/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 16:13:28,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 16:13:28,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 16:13:28,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 16:13:28,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 16:13:28,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 16:13:28,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 16:13:28,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 16:13:28,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 16:13:28,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 16:13:28,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 16:13:28,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 16:13:28,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 16:13:28,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 16:13:28,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 16:13:28,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 16:13:28,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 16:13:28,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 16:13:28,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 16:13:28,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 16:13:28,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 16:13:28,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 16:13:28,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 16:13:28,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 16:13:28,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 16:13:28,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 16:13:28,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 16:13:28,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 16:13:28,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 16:13:28,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 16:13:28,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 16:13:28,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 16:13:28,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 16:13:28,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 16:13:28,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 16:13:28,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 16:13:28,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 16:13:28,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 16:13:28,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 16:13:28,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 16:13:28,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 16:13:28,985 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 16:13:28,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 16:13:28,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 16:13:28,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 16:13:28,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 16:13:28,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 16:13:28,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 16:13:28,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 16:13:28,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 16:13:28,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 16:13:28,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 16:13:28,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 16:13:28,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 16:13:28,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 16:13:28,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 16:13:28,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 16:13:28,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 16:13:28,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 16:13:28,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 16:13:28,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 16:13:28,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 16:13:28,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 16:13:28,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 16:13:28,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 16:13:28,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 16:13:28,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 16:13:29,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 16:13:29,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 16:13:29,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 16:13:29,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 16:13:29,307 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 16:13:29,307 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2020-10-15 16:13:29,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4e889b/2470333f23df45c6a0c858743fd58abb/FLAG081412bc9 [2020-10-15 16:13:29,863 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 16:13:29,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2020-10-15 16:13:29,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4e889b/2470333f23df45c6a0c858743fd58abb/FLAG081412bc9 [2020-10-15 16:13:30,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4e889b/2470333f23df45c6a0c858743fd58abb [2020-10-15 16:13:30,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 16:13:30,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 16:13:30,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 16:13:30,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 16:13:30,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 16:13:30,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:13:30" (1/1) ... [2020-10-15 16:13:30,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44eae845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:30, skipping insertion in model container [2020-10-15 16:13:30,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:13:30" (1/1) ... [2020-10-15 16:13:30,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 16:13:30,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 16:13:30,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 16:13:30,799 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 16:13:30,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 16:13:31,086 INFO L208 MainTranslator]: Completed translation [2020-10-15 16:13:31,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31 WrapperNode [2020-10-15 16:13:31,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 16:13:31,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 16:13:31,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 16:13:31,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 16:13:31,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 16:13:31,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 16:13:31,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 16:13:31,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 16:13:31,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... [2020-10-15 16:13:31,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 16:13:31,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 16:13:31,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 16:13:31,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 16:13:31,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 16:13:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 16:13:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 16:13:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 16:13:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-10-15 16:13:31,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-10-15 16:13:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 16:13:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-15 16:13:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 16:13:31,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 16:13:31,347 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 16:13:31,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 16:13:31,842 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-15 16:13:31,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:13:31 BoogieIcfgContainer [2020-10-15 16:13:31,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 16:13:31,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 16:13:31,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 16:13:31,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 16:13:31,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:13:30" (1/3) ... [2020-10-15 16:13:31,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce43d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:13:31, skipping insertion in model container [2020-10-15 16:13:31,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:31" (2/3) ... [2020-10-15 16:13:31,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce43d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:13:31, skipping insertion in model container [2020-10-15 16:13:31,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:13:31" (3/3) ... [2020-10-15 16:13:31,854 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-10-15 16:13:31,865 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 16:13:31,865 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 16:13:31,873 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 16:13:31,874 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 16:13:31,901 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,901 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,902 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,902 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,902 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,903 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,903 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,903 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,903 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,904 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,904 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,904 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,904 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,905 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,905 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,905 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,906 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,906 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,906 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,906 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,907 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,907 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,907 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,907 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,908 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,908 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,908 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,908 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,909 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,909 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,909 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,910 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,910 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,910 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,910 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,910 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,911 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,911 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,911 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,912 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,912 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,912 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,912 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,912 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,913 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,913 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,913 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,913 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,914 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,914 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,914 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,914 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,915 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,915 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,915 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,915 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,916 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,916 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,916 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,916 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,917 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,917 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,917 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,917 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,917 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,918 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,918 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,918 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,918 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,919 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,919 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,919 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,919 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,920 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,920 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,920 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,920 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,921 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,921 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,921 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,921 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,922 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,922 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,922 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,922 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,923 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,926 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,927 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,927 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,927 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,927 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,928 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,928 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,928 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,928 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,929 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,929 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,929 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,929 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,929 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,930 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,930 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,930 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,930 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,931 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,931 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,931 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,931 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,931 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,932 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,932 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:13:31,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 16:13:31,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 16:13:31,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 16:13:31,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 16:13:31,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 16:13:31,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 16:13:31,977 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 16:13:31,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 16:13:31,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 16:13:31,992 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 16:13:31,994 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 105 transitions, 218 flow [2020-10-15 16:13:31,997 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 105 transitions, 218 flow [2020-10-15 16:13:31,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 94 places, 105 transitions, 218 flow [2020-10-15 16:13:32,058 INFO L129 PetriNetUnfolder]: 18/126 cut-off events. [2020-10-15 16:13:32,059 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2020-10-15 16:13:32,065 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 126 events. 18/126 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2020-10-15 16:13:32,071 INFO L117 LiptonReduction]: Number of co-enabled transitions 2652 [2020-10-15 16:13:34,184 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-15 16:13:34,398 INFO L132 LiptonReduction]: Checked pairs total: 2598 [2020-10-15 16:13:34,399 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-15 16:13:34,406 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 25 transitions, 58 flow [2020-10-15 16:13:34,418 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 73 states. [2020-10-15 16:13:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-15 16:13:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 16:13:34,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:13:34,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:13:34,428 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:13:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:13:34,433 INFO L82 PathProgramCache]: Analyzing trace with hash -734709978, now seen corresponding path program 1 times [2020-10-15 16:13:34,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:13:34,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249184550] [2020-10-15 16:13:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:13:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:13:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:13:34,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249184550] [2020-10-15 16:13:34,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 16:13:34,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 16:13:34,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465831859] [2020-10-15 16:13:34,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 16:13:34,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:13:34,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 16:13:34,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:13:34,623 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-15 16:13:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:13:34,686 INFO L93 Difference]: Finished difference Result 61 states and 119 transitions. [2020-10-15 16:13:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 16:13:34,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-15 16:13:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:13:34,700 INFO L225 Difference]: With dead ends: 61 [2020-10-15 16:13:34,700 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 16:13:34,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:13:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 16:13:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-15 16:13:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 16:13:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 108 transitions. [2020-10-15 16:13:34,745 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 108 transitions. Word has length 7 [2020-10-15 16:13:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:13:34,746 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 108 transitions. [2020-10-15 16:13:34,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 16:13:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 108 transitions. [2020-10-15 16:13:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 16:13:34,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:13:34,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:13:34,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 16:13:34,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:13:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:13:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 654852975, now seen corresponding path program 1 times [2020-10-15 16:13:34,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:13:34,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751480574] [2020-10-15 16:13:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:13:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:13:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:13:34,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751480574] [2020-10-15 16:13:34,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363774971] [2020-10-15 16:13:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:13:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:13:34,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-15 16:13:34,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:13:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:13:34,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:13:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-15 16:13:34,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228391973] [2020-10-15 16:13:34,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 16:13:34,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:13:34,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 16:13:34,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-15 16:13:34,898 INFO L87 Difference]: Start difference. First operand 53 states and 108 transitions. Second operand 5 states. [2020-10-15 16:13:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:13:34,924 INFO L93 Difference]: Finished difference Result 42 states and 81 transitions. [2020-10-15 16:13:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 16:13:34,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-15 