in the beginning and 236.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 22:57:07,942 INFO L158 Benchmark]: RCFGBuilder took 426.67ms. Allocated memory is still 266.3MB. Free memory was 236.4MB in the beginning and 222.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-10 22:57:07,942 INFO L158 Benchmark]: TraceAbstraction took 814539.17ms. Allocated memory was 266.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 221.7MB in the beginning and 1.0GB in the end (delta: -789.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-02-10 22:57:07,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 134.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 237.82ms. Allocated memory was 175.1MB in the beginning and 266.3MB in the end (delta: 91.2MB). Free memory was 117.7MB in the beginning and 239.6MB in the end (delta: -121.9MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.94ms. Allocated memory is still 266.3MB. Free memory was 239.0MB in the beginning and 237.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.61ms. Allocated memory is still 266.3MB. Free memory was 237.9MB in the beginning and 236.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 426.67ms. Allocated memory is still 266.3MB. Free memory was 236.4MB in the beginning and 222.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 814539.17ms. Allocated memory was 266.3MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 221.7MB in the beginning and 1.0GB in the end (delta: -789.0MB). Peak memory consumption was 1.3GB. 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: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 2408ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 2408ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (69133states) and FLOYD_HOARE automaton (currently 98 states, 33 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 2408ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 814.4s, OverallIterations: 92, TraceHistogramMax: 3, PathProgramHistogramMax: 81, EmptinessCheckTime: 4.1s, AutomataDifference: 695.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70747 SdHoareTripleChecker+Valid, 93.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70747 mSDsluCounter, 193713 SdHoareTripleChecker+Invalid, 84.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 194537 mSDsCounter, 8473 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99714 IncrementalHoareTripleChecker+Invalid, 108187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8473 mSolverCounterUnsat, 14705 mSDtfsCounter, 99714 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21162 GetRequests, 11864 SyntacticMatches, 72 SemanticMatches, 9225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567668 ImplicationChecksByTransitivity, 593.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69133occurred in iteration=91, InterpolantAutomatonStates: 8462, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.2s AutomataMinimizationTime, 91 MinimizatonAttempts, 430504 StatesRemovedByMinimization, 90 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 44.9s InterpolantComputationTime, 13375 NumberOfCodeBlocks, 13258 NumberOfCodeBlocksAsserted, 270 NumberOfCheckSat, 19387 ConstructedInterpolants, 0 QuantifiedInterpolants, 76848 SizeOfPredicates, 745 NumberOfNonLiveVariables, 14051 ConjunctsInSsa, 1344 ConjunctsInUnsatCore, 253 InterpolantComputations, 12 PerfectInterpolantSequences, 1718/3277 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