16:13:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:13:34,925 INFO L225 Difference]: With dead ends: 42 [2020-10-15 16:13:34,925 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 16:13:34,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-15 16:13:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 16:13:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-15 16:13:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-15 16:13:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2020-10-15 16:13:34,934 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 8 [2020-10-15 16:13:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:13:34,935 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2020-10-15 16:13:34,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 16:13:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2020-10-15 16:13:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 16:13:34,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:13:34,936 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:13:35,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-15 16:13:35,150 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:13:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:13:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash 781631558, now seen corresponding path program 2 times [2020-10-15 16:13:35,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:13:35,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655594980] [2020-10-15 16:13:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:13:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:13:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:13:35,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655594980] [2020-10-15 16:13:35,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959895527] [2020-10-15 16:13:35,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:13:35,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-15 16:13:35,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:13:35,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-15 16:13:35,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:13:35,374 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2020-10-15 16:13:35,377 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,403 INFO L625 ElimStorePlain]: treesize reduction 40, result has 24.5 percent of original size [2020-10-15 16:13:35,406 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:4 [2020-10-15 16:13:35,462 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-15 16:13:35,463 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 16:13:35,468 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-15 16:13:35,502 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2020-10-15 16:13:35,503 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 16:13:35,512 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 16:13:35,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-10-15 16:13:35,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2020-10-15 16:13:35,592 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 16:13:35,599 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 16:13:35,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:7 [2020-10-15 16:13:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:13:35,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 16:13:35,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 10 [2020-10-15 16:13:35,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593612355] [2020-10-15 16:13:35,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 16:13:35,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:13:35,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 16:13:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 16:13:35,615 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand 8 states. [2020-10-15 16:13:43,773 WARN L193 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-15 16:13:51,845 WARN L193 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-15 16:13:55,908 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-15 16:14:09,975 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-15 16:14:16,033 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-15 16:14:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:36,754 INFO L93 Difference]: Finished difference Result 115 states and 234 transitions. [2020-10-15 16:14:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 16:14:36,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-15 16:14:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:36,758 INFO L225 Difference]: With dead ends: 115 [2020-10-15 16:14:36,758 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 16:14:36,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=112, Invalid=301, Unknown=7, NotChecked=0, Total=420 [2020-10-15 16:14:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 16:14:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 52. [2020-10-15 16:14:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 16:14:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 106 transitions. [2020-10-15 16:14:36,769 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 106 transitions. Word has length 9 [2020-10-15 16:14:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:36,770 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 106 transitions. [2020-10-15 16:14:36,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 16:14:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 106 transitions. [2020-10-15 16:14:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 16:14:36,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:36,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:14:36,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:36,979 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:36,979 INFO L82 PathProgramCache]: Analyzing trace with hash -472215434, now seen corresponding path program 1 times [2020-10-15 16:14:36,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:36,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86393116] [2020-10-15 16:14:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 16:14:37,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86393116] [2020-10-15 16:14:37,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303740752] [2020-10-15 16:14:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 16:14:37,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 16:14:37,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:37,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-15 16:14:37,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526987884] [2020-10-15 16:14:37,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 16:14:37,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:37,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 16:14:37,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 16:14:37,118 INFO L87 Difference]: Start difference. First operand 52 states and 106 transitions. Second operand 6 states. [2020-10-15 16:14:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:37,141 INFO L93 Difference]: Finished difference Result 53 states and 107 transitions. [2020-10-15 16:14:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 16:14:37,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-15 16:14:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:37,143 INFO L225 Difference]: With dead ends: 53 [2020-10-15 16:14:37,143 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 16:14:37,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-15 16:14:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 16:14:37,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-15 16:14:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 16:14:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 107 transitions. [2020-10-15 16:14:37,150 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 107 transitions. Word has length 11 [2020-10-15 16:14:37,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:37,150 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 107 transitions. [2020-10-15 16:14:37,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 16:14:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 107 transitions. [2020-10-15 16:14:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 16:14:37,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:37,151 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:14:37,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:37,364 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1112297535, now seen corresponding path program 2 times [2020-10-15 16:14:37,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:37,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74519900] [2020-10-15 16:14:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 16:14:37,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74519900] [2020-10-15 16:14:37,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558558220] [2020-10-15 16:14:37,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:37,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:14:37,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:37,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-15 16:14:37,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 16:14:37,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:37,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-15 16:14:37,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768746217] [2020-10-15 16:14:37,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 16:14:37,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 16:14:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-15 16:14:37,503 INFO L87 Difference]: Start difference. First operand 53 states and 107 transitions. Second operand 7 states. [2020-10-15 16:14:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:37,523 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-10-15 16:14:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 16:14:37,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-15 16:14:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:37,524 INFO L225 Difference]: With dead ends: 54 [2020-10-15 16:14:37,525 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 16:14:37,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-15 16:14:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 16:14:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-15 16:14:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-15 16:14:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2020-10-15 16:14:37,531 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 12 [2020-10-15 16:14:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:37,531 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2020-10-15 16:14:37,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 16:14:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-10-15 16:14:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 16:14:37,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:37,532 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:14:37,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:37,745 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1307407978, now seen corresponding path program 3 times [2020-10-15 16:14:37,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:37,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854711934] [2020-10-15 16:14:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 16:14:37,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854711934] [2020-10-15 16:14:37,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643798859] [2020-10-15 16:14:37,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:37,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 16:14:37,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-15 16:14:37,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:37,915 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-15 16:14:37,915 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 16:14:37,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 16:14:37,921 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 16:14:37,921 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:7 [2020-10-15 16:14:37,936 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-15 16:14:37,937 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 16:14:37,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 16:14:37,941 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 16:14:37,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-10-15 16:14:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 16:14:37,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 16:14:37,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-10-15 16:14:37,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180014318] [2020-10-15 16:14:37,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 16:14:37,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 16:14:37,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 16:14:37,956 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 7 states. [2020-10-15 16:14:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:38,110 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-10-15 16:14:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 16:14:38,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-15 16:14:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:38,115 INFO L225 Difference]: With dead ends: 74 [2020-10-15 16:14:38,115 INFO L226 Difference]: Without dead ends: 74 [2020-10-15 16:14:38,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-15 16:14:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-15 16:14:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 49. [2020-10-15 16:14:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 16:14:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2020-10-15 16:14:38,132 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 13 [2020-10-15 16:14:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:38,132 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2020-10-15 16:14:38,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 16:14:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2020-10-15 16:14:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 16:14:38,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:38,134 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:38,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-15 16:14:38,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:38,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1307414801, now seen corresponding path program 1 times [2020-10-15 16:14:38,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:38,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537326089] [2020-10-15 16:14:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:38,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537326089] [2020-10-15 16:14:38,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611745679] [2020-10-15 16:14:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:38,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 16:14:38,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:38,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:38,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-15 16:14:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001340195] [2020-10-15 16:14:38,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 16:14:38,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 16:14:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 16:14:38,571 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand 8 states. [2020-10-15 16:14:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:38,595 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-15 16:14:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 16:14:38,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-15 16:14:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:38,596 INFO L225 Difference]: With dead ends: 50 [2020-10-15 16:14:38,596 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 16:14:38,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-15 16:14:38,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 16:14:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-15 16:14:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 16:14:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 96 transitions. [2020-10-15 16:14:38,605 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 96 transitions. Word has length 13 [2020-10-15 16:14:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:38,605 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 96 transitions. [2020-10-15 16:14:38,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 16:14:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 96 transitions. [2020-10-15 16:14:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 16:14:38,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:38,610 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:38,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:38,819 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:38,820 INFO L82 PathProgramCache]: Analyzing trace with hash 991125624, now seen corresponding path program 2 times [2020-10-15 16:14:38,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:38,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150023327] [2020-10-15 16:14:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:38,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150023327] [2020-10-15 16:14:38,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085135103] [2020-10-15 16:14:38,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:38,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:14:38,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:38,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 16:14:38,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:38,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:38,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-15 16:14:38,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796399453] [2020-10-15 16:14:38,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 16:14:38,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:38,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 16:14:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-15 16:14:38,953 INFO L87 Difference]: Start difference. First operand 50 states and 96 transitions. Second operand 9 states. [2020-10-15 16:14:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:38,972 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-15 16:14:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 16:14:38,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-15 16:14:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:38,975 INFO L225 Difference]: With dead ends: 51 [2020-10-15 16:14:38,975 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 16:14:38,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-15 16:14:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 16:14:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-15 16:14:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 16:14:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-15 16:14:38,983 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 14 [2020-10-15 16:14:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:38,986 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-15 16:14:38,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 16:14:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-15 16:14:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 16:14:38,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:38,987 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:39,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:39,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:39,193 INFO L82 PathProgramCache]: Analyzing trace with hash -768565233, now seen corresponding path program 3 times [2020-10-15 16:14:39,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:39,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217256981] [2020-10-15 16:14:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:39,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217256981] [2020-10-15 16:14:39,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286461808] [2020-10-15 16:14:39,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:39,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 16:14:39,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:39,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 16:14:39,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:39,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:39,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-15 16:14:39,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137343685] [2020-10-15 16:14:39,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 16:14:39,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:39,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 16:14:39,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-15 16:14:39,352 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 10 states. [2020-10-15 16:14:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:39,373 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-10-15 16:14:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 16:14:39,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-15 16:14:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:39,374 INFO L225 Difference]: With dead ends: 52 [2020-10-15 16:14:39,374 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 16:14:39,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-15 16:14:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 16:14:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-15 16:14:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 16:14:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-15 16:14:39,379 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 15 [2020-10-15 16:14:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:39,379 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-15 16:14:39,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 16:14:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-15 16:14:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 16:14:39,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:39,381 INFO L422 BasicCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:39,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-15 16:14:39,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:39,592 INFO L82 PathProgramCache]: Analyzing trace with hash 515593048, now seen corresponding path program 4 times [2020-10-15 16:14:39,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:39,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718325465] [2020-10-15 16:14:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:39,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718325465] [2020-10-15 16:14:39,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816654121] [2020-10-15 16:14:39,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:39,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:14:39,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:39,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 16:14:39,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:39,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:39,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-15 16:14:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597215928] [2020-10-15 16:14:39,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 16:14:39,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 16:14:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 16:14:39,750 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 11 states. [2020-10-15 16:14:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:39,772 INFO L93 Difference]: Finished difference Result 53 states and 99 transitions. [2020-10-15 16:14:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 16:14:39,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-10-15 16:14:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:39,774 INFO L225 Difference]: With dead ends: 53 [2020-10-15 16:14:39,774 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 16:14:39,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-15 16:14:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 16:14:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-15 16:14:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 16:14:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-15 16:14:39,778 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 16 [2020-10-15 16:14:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:39,778 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-15 16:14:39,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 16:14:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-15 16:14:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 16:14:39,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:39,779 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:39,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:39,989 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:39,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1669794095, now seen corresponding path program 5 times [2020-10-15 16:14:39,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:39,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851334293] [2020-10-15 16:14:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:40,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851334293] [2020-10-15 16:14:40,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077771755] [2020-10-15 16:14:40,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:40,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-15 16:14:40,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:40,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 16:14:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:40,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:40,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-15 16:14:40,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106845203] [2020-10-15 16:14:40,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 16:14:40,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:40,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 16:14:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 16:14:40,201 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 12 states. [2020-10-15 16:14:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:40,228 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-10-15 16:14:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 16:14:40,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-10-15 16:14:40,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:40,229 INFO L225 Difference]: With dead ends: 54 [2020-10-15 16:14:40,229 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 16:14:40,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-15 16:14:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 16:14:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-15 16:14:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-15 16:14:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 100 transitions. [2020-10-15 16:14:40,233 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 100 transitions. Word has length 17 [2020-10-15 16:14:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:40,233 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 100 transitions. [2020-10-15 16:14:40,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 16:14:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 100 transitions. [2020-10-15 16:14:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 16:14:40,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:40,234 INFO L422 BasicCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:40,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:40,438 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:40,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1204679112, now seen corresponding path program 6 times [2020-10-15 16:14:40,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:40,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458281870] [2020-10-15 16:14:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:40,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458281870] [2020-10-15 16:14:40,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19821308] [2020-10-15 16:14:40,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:40,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-15 16:14:40,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:40,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 16:14:40,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:40,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:40,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-15 16:14:40,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57940203] [2020-10-15 16:14:40,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 16:14:40,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:40,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 16:14:40,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-15 16:14:40,659 INFO L87 Difference]: Start difference. First operand 54 states and 100 transitions. Second operand 13 states. [2020-10-15 16:14:40,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:40,688 INFO L93 Difference]: Finished difference Result 55 states and 101 transitions. [2020-10-15 16:14:40,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 16:14:40,688 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-10-15 16:14:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:40,689 INFO L225 Difference]: With dead ends: 55 [2020-10-15 16:14:40,689 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 16:14:40,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-15 16:14:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 16:14:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-15 16:14:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 16:14:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-10-15 16:14:40,693 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 18 [2020-10-15 16:14:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:40,693 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-10-15 16:14:40,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 16:14:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-10-15 16:14:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 16:14:40,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:40,694 INFO L422 BasicCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:40,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-15 16:14:40,904 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:40,904 INFO L82 PathProgramCache]: Analyzing trace with hash -119035313, now seen corresponding path program 7 times [2020-10-15 16:14:40,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:40,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173957867] [2020-10-15 16:14:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:41,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173957867] [2020-10-15 16:14:41,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643617778] [2020-10-15 16:14:41,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:41,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 16:14:41,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:41,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:41,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-15 16:14:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201091101] [2020-10-15 16:14:41,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 16:14:41,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:41,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 16:14:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 16:14:41,126 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 14 states. [2020-10-15 16:14:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:41,159 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-10-15 16:14:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 16:14:41,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-10-15 16:14:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:41,160 INFO L225 Difference]: With dead ends: 56 [2020-10-15 16:14:41,160 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 16:14:41,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-15 16:14:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 16:14:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-15 16:14:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 16:14:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 102 transitions. [2020-10-15 16:14:41,164 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 102 transitions. Word has length 19 [2020-10-15 16:14:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:41,165 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 102 transitions. [2020-10-15 16:14:41,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 16:14:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-10-15 16:14:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 16:14:41,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:41,166 INFO L422 BasicCegarLoop]: trace histogram [11, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:41,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-15 16:14:41,376 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash -823815912, now seen corresponding path program 8 times [2020-10-15 16:14:41,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:41,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310298726] [2020-10-15 16:14:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:41,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310298726] [2020-10-15 16:14:41,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656461721] [2020-10-15 16:14:41,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:41,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:14:41,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:41,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-15 16:14:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:41,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:41,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-15 16:14:41,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065749022] [2020-10-15 16:14:41,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 16:14:41,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:41,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 16:14:41,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-15 16:14:41,585 INFO L87 Difference]: Start difference. First operand 56 states and 102 transitions. Second operand 15 states. [2020-10-15 16:14:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:41,624 INFO L93 Difference]: Finished difference Result 57 states and 103 transitions. [2020-10-15 16:14:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 16:14:41,625 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-10-15 16:14:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:41,626 INFO L225 Difference]: With dead ends: 57 [2020-10-15 16:14:41,626 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 16:14:41,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-15 16:14:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 16:14:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-15 16:14:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-15 16:14:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 103 transitions. [2020-10-15 16:14:41,631 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 103 transitions. Word has length 20 [2020-10-15 16:14:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:41,631 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 103 transitions. [2020-10-15 16:14:41,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 16:14:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 103 transitions. [2020-10-15 16:14:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 16:14:41,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:41,636 INFO L422 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:41,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-15 16:14:41,837 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1197178001, now seen corresponding path program 9 times [2020-10-15 16:14:41,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:41,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227343756] [2020-10-15 16:14:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:41,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227343756] [2020-10-15 16:14:41,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125734709] [2020-10-15 16:14:41,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:42,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-15 16:14:42,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-15 16:14:42,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:42,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:42,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-15 16:14:42,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618232856] [2020-10-15 16:14:42,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 16:14:42,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:42,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 16:14:42,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 16:14:42,146 INFO L87 Difference]: Start difference. First operand 57 states and 103 transitions. Second operand 16 states. [2020-10-15 16:14:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:42,184 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-10-15 16:14:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 16:14:42,185 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 16:14:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:42,186 INFO L225 Difference]: With dead ends: 58 [2020-10-15 16:14:42,186 INFO L226 Difference]: Without dead ends: 58 [2020-10-15 16:14:42,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-15 16:14:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-15 16:14:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-15 16:14:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 16:14:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 104 transitions. [2020-10-15 16:14:42,189 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 104 transitions. Word has length 21 [2020-10-15 16:14:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:42,190 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 104 transitions. [2020-10-15 16:14:42,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 16:14:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2020-10-15 16:14:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 16:14:42,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:42,191 INFO L422 BasicCegarLoop]: trace histogram [13, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:42,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:42,401 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:42,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:42,401 INFO L82 PathProgramCache]: Analyzing trace with hash 113499128, now seen corresponding path program 10 times [2020-10-15 16:14:42,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:42,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638616580] [2020-10-15 16:14:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:42,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638616580] [2020-10-15 16:14:42,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856045923] [2020-10-15 16:14:42,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:42,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:14:42,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:42,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-15 16:14:42,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:42,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:42,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-15 16:14:42,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268182580] [2020-10-15 16:14:42,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 16:14:42,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:42,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 16:14:42,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 16:14:42,637 INFO L87 Difference]: Start difference. First operand 58 states and 104 transitions. Second operand 17 states. [2020-10-15 16:14:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:42,670 INFO L93 Difference]: Finished difference Result 59 states and 105 transitions. [2020-10-15 16:14:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 16:14:42,671 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2020-10-15 16:14:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:42,672 INFO L225 Difference]: With dead ends: 59 [2020-10-15 16:14:42,672 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 16:14:42,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-15 16:14:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 16:14:42,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 16:14:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 16:14:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 105 transitions. [2020-10-15 16:14:42,677 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 105 transitions. Word has length 22 [2020-10-15 16:14:42,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:42,677 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 105 transitions. [2020-10-15 16:14:42,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 16:14:42,678 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 105 transitions. [2020-10-15 16:14:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 16:14:42,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:42,680 INFO L422 BasicCegarLoop]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:42,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-15 16:14:42,889 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:42,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2089784463, now seen corresponding path program 11 times [2020-10-15 16:14:42,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:42,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585695923] [2020-10-15 16:14:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:43,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585695923] [2020-10-15 16:14:43,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818989117] [2020-10-15 16:14:43,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:43,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-15 16:14:43,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:43,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-15 16:14:43,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:43,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:43,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-15 16:14:43,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58873830] [2020-10-15 16:14:43,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 16:14:43,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 16:14:43,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 16:14:43,288 INFO L87 Difference]: Start difference. First operand 59 states and 105 transitions. Second operand 18 states. [2020-10-15 16:14:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:43,331 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-10-15 16:14:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 16:14:43,332 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2020-10-15 16:14:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:43,333 INFO L225 Difference]: With dead ends: 60 [2020-10-15 16:14:43,333 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 16:14:43,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-15 16:14:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 16:14:43,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-15 16:14:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-15 16:14:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 106 transitions. [2020-10-15 16:14:43,337 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 106 transitions. Word has length 23 [2020-10-15 16:14:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:43,337 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 106 transitions. [2020-10-15 16:14:43,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 16:14:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-10-15 16:14:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 16:14:43,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:43,339 INFO L422 BasicCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:43,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-15 16:14:43,550 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1069879592, now seen corresponding path program 12 times [2020-10-15 16:14:43,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:43,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984703162] [2020-10-15 16:14:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:43,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984703162] [2020-10-15 16:14:43,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666847057] [2020-10-15 16:14:43,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:44,458 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-15 16:14:44,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:44,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-15 16:14:44,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:44,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:44,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-15 16:14:44,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137157257] [2020-10-15 16:14:44,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 16:14:44,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:44,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 16:14:44,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-15 16:14:44,493 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 19 states. [2020-10-15 16:14:44,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:44,526 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-10-15 16:14:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 16:14:44,526 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-10-15 16:14:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:44,527 INFO L225 Difference]: With dead ends: 61 [2020-10-15 16:14:44,527 INFO L226 Difference]: Without dead ends: 61 [2020-10-15 16:14:44,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-15 16:14:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-15 16:14:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-15 16:14:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 16:14:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 107 transitions. [2020-10-15 16:14:44,530 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 107 transitions. Word has length 24 [2020-10-15 16:14:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:44,530 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 107 transitions. [2020-10-15 16:14:44,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 16:14:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-10-15 16:14:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 16:14:44,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:44,531 INFO L422 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:44,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 16:14:44,732 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:44,733 INFO L82 PathProgramCache]: Analyzing trace with hash -235217489, now seen corresponding path program 13 times [2020-10-15 16:14:44,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:44,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064023107] [2020-10-15 16:14:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:44,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064023107] [2020-10-15 16:14:44,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998934031] [2020-10-15 16:14:44,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:44,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-15 16:14:44,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:45,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:45,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-15 16:14:45,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349997541] [2020-10-15 16:14:45,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 16:14:45,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:45,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 16:14:45,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 16:14:45,004 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 20 states. [2020-10-15 16:14:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:45,034 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-15 16:14:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 16:14:45,035 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2020-10-15 16:14:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:45,036 INFO L225 Difference]: With dead ends: 62 [2020-10-15 16:14:45,036 INFO L226 Difference]: Without dead ends: 62 [2020-10-15 16:14:45,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-15 16:14:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-15 16:14:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-15 16:14:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-15 16:14:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2020-10-15 16:14:45,039 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 25 [2020-10-15 16:14:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:45,040 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2020-10-15 16:14:45,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 16:14:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2020-10-15 16:14:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 16:14:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:45,041 INFO L422 BasicCegarLoop]: trace histogram [17, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:45,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:45,251 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -130496072, now seen corresponding path program 14 times [2020-10-15 16:14:45,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:45,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683326224] [2020-10-15 16:14:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:45,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683326224] [2020-10-15 16:14:45,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612921652] [2020-10-15 16:14:45,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:45,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:14:45,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:45,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-15 16:14:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:45,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:45,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-15 16:14:45,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497857233] [2020-10-15 16:14:45,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 16:14:45,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:45,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 16:14:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-15 16:14:45,540 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand 21 states. [2020-10-15 16:14:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:45,575 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2020-10-15 16:14:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 16:14:45,576 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 26 [2020-10-15 16:14:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:45,576 INFO L225 Difference]: With dead ends: 63 [2020-10-15 16:14:45,576 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 16:14:45,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-15 16:14:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 16:14:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-15 16:14:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 16:14:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 109 transitions. [2020-10-15 16:14:45,579 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 109 transitions. Word has length 26 [2020-10-15 16:14:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:45,580 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 109 transitions. [2020-10-15 16:14:45,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 16:14:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 109 transitions. [2020-10-15 16:14:45,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 16:14:45,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:45,581 INFO L422 BasicCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:45,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:45,781 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:45,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1179099441, now seen corresponding path program 15 times [2020-10-15 16:14:45,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:45,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401688008] [2020-10-15 16:14:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:46,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401688008] [2020-10-15 16:14:46,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345178089] [2020-10-15 16:14:46,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:46,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-15 16:14:46,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:46,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-15 16:14:46,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:46,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:46,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-15 16:14:46,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087430148] [2020-10-15 16:14:46,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 16:14:46,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:46,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 16:14:46,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-15 16:14:46,503 INFO L87 Difference]: Start difference. First operand 63 states and 109 transitions. Second operand 22 states. [2020-10-15 16:14:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:46,545 INFO L93 Difference]: Finished difference Result 64 states and 110 transitions. [2020-10-15 16:14:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 16:14:46,545 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 27 [2020-10-15 16:14:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:46,546 INFO L225 Difference]: With dead ends: 64 [2020-10-15 16:14:46,546 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 16:14:46,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-15 16:14:46,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 16:14:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-15 16:14:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 16:14:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 110 transitions. [2020-10-15 16:14:46,550 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 110 transitions. Word has length 27 [2020-10-15 16:14:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:46,551 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 110 transitions. [2020-10-15 16:14:46,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 16:14:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 110 transitions. [2020-10-15 16:14:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 16:14:46,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:46,552 INFO L422 BasicCegarLoop]: trace histogram [19, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:46,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-15 16:14:46,763 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash 673934488, now seen corresponding path program 16 times [2020-10-15 16:14:46,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:46,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037175063] [2020-10-15 16:14:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:47,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037175063] [2020-10-15 16:14:47,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376779898] [2020-10-15 16:14:47,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:47,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:14:47,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:47,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-15 16:14:47,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:47,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:47,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-15 16:14:47,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28221502] [2020-10-15 16:14:47,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 16:14:47,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 16:14:47,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 16:14:47,121 INFO L87 Difference]: Start difference. First operand 64 states and 110 transitions. Second operand 23 states. [2020-10-15 16:14:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:47,153 INFO L93 Difference]: Finished difference Result 65 states and 111 transitions. [2020-10-15 16:14:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 16:14:47,153 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2020-10-15 16:14:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:47,154 INFO L225 Difference]: With dead ends: 65 [2020-10-15 16:14:47,154 INFO L226 Difference]: Without dead ends: 65 [2020-10-15 16:14:47,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-15 16:14:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-15 16:14:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-15 16:14:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 16:14:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-15 16:14:47,158 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 28 [2020-10-15 16:14:47,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:47,158 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-15 16:14:47,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 16:14:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-15 16:14:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 16:14:47,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:47,159 INFO L422 BasicCegarLoop]: trace histogram [20, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:47,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-15 16:14:47,368 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash -2011555857, now seen corresponding path program 17 times [2020-10-15 16:14:47,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:47,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916494372] [2020-10-15 16:14:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:47,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916494372] [2020-10-15 16:14:47,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282849356] [2020-10-15 16:14:47,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:47,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-15 16:14:47,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:47,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-15 16:14:47,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:48,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:48,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-15 16:14:48,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801999725] [2020-10-15 16:14:48,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 16:14:48,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:48,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 16:14:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-15 16:14:48,008 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 24 states. [2020-10-15 16:14:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:48,044 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-15 16:14:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 16:14:48,044 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 29 [2020-10-15 16:14:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:48,045 INFO L225 Difference]: With dead ends: 66 [2020-10-15 16:14:48,045 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 16:14:48,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-15 16:14:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 16:14:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-15 16:14:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-15 16:14:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2020-10-15 16:14:48,049 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 112 transitions. Word has length 29 [2020-10-15 16:14:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:48,050 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 112 transitions. [2020-10-15 16:14:48,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 16:14:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 112 transitions. [2020-10-15 16:14:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 16:14:48,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:48,051 INFO L422 BasicCegarLoop]: trace histogram [21, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:48,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:48,260 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:48,260 INFO L82 PathProgramCache]: Analyzing trace with hash 637589368, now seen corresponding path program 18 times [2020-10-15 16:14:48,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:48,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121854247] [2020-10-15 16:14:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:48,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121854247] [2020-10-15 16:14:48,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39382199] [2020-10-15 16:14:48,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:48,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-15 16:14:48,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:48,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-15 16:14:48,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:48,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:48,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-10-15 16:14:48,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406360008] [2020-10-15 16:14:48,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 16:14:48,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 16:14:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-15 16:14:48,979 INFO L87 Difference]: Start difference. First operand 66 states and 112 transitions. Second operand 25 states. [2020-10-15 16:14:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:49,014 INFO L93 Difference]: Finished difference Result 67 states and 113 transitions. [2020-10-15 16:14:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 16:14:49,016 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 30 [2020-10-15 16:14:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:49,016 INFO L225 Difference]: With dead ends: 67 [2020-10-15 16:14:49,017 INFO L226 Difference]: Without dead ends: 67 [2020-10-15 16:14:49,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-15 16:14:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-15 16:14:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-15 16:14:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 16:14:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 113 transitions. [2020-10-15 16:14:49,020 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 113 transitions. Word has length 30 [2020-10-15 16:14:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:49,020 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 113 transitions. [2020-10-15 16:14:49,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 16:14:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 113 transitions. [2020-10-15 16:14:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 16:14:49,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:49,021 INFO L422 BasicCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:49,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-15 16:14:49,231 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1156712719, now seen corresponding path program 19 times [2020-10-15 16:14:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:49,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735170549] [2020-10-15 16:14:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:49,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735170549] [2020-10-15 16:14:49,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964442310] [2020-10-15 16:14:49,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:49,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-15 16:14:49,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:49,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:49,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-10-15 16:14:49,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821909307] [2020-10-15 16:14:49,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 16:14:49,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:49,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 16:14:49,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-15 16:14:49,835 INFO L87 Difference]: Start difference. First operand 67 states and 113 transitions. Second operand 26 states. [2020-10-15 16:14:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:49,892 INFO L93 Difference]: Finished difference Result 68 states and 114 transitions. [2020-10-15 16:14:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 16:14:49,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 31 [2020-10-15 16:14:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:49,894 INFO L225 Difference]: With dead ends: 68 [2020-10-15 16:14:49,894 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 16:14:49,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-15 16:14:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 16:14:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 16:14:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 16:14:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 114 transitions. [2020-10-15 16:14:49,898 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 114 transitions. Word has length 31 [2020-10-15 16:14:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:49,899 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 114 transitions. [2020-10-15 16:14:49,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 16:14:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-10-15 16:14:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 16:14:49,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:49,900 INFO L422 BasicCegarLoop]: trace histogram [23, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:50,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:50,111 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash 69667416, now seen corresponding path program 20 times [2020-10-15 16:14:50,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:50,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778641311] [2020-10-15 16:14:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:50,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778641311] [2020-10-15 16:14:50,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724694534] [2020-10-15 16:14:50,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:50,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:14:50,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:50,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-15 16:14:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:50,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:50,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-10-15 16:14:50,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070272547] [2020-10-15 16:14:50,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 16:14:50,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:50,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 16:14:50,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-15 16:14:50,591 INFO L87 Difference]: Start difference. First operand 68 states and 114 transitions. Second operand 27 states. [2020-10-15 16:14:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:50,648 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2020-10-15 16:14:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 16:14:50,649 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2020-10-15 16:14:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:50,650 INFO L225 Difference]: With dead ends: 69 [2020-10-15 16:14:50,650 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 16:14:50,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-15 16:14:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 16:14:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-15 16:14:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 16:14:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 115 transitions. [2020-10-15 16:14:50,655 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 115 transitions. Word has length 32 [2020-10-15 16:14:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:50,656 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 115 transitions. [2020-10-15 16:14:50,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 16:14:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 115 transitions. [2020-10-15 16:14:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 16:14:50,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:50,657 INFO L422 BasicCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:50,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-15 16:14:50,871 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:50,872 INFO L82 PathProgramCache]: Analyzing trace with hash 731001391, now seen corresponding path program 21 times [2020-10-15 16:14:50,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:50,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767219668] [2020-10-15 16:14:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:51,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767219668] [2020-10-15 16:14:51,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911107064] [2020-10-15 16:14:51,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:53,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-15 16:14:53,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:53,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-15 16:14:53,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:53,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:53,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-10-15 16:14:53,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54312201] [2020-10-15 16:14:53,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 16:14:53,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 16:14:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-15 16:14:53,696 INFO L87 Difference]: Start difference. First operand 69 states and 115 transitions. Second operand 28 states. [2020-10-15 16:14:53,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:53,741 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-10-15 16:14:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 16:14:53,743 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2020-10-15 16:14:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:53,743 INFO L225 Difference]: With dead ends: 70 [2020-10-15 16:14:53,743 INFO L226 Difference]: Without dead ends: 70 [2020-10-15 16:14:53,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-15 16:14:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-15 16:14:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-15 16:14:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 16:14:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 116 transitions. [2020-10-15 16:14:53,747 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 116 transitions. Word has length 33 [2020-10-15 16:14:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:53,747 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 116 transitions. [2020-10-15 16:14:53,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 16:14:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 116 transitions. [2020-10-15 16:14:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 16:14:53,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:53,748 INFO L422 BasicCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:53,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-15 16:14:53,948 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash -242481864, now seen corresponding path program 22 times [2020-10-15 16:14:53,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:53,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718232047] [2020-10-15 16:14:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718232047] [2020-10-15 16:14:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332740062] [2020-10-15 16:14:54,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:54,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:14:54,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:54,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-15 16:14:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:54,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:54,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-10-15 16:14:54,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267127008] [2020-10-15 16:14:54,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 16:14:54,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:54,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 16:14:54,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-15 16:14:54,510 INFO L87 Difference]: Start difference. First operand 70 states and 116 transitions. Second operand 29 states. [2020-10-15 16:14:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:54,547 INFO L93 Difference]: Finished difference Result 71 states and 117 transitions. [2020-10-15 16:14:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 16:14:54,548 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 34 [2020-10-15 16:14:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:54,549 INFO L225 Difference]: With dead ends: 71 [2020-10-15 16:14:54,549 INFO L226 Difference]: Without dead ends: 71 [2020-10-15 16:14:54,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-15 16:14:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-15 16:14:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-15 16:14:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 16:14:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 117 transitions. [2020-10-15 16:14:54,554 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 117 transitions. Word has length 34 [2020-10-15 16:14:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:54,554 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 117 transitions. [2020-10-15 16:14:54,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 16:14:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 117 transitions. [2020-10-15 16:14:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 16:14:54,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:54,555 INFO L422 BasicCegarLoop]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:54,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-15 16:14:54,764 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:54,764 INFO L82 PathProgramCache]: Analyzing trace with hash -355691697, now seen corresponding path program 23 times [2020-10-15 16:14:54,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:54,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492828135] [2020-10-15 16:14:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:55,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492828135] [2020-10-15 16:14:55,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365917896] [2020-10-15 16:14:55,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:14:55,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-10-15 16:14:55,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:14:55,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-15 16:14:55,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:14:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:55,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:14:55,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-10-15 16:14:55,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933351489] [2020-10-15 16:14:55,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 16:14:55,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:14:55,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 16:14:55,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-15 16:14:55,962 INFO L87 Difference]: Start difference. First operand 71 states and 117 transitions. Second operand 30 states. [2020-10-15 16:14:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:14:56,004 INFO L93 Difference]: Finished difference Result 72 states and 118 transitions. [2020-10-15 16:14:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 16:14:56,005 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 35 [2020-10-15 16:14:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:14:56,006 INFO L225 Difference]: With dead ends: 72 [2020-10-15 16:14:56,006 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 16:14:56,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-15 16:14:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 16:14:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-15 16:14:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 16:14:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 118 transitions. [2020-10-15 16:14:56,011 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 118 transitions. Word has length 35 [2020-10-15 16:14:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:14:56,011 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 118 transitions. [2020-10-15 16:14:56,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 16:14:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 118 transitions. [2020-10-15 16:14:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 16:14:56,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:14:56,012 INFO L422 BasicCegarLoop]: trace histogram [27, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:14:56,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-15 16:14:56,213 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:14:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:14:56,213 INFO L82 PathProgramCache]: Analyzing trace with hash 429770776, now seen corresponding path program 24 times [2020-10-15 16:14:56,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:14:56,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363966631] [2020-10-15 16:14:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:14:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:14:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:14:56,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363966631] [2020-10-15 16:14:56,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041674696] [2020-10-15 16:14:56,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:01,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-15 16:15:01,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:15:01,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-15 16:15:01,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:15:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:01,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:15:01,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-10-15 16:15:01,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870115307] [2020-10-15 16:15:01,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 16:15:01,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:15:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 16:15:01,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-15 16:15:01,060 INFO L87 Difference]: Start difference. First operand 72 states and 118 transitions. Second operand 31 states. [2020-10-15 16:15:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:15:01,119 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-15 16:15:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 16:15:01,120 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 36 [2020-10-15 16:15:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:15:01,120 INFO L225 Difference]: With dead ends: 73 [2020-10-15 16:15:01,120 INFO L226 Difference]: Without dead ends: 73 [2020-10-15 16:15:01,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-15 16:15:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-15 16:15:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-15 16:15:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 16:15:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 119 transitions. [2020-10-15 16:15:01,124 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 119 transitions. Word has length 36 [2020-10-15 16:15:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:15:01,124 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 119 transitions. [2020-10-15 16:15:01,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 16:15:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2020-10-15 16:15:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 16:15:01,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:15:01,125 INFO L422 BasicCegarLoop]: trace histogram [28, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:15:01,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:01,335 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:15:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:15:01,335 INFO L82 PathProgramCache]: Analyzing trace with hash -990696337, now seen corresponding path program 25 times [2020-10-15 16:15:01,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:15:01,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842429121] [2020-10-15 16:15:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:15:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:01,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842429121] [2020-10-15 16:15:01,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695950073] [2020-10-15 16:15:01,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:01,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-15 16:15:01,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:15:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:02,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:15:02,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-10-15 16:15:02,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535482182] [2020-10-15 16:15:02,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 16:15:02,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:15:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 16:15:02,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-15 16:15:02,002 INFO L87 Difference]: Start difference. First operand 73 states and 119 transitions. Second operand 32 states. [2020-10-15 16:15:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:15:02,046 INFO L93 Difference]: Finished difference Result 74 states and 120 transitions. [2020-10-15 16:15:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 16:15:02,046 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 37 [2020-10-15 16:15:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:15:02,047 INFO L225 Difference]: With dead ends: 74 [2020-10-15 16:15:02,047 INFO L226 Difference]: Without dead ends: 74 [2020-10-15 16:15:02,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-15 16:15:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-15 16:15:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-15 16:15:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-15 16:15:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 120 transitions. [2020-10-15 16:15:02,051 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 120 transitions. Word has length 37 [2020-10-15 16:15:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:15:02,051 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 120 transitions. [2020-10-15 16:15:02,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 16:15:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2020-10-15 16:15:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 16:15:02,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:15:02,052 INFO L422 BasicCegarLoop]: trace histogram [29, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:15:02,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:02,264 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:15:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:15:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2075503880, now seen corresponding path program 26 times [2020-10-15 16:15:02,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:15:02,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959820548] [2020-10-15 16:15:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:15:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:02,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959820548] [2020-10-15 16:15:02,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320050113] [2020-10-15 16:15:02,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:02,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:15:02,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:15:02,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-15 16:15:02,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:15:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:02,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:15:02,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2020-10-15 16:15:02,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162312444] [2020-10-15 16:15:02,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 16:15:02,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:15:02,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 16:15:02,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 16:15:02,900 INFO L87 Difference]: Start difference. First operand 74 states and 120 transitions. Second operand 33 states. [2020-10-15 16:15:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:15:02,942 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2020-10-15 16:15:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 16:15:02,942 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 38 [2020-10-15 16:15:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:15:02,943 INFO L225 Difference]: With dead ends: 75 [2020-10-15 16:15:02,943 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 16:15:02,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 16:15:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 16:15:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-15 16:15:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 16:15:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 121 transitions. [2020-10-15 16:15:02,947 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 121 transitions. Word has length 38 [2020-10-15 16:15:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:15:02,947 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 121 transitions. [2020-10-15 16:15:02,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 16:15:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 121 transitions. [2020-10-15 16:15:02,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 16:15:02,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:15:02,948 INFO L422 BasicCegarLoop]: trace histogram [30, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:15:03,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:03,158 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:15:03,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:15:03,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1344799345, now seen corresponding path program 27 times [2020-10-15 16:15:03,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:15:03,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254420441] [2020-10-15 16:15:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:15:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:03,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254420441] [2020-10-15 16:15:03,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037300407] [2020-10-15 16:15:03,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:17,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-15 16:15:17,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:15:17,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-15 16:15:17,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:15:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:17,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:15:17,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-10-15 16:15:17,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489808877] [2020-10-15 16:15:17,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 16:15:17,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:15:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 16:15:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 16:15:17,825 INFO L87 Difference]: Start difference. First operand 75 states and 121 transitions. Second operand 34 states. [2020-10-15 16:15:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:15:17,865 INFO L93 Difference]: Finished difference Result 76 states and 122 transitions. [2020-10-15 16:15:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 16:15:17,866 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2020-10-15 16:15:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:15:17,867 INFO L225 Difference]: With dead ends: 76 [2020-10-15 16:15:17,867 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 16:15:17,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 16:15:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 16:15:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-15 16:15:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 16:15:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 122 transitions. [2020-10-15 16:15:17,870 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 122 transitions. Word has length 39 [2020-10-15 16:15:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:15:17,870 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 122 transitions. [2020-10-15 16:15:17,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 16:15:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 122 transitions. [2020-10-15 16:15:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 16:15:17,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:15:17,871 INFO L422 BasicCegarLoop]: trace histogram [31, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:15:18,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-15 16:15:18,083 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:15:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:15:18,083 INFO L82 PathProgramCache]: Analyzing trace with hash -167795240, now seen corresponding path program 28 times [2020-10-15 16:15:18,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:15:18,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312075729] [2020-10-15 16:15:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:15:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:18,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312075729] [2020-10-15 16:15:18,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9528364] [2020-10-15 16:15:18,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:18,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:15:18,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:15:18,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-15 16:15:18,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:15:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:18,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:15:18,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-10-15 16:15:18,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558157485] [2020-10-15 16:15:18,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 16:15:18,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:15:18,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 16:15:18,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 16:15:18,760 INFO L87 Difference]: Start difference. First operand 76 states and 122 transitions. Second operand 35 states. [2020-10-15 16:15:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:15:18,817 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-10-15 16:15:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 16:15:18,817 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 40 [2020-10-15 16:15:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:15:18,818 INFO L225 Difference]: With dead ends: 77 [2020-10-15 16:15:18,818 INFO L226 Difference]: Without dead ends: 77 [2020-10-15 16:15:18,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 16:15:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-15 16:15:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-15 16:15:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 16:15:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2020-10-15 16:15:18,822 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 40 [2020-10-15 16:15:18,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:15:18,822 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 123 transitions. [2020-10-15 16:15:18,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 16:15:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions. [2020-10-15 16:15:18,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 16:15:18,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:15:18,823 INFO L422 BasicCegarLoop]: trace histogram [32, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:15:19,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:19,024 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:15:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:15:19,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1959593647, now seen corresponding path program 29 times [2020-10-15 16:15:19,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:15:19,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287450577] [2020-10-15 16:15:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:15:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:19,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287450577] [2020-10-15 16:15:19,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309031693] [2020-10-15 16:15:19,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:15:29,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-15 16:15:29,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:15:29,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-15 16:15:29,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:15:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:29,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:15:29,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2020-10-15 16:15:29,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197377789] [2020-10-15 16:15:29,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 16:15:29,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:15:29,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 16:15:29,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 16:15:29,150 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. Second operand 36 states. [2020-10-15 16:15:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:15:29,208 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2020-10-15 16:15:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 16:15:29,208 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 41 [2020-10-15 16:15:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:15:29,209 INFO L225 Difference]: With dead ends: 78 [2020-10-15 16:15:29,209 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 16:15:29,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 16:15:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 16:15:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-15 16:15:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-15 16:15:29,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions. [2020-10-15 16:15:29,212 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 41 [2020-10-15 16:15:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:15:29,212 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 124 transitions. [2020-10-15 16:15:29,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 16:15:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions. [2020-10-15 16:15:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 16:15:29,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:15:29,213 INFO L422 BasicCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:15:29,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-15 16:15:29,422 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:15:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:15:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash -810827592, now seen corresponding path program 30 times [2020-10-15 16:15:29,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:15:29,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809002794] [2020-10-15 16:15:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:15:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:15:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:15:30,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809002794] [2020-10-15 16:15:30,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347292397] [2020-10-15 16:15:30,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:13,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-10-15 16:16:13,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:16:13,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-15 16:16:13,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:16:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:13,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:16:13,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-10-15 16:16:13,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133087690] [2020-10-15 16:16:13,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 16:16:13,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:16:13,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 16:16:13,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 16:16:13,944 INFO L87 Difference]: Start difference. First operand 78 states and 124 transitions. Second operand 37 states. [2020-10-15 16:16:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:16:13,999 INFO L93 Difference]: Finished difference Result 79 states and 125 transitions. [2020-10-15 16:16:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 16:16:14,004 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 42 [2020-10-15 16:16:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:16:14,005 INFO L225 Difference]: With dead ends: 79 [2020-10-15 16:16:14,005 INFO L226 Difference]: Without dead ends: 79 [2020-10-15 16:16:14,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 16:16:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-15 16:16:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-15 16:16:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 16:16:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2020-10-15 16:16:14,009 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 42 [2020-10-15 16:16:14,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:16:14,009 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2020-10-15 16:16:14,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 16:16:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2020-10-15 16:16:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 16:16:14,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:16:14,010 INFO L422 BasicCegarLoop]: trace histogram [34, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:16:14,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:14,221 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:16:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:16:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash -794540081, now seen corresponding path program 31 times [2020-10-15 16:16:14,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:16:14,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82912714] [2020-10-15 16:16:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:16:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:14,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82912714] [2020-10-15 16:16:14,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437240003] [2020-10-15 16:16:14,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:15,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-15 16:16:15,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:16:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:15,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:16:15,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-10-15 16:16:15,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326398618] [2020-10-15 16:16:15,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 16:16:15,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:16:15,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 16:16:15,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 16:16:15,058 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand 38 states. [2020-10-15 16:16:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:16:15,114 INFO L93 Difference]: Finished difference Result 80 states and 126 transitions. [2020-10-15 16:16:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 16:16:15,115 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 43 [2020-10-15 16:16:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:16:15,116 INFO L225 Difference]: With dead ends: 80 [2020-10-15 16:16:15,116 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 16:16:15,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 16:16:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 16:16:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 16:16:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 16:16:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2020-10-15 16:16:15,120 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 43 [2020-10-15 16:16:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:16:15,121 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2020-10-15 16:16:15,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 16:16:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2020-10-15 16:16:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 16:16:15,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:16:15,121 INFO L422 BasicCegarLoop]: trace histogram [35, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:16:15,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-15 16:16:15,333 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:16:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:16:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -289627240, now seen corresponding path program 32 times [2020-10-15 16:16:15,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:16:15,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788113467] [2020-10-15 16:16:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:16:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:16,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788113467] [2020-10-15 16:16:16,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334071686] [2020-10-15 16:16:16,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:16,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:16:16,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:16:16,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-15 16:16:16,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:16:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:16,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:16:16,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2020-10-15 16:16:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112054540] [2020-10-15 16:16:16,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 16:16:16,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:16:16,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 16:16:16,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 16:16:16,176 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand 39 states. [2020-10-15 16:16:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:16:16,225 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2020-10-15 16:16:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 16:16:16,226 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 44 [2020-10-15 16:16:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:16:16,227 INFO L225 Difference]: With dead ends: 81 [2020-10-15 16:16:16,227 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 16:16:16,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 16:16:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 16:16:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-15 16:16:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 16:16:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2020-10-15 16:16:16,230 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 44 [2020-10-15 16:16:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:16:16,230 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2020-10-15 16:16:16,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-15 16:16:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2020-10-15 16:16:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 16:16:16,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:16:16,231 INFO L422 BasicCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:16:16,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-15 16:16:16,439 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:16:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:16:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1817198353, now seen corresponding path program 33 times [2020-10-15 16:16:16,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:16:16,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629541781] [2020-10-15 16:16:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:16:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:17,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629541781] [2020-10-15 16:16:17,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754852594] [2020-10-15 16:16:17,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:36,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-10-15 16:16:36,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:16:37,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-15 16:16:37,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:16:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:37,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:16:37,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2020-10-15 16:16:37,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304868925] [2020-10-15 16:16:37,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-15 16:16:37,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:16:37,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-15 16:16:37,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 16:16:37,148 INFO L87 Difference]: Start difference. First operand 81 states and 127 transitions. Second operand 40 states. [2020-10-15 16:16:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:16:37,210 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-10-15 16:16:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 16:16:37,211 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 45 [2020-10-15 16:16:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:16:37,212 INFO L225 Difference]: With dead ends: 82 [2020-10-15 16:16:37,212 INFO L226 Difference]: Without dead ends: 82 [2020-10-15 16:16:37,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 16:16:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-15 16:16:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-15 16:16:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 16:16:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 128 transitions. [2020-10-15 16:16:37,216 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 128 transitions. Word has length 45 [2020-10-15 16:16:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:16:37,216 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 128 transitions. [2020-10-15 16:16:37,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-15 16:16:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2020-10-15 16:16:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 16:16:37,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:16:37,217 INFO L422 BasicCegarLoop]: trace histogram [37, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:16:37,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-15 16:16:37,428 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:16:37,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:16:37,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1927262600, now seen corresponding path program 34 times [2020-10-15 16:16:37,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:16:37,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698208186] [2020-10-15 16:16:37,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:16:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:38,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698208186] [2020-10-15 16:16:38,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396099821] [2020-10-15 16:16:38,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:38,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:16:38,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:16:38,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-15 16:16:38,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:16:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:38,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:16:38,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2020-10-15 16:16:38,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623289450] [2020-10-15 16:16:38,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-15 16:16:38,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:16:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-15 16:16:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 16:16:38,350 INFO L87 Difference]: Start difference. First operand 82 states and 128 transitions. Second operand 41 states. [2020-10-15 16:16:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:16:38,413 INFO L93 Difference]: Finished difference Result 83 states and 129 transitions. [2020-10-15 16:16:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 16:16:38,413 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 46 [2020-10-15 16:16:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:16:38,414 INFO L225 Difference]: With dead ends: 83 [2020-10-15 16:16:38,414 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 16:16:38,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 16:16:38,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 16:16:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-15 16:16:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 16:16:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2020-10-15 16:16:38,416 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 46 [2020-10-15 16:16:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:16:38,417 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2020-10-15 16:16:38,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-15 16:16:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2020-10-15 16:16:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 16:16:38,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:16:38,417 INFO L422 BasicCegarLoop]: trace histogram [38, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:16:38,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-15 16:16:38,618 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:16:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:16:38,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1044286961, now seen corresponding path program 35 times [2020-10-15 16:16:38,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:16:38,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835772835] [2020-10-15 16:16:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:16:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:39,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835772835] [2020-10-15 16:16:39,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013179669] [2020-10-15 16:16:39,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:56,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2020-10-15 16:16:56,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:16:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-15 16:16:56,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:16:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:56,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:16:56,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2020-10-15 16:16:56,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470943946] [2020-10-15 16:16:56,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-15 16:16:56,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:16:56,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-15 16:16:56,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 16:16:56,749 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand 42 states. [2020-10-15 16:16:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:16:56,847 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2020-10-15 16:16:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 16:16:56,848 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2020-10-15 16:16:56,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:16:56,849 INFO L225 Difference]: With dead ends: 84 [2020-10-15 16:16:56,849 INFO L226 Difference]: Without dead ends: 84 [2020-10-15 16:16:56,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 16:16:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-15 16:16:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-15 16:16:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-15 16:16:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-10-15 16:16:56,853 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 47 [2020-10-15 16:16:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:16:56,853 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-10-15 16:16:56,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-15 16:16:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-10-15 16:16:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-15 16:16:56,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:16:56,854 INFO L422 BasicCegarLoop]: trace histogram [39, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:16:57,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:16:57,055 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:16:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:16:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash 558154072, now seen corresponding path program 36 times [2020-10-15 16:16:57,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:16:57,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942349497] [2020-10-15 16:16:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:16:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:16:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:16:58,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942349497] [2020-10-15 16:16:58,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596225511] [2020-10-15 16:16:58,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:48,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-10-15 16:17:48,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:17:48,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-15 16:17:48,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:17:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:48,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:17:48,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2020-10-15 16:17:48,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676118994] [2020-10-15 16:17:48,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-15 16:17:48,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:17:48,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-15 16:17:48,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 16:17:48,805 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand 43 states. [2020-10-15 16:17:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:17:48,871 INFO L93 Difference]: Finished difference Result 85 states and 131 transitions. [2020-10-15 16:17:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-15 16:17:48,871 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 48 [2020-10-15 16:17:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:17:48,872 INFO L225 Difference]: With dead ends: 85 [2020-10-15 16:17:48,872 INFO L226 Difference]: Without dead ends: 85 [2020-10-15 16:17:48,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 16:17:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-15 16:17:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-15 16:17:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 16:17:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2020-10-15 16:17:48,877 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 48 [2020-10-15 16:17:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:17:48,877 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2020-10-15 16:17:48,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-15 16:17:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2020-10-15 16:17:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 16:17:48,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:17:48,878 INFO L422 BasicCegarLoop]: trace histogram [40, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:17:49,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-15 16:17:49,089 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:17:49,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:17:49,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1305781457, now seen corresponding path program 37 times [2020-10-15 16:17:49,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:17:49,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589185679] [2020-10-15 16:17:49,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:17:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:17:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589185679] [2020-10-15 16:17:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501602306] [2020-10-15 16:17:50,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:17:50,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 42 conjunts are in the unsatisfiable core [2020-10-15 16:17:50,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:17:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:50,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:17:50,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2020-10-15 16:17:50,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208122971] [2020-10-15 16:17:50,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-15 16:17:50,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:17:50,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-15 16:17:50,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 16:17:50,237 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand 44 states. [2020-10-15 16:17:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:17:50,301 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-10-15 16:17:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 16:17:50,301 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 49 [2020-10-15 16:17:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:17:50,302 INFO L225 Difference]: With dead ends: 86 [2020-10-15 16:17:50,302 INFO L226 Difference]: Without dead ends: 86 [2020-10-15 16:17:50,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 16:17:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-15 16:17:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-15 16:17:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-15 16:17:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2020-10-15 16:17:50,306 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 49 [2020-10-15 16:17:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:17:50,308 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2020-10-15 16:17:50,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-15 16:17:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2020-10-15 16:17:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 16:17:50,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:17:50,309 INFO L422 BasicCegarLoop]: trace histogram [41, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:17:50,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:50,519 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:17:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:17:50,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1041759288, now seen corresponding path program 38 times [2020-10-15 16:17:50,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:17:50,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104216927] [2020-10-15 16:17:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:17:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:17:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:51,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104216927] [2020-10-15 16:17:51,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89625127] [2020-10-15 16:17:51,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:51,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:17:51,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:17:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-15 16:17:51,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:17:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:51,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:17:51,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2020-10-15 16:17:51,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507419451] [2020-10-15 16:17:51,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-15 16:17:51,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:17:51,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-15 16:17:51,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 16:17:51,672 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand 45 states. [2020-10-15 16:17:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:17:51,730 INFO L93 Difference]: Finished difference Result 87 states and 133 transitions. [2020-10-15 16:17:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-15 16:17:51,731 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 50 [2020-10-15 16:17:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:17:51,732 INFO L225 Difference]: With dead ends: 87 [2020-10-15 16:17:51,732 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 16:17:51,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 16:17:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 16:17:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-15 16:17:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 16:17:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 133 transitions. [2020-10-15 16:17:51,735 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 133 transitions. Word has length 50 [2020-10-15 16:17:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:17:51,735 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 133 transitions. [2020-10-15 16:17:51,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-15 16:17:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 133 transitions. [2020-10-15 16:17:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 16:17:51,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:17:51,736 INFO L422 BasicCegarLoop]: trace histogram [42, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:17:51,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:51,945 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:17:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:17:51,946 INFO L82 PathProgramCache]: Analyzing trace with hash 801078351, now seen corresponding path program 39 times [2020-10-15 16:17:51,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:17:51,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254014662] [2020-10-15 16:17:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:17:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:17:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:52,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254014662] [2020-10-15 16:17:52,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502577470] [2020-10-15 16:17:52,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:56,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-10-15 16:17:56,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:17:56,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 44 conjunts are in the unsatisfiable core [2020-10-15 16:17:56,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:17:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:56,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:17:56,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2020-10-15 16:17:56,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321538686] [2020-10-15 16:17:56,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-15 16:17:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:17:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-15 16:17:56,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 16:17:56,635 INFO L87 Difference]: Start difference. First operand 87 states and 133 transitions. Second operand 46 states. [2020-10-15 16:17:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:17:56,715 INFO L93 Difference]: Finished difference Result 88 states and 134 transitions. [2020-10-15 16:17:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 16:17:56,715 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 51 [2020-10-15 16:17:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:17:56,716 INFO L225 Difference]: With dead ends: 88 [2020-10-15 16:17:56,716 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 16:17:56,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-15 16:17:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 16:17:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-15 16:17:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 16:17:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-10-15 16:17:56,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 51 [2020-10-15 16:17:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:17:56,720 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-10-15 16:17:56,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-15 16:17:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-10-15 16:17:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 16:17:56,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:17:56,721 INFO L422 BasicCegarLoop]: trace histogram [43, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:17:56,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-15 16:17:56,923 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:17:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:17:56,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1929903896, now seen corresponding path program 40 times [2020-10-15 16:17:56,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:17:56,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809749350] [2020-10-15 16:17:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:17:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:17:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:58,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809749350] [2020-10-15 16:17:58,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615033967] [2020-10-15 16:17:58,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:17:58,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:17:58,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:17:58,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-15 16:17:58,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:17:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:58,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:17:58,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2020-10-15 16:17:58,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480914843] [2020-10-15 16:17:58,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-15 16:17:58,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:17:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-15 16:17:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 16:17:58,123 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 47 states. [2020-10-15 16:17:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:17:58,205 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2020-10-15 16:17:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-15 16:17:58,206 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 52 [2020-10-15 16:17:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:17:58,207 INFO L225 Difference]: With dead ends: 89 [2020-10-15 16:17:58,207 INFO L226 Difference]: Without dead ends: 89 [2020-10-15 16:17:58,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 16:17:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-15 16:17:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-15 16:17:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-15 16:17:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 135 transitions. [2020-10-15 16:17:58,210 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 135 transitions. Word has length 52 [2020-10-15 16:17:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:17:58,211 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 135 transitions. [2020-10-15 16:17:58,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-15 16:17:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 135 transitions. [2020-10-15 16:17:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 16:17:58,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:17:58,211 INFO L422 BasicCegarLoop]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:17:58,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-15 16:17:58,423 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:17:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:17:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1731209873, now seen corresponding path program 41 times [2020-10-15 16:17:58,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:17:58,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640235273] [2020-10-15 16:17:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:17:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:17:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:17:59,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640235273] [2020-10-15 16:17:59,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349004779] [2020-10-15 16:17:59,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:18:52,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2020-10-15 16:18:52,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:18:53,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-15 16:18:53,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:18:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:18:53,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:18:53,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2020-10-15 16:18:53,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762031920] [2020-10-15 16:18:53,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-15 16:18:53,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:18:53,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-15 16:18:53,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 16:18:53,458 INFO L87 Difference]: Start difference. First operand 89 states and 135 transitions. Second operand 48 states. [2020-10-15 16:18:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:18:53,530 INFO L93 Difference]: Finished difference Result 90 states and 136 transitions. [2020-10-15 16:18:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-15 16:18:53,531 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 53 [2020-10-15 16:18:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:18:53,532 INFO L225 Difference]: With dead ends: 90 [2020-10-15 16:18:53,532 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 16:18:53,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-15 16:18:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 16:18:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-15 16:18:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 16:18:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 136 transitions. [2020-10-15 16:18:53,535 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 136 transitions. Word has length 53 [2020-10-15 16:18:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:18:53,536 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 136 transitions. [2020-10-15 16:18:53,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-15 16:18:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 136 transitions. [2020-10-15 16:18:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 16:18:53,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:18:53,537 INFO L422 BasicCegarLoop]: trace histogram [45, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:18:53,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-15 16:18:53,747 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:18:53,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:18:53,747 INFO L82 PathProgramCache]: Analyzing trace with hash 738380280, now seen corresponding path program 42 times [2020-10-15 16:18:53,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:18:53,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607076399] [2020-10-15 16:18:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:18:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:18:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:18:55,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607076399] [2020-10-15 16:18:55,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555306607] [2020-10-15 16:18:55,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:21:56,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2020-10-15 16:21:56,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:22:00,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-15 16:22:00,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:22:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:00,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:22:00,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2020-10-15 16:22:00,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42188380] [2020-10-15 16:22:00,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-15 16:22:00,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:22:00,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-15 16:22:00,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 16:22:00,200 INFO L87 Difference]: Start difference. First operand 90 states and 136 transitions. Second operand 49 states. [2020-10-15 16:22:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:22:00,283 INFO L93 Difference]: Finished difference Result 91 states and 137 transitions. [2020-10-15 16:22:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-15 16:22:00,284 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 54 [2020-10-15 16:22:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:22:00,285 INFO L225 Difference]: With dead ends: 91 [2020-10-15 16:22:00,285 INFO L226 Difference]: Without dead ends: 91 [2020-10-15 16:22:00,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 16:22:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-15 16:22:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-15 16:22:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 16:22:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 137 transitions. [2020-10-15 16:22:00,289 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 137 transitions. Word has length 54 [2020-10-15 16:22:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:22:00,290 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 137 transitions. [2020-10-15 16:22:00,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-15 16:22:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 137 transitions. [2020-10-15 16:22:00,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 16:22:00,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:22:00,291 INFO L422 BasicCegarLoop]: trace histogram [46, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:22:00,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:22:00,502 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:22:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:22:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash -13736305, now seen corresponding path program 43 times [2020-10-15 16:22:00,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:22:00,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500843110] [2020-10-15 16:22:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:22:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:22:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:01,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500843110] [2020-10-15 16:22:01,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831237742] [2020-10-15 16:22:01,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:22:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:22:01,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 48 conjunts are in the unsatisfiable core [2020-10-15 16:22:01,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:22:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:01,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:22:01,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2020-10-15 16:22:01,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242694704] [2020-10-15 16:22:01,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-15 16:22:01,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:22:01,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-15 16:22:01,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 16:22:01,988 INFO L87 Difference]: Start difference. First operand 91 states and 137 transitions. Second operand 50 states. [2020-10-15 16:22:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:22:02,072 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-10-15 16:22:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 16:22:02,077 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 55 [2020-10-15 16:22:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:22:02,078 INFO L225 Difference]: With dead ends: 92 [2020-10-15 16:22:02,078 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 16:22:02,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-15 16:22:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 16:22:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-15 16:22:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 16:22:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 138 transitions. [2020-10-15 16:22:02,082 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 138 transitions. Word has length 55 [2020-10-15 16:22:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:22:02,082 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 138 transitions. [2020-10-15 16:22:02,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-15 16:22:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 138 transitions. [2020-10-15 16:22:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 16:22:02,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:22:02,083 INFO L422 BasicCegarLoop]: trace histogram [47, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:22:02,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-15 16:22:02,295 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:22:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:22:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1854513960, now seen corresponding path program 44 times [2020-10-15 16:22:02,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:22:02,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373809868] [2020-10-15 16:22:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:22:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:22:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:03,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373809868] [2020-10-15 16:22:03,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570032860] [2020-10-15 16:22:03,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:22:03,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 16:22:03,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:22:03,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 49 conjunts are in the unsatisfiable core [2020-10-15 16:22:03,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:22:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:03,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:22:03,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2020-10-15 16:22:03,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373710007] [2020-10-15 16:22:03,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-15 16:22:03,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:22:03,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-15 16:22:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 16:22:03,813 INFO L87 Difference]: Start difference. First operand 92 states and 138 transitions. Second operand 51 states. [2020-10-15 16:22:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:22:03,915 INFO L93 Difference]: Finished difference Result 93 states and 139 transitions. [2020-10-15 16:22:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-15 16:22:03,916 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 56 [2020-10-15 16:22:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:22:03,917 INFO L225 Difference]: With dead ends: 93 [2020-10-15 16:22:03,917 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 16:22:03,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 16:22:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 16:22:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-15 16:22:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-15 16:22:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 139 transitions. [2020-10-15 16:22:03,921 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 139 transitions. Word has length 56 [2020-10-15 16:22:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:22:03,921 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 139 transitions. [2020-10-15 16:22:03,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-15 16:22:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 139 transitions. [2020-10-15 16:22:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 16:22:03,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:22:03,922 INFO L422 BasicCegarLoop]: trace histogram [48, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:22:04,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-15 16:22:04,134 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:22:04,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:22:04,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1210920879, now seen corresponding path program 45 times [2020-10-15 16:22:04,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:22:04,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361754716] [2020-10-15 16:22:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:22:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:22:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:05,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361754716] [2020-10-15 16:22:05,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523669225] [2020-10-15 16:22:05,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:22:12,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2020-10-15 16:22:12,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:22:12,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-15 16:22:12,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:22:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:12,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:22:12,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2020-10-15 16:22:12,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070349871] [2020-10-15 16:22:12,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-15 16:22:12,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:22:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-15 16:22:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 16:22:12,208 INFO L87 Difference]: Start difference. First operand 93 states and 139 transitions. Second operand 52 states. [2020-10-15 16:22:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:22:12,296 INFO L93 Difference]: Finished difference Result 94 states and 140 transitions. [2020-10-15 16:22:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-15 16:22:12,296 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 57 [2020-10-15 16:22:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:22:12,297 INFO L225 Difference]: With dead ends: 94 [2020-10-15 16:22:12,298 INFO L226 Difference]: Without dead ends: 94 [2020-10-15 16:22:12,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-15 16:22:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-15 16:22:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-10-15 16:22:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 16:22:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 140 transitions. [2020-10-15 16:22:12,301 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 140 transitions. Word has length 57 [2020-10-15 16:22:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:22:12,302 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 140 transitions. [2020-10-15 16:22:12,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-15 16:22:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 140 transitions. [2020-10-15 16:22:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 16:22:12,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:22:12,303 INFO L422 BasicCegarLoop]: trace histogram [49, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:22:12,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:22:12,507 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:22:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:22:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1750120376, now seen corresponding path program 46 times [2020-10-15 16:22:12,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:22:12,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578710467] [2020-10-15 16:22:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:22:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:22:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:14,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578710467] [2020-10-15 16:22:14,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530243690] [2020-10-15 16:22:14,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:22:14,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 16:22:14,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:22:14,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 51 conjunts are in the unsatisfiable core [2020-10-15 16:22:14,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:22:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:14,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:22:14,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2020-10-15 16:22:14,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025776414] [2020-10-15 16:22:14,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-15 16:22:14,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:22:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-15 16:22:14,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 16:22:14,634 INFO L87 Difference]: Start difference. First operand 94 states and 140 transitions. Second operand 53 states. [2020-10-15 16:22:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:22:14,720 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2020-10-15 16:22:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-15 16:22:14,721 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 58 [2020-10-15 16:22:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:22:14,722 INFO L225 Difference]: With dead ends: 95 [2020-10-15 16:22:14,722 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 16:22:14,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 16:22:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 16:22:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-15 16:22:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 16:22:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 141 transitions. [2020-10-15 16:22:14,728 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 141 transitions. Word has length 58 [2020-10-15 16:22:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:22:14,729 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 141 transitions. [2020-10-15 16:22:14,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-15 16:22:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 141 transitions. [2020-10-15 16:22:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 16:22:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:22:14,729 INFO L422 BasicCegarLoop]: trace histogram [50, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:22:14,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-15 16:22:14,944 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:22:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:22:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1285435599, now seen corresponding path program 47 times [2020-10-15 16:22:14,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:22:14,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218166248] [2020-10-15 16:22:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:22:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:22:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:22:16,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218166248] [2020-10-15 16:22:16,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581842651] [2020-10-15 16:22:16,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:24:19,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2020-10-15 16:24:19,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 16:24:21,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 52 conjunts are in the unsatisfiable core [2020-10-15 16:24:21,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 16:24:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:24:21,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 16:24:21,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2020-10-15 16:24:21,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921602589] [2020-10-15 16:24:21,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-15 16:24:21,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:24:21,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-15 16:24:21,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 16:24:21,720 INFO L87 Difference]: Start difference. First operand 95 states and 141 transitions. Second operand 54 states. [2020-10-15 16:24:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:24:21,790 INFO L93 Difference]: Finished difference Result 96 states and 142 transitions. [2020-10-15 16:24:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-15 16:24:21,791 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 59 [2020-10-15 16:24:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:24:21,792 INFO L225 Difference]: With dead ends: 96 [2020-10-15 16:24:21,792 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 16:24:21,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-15 16:24:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 16:24:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-15 16:24:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 16:24:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 142 transitions. [2020-10-15 16:24:21,795 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 142 transitions. Word has length 59 [2020-10-15 16:24:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:24:21,796 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 142 transitions. [2020-10-15 16:24:21,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-15 16:24:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 142 transitions. [2020-10-15 16:24:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 16:24:21,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:24:21,797 INFO L422 BasicCegarLoop]: trace histogram [51, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 16:24:22,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 16:24:22,008 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 16:24:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:24:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash -234890600, now seen corresponding path program 48 times [2020-10-15 16:24:22,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:24:22,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404758086] [2020-10-15 16:24:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:24:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:24:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 16:24:24,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404758086] [2020-10-15 16:24:24,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217874678] [2020-10-15 16:24:24,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown