/usr/bin/java -Xmx8000000000 -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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:33:37,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:33:37,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:33:37,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:33:37,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:33:37,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:33:37,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:33:37,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:33:37,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:33:37,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:33:37,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:33:37,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:33:37,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:33:37,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:33:37,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:33:37,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:33:37,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:33:37,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:33:37,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:33:37,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:33:37,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:33:37,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:33:37,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:33:37,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:33:37,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:33:37,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:33:37,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:33:37,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:33:37,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:33:37,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:33:37,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:33:37,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:33:37,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:33:37,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:33:37,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:33:37,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:33:37,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:33:37,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:33:37,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:33:37,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:33:37,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:33:37,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:33:37,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:33:37,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:33:37,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:33:37,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:33:37,968 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:33:37,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:33:37,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:33:37,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:33:37,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:33:37,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:33:37,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:33:37,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:33:37,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:33:37,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:33:37,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:33:37,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:33:37,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:33:37,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:33:37,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:33:37,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:33:37,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:33:37,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:33:37,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:33:37,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:33:37,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:33:37,973 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:33:37,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:33:37,974 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:33:37,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:33:37,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:33:38,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:33:38,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:33:38,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:33:38,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:33:38,302 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:33:38,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-18 07:33:38,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342fe534c/3953e1fcf7b54afabcc6b00af8a059f2/FLAG0696c8a04 [2020-04-18 07:33:38,907 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:33:38,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2020-04-18 07:33:38,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342fe534c/3953e1fcf7b54afabcc6b00af8a059f2/FLAG0696c8a04 [2020-04-18 07:33:39,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342fe534c/3953e1fcf7b54afabcc6b00af8a059f2 [2020-04-18 07:33:39,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:33:39,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:33:39,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:33:39,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:33:39,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:33:39,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:33:39" (1/1) ... [2020-04-18 07:33:39,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cf9aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:39, skipping insertion in model container [2020-04-18 07:33:39,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:33:39" (1/1) ... [2020-04-18 07:33:39,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:33:39,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:33:39,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:33:39,822 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:33:39,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:33:40,022 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:33:40,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40 WrapperNode [2020-04-18 07:33:40,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:33:40,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:33:40,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:33:40,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:33:40,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:33:40,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:33:40,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:33:40,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:33:40,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (1/1) ... [2020-04-18 07:33:40,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:33:40,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:33:40,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:33:40,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:33:40,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (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 [2020-04-18 07:33:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 07:33:40,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 07:33:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 07:33:40,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 07:33:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:33:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:33:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 07:33:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:33:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 07:33:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 07:33:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:33:40,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:33:40,218 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:33:40,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:33:40,762 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-04-18 07:33:40,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:33:40 BoogieIcfgContainer [2020-04-18 07:33:40,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:33:40,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:33:40,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:33:40,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:33:40,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:33:39" (1/3) ... [2020-04-18 07:33:40,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7921474e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:33:40, skipping insertion in model container [2020-04-18 07:33:40,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:33:40" (2/3) ... [2020-04-18 07:33:40,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7921474e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:33:40, skipping insertion in model container [2020-04-18 07:33:40,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:33:40" (3/3) ... [2020-04-18 07:33:40,781 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2020-04-18 07:33:40,791 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:33:40,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:33:40,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 07:33:40,801 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:33:40,852 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,853 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,853 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,854 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,854 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,854 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,855 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,855 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,855 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,855 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,856 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,856 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,856 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,857 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,857 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,857 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,857 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,858 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,858 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,858 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,858 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,859 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,859 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,859 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,859 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,860 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,860 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,861 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,861 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,861 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,877 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,877 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,878 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,878 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,878 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,878 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,879 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,879 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,880 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,881 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,881 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,881 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,882 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,882 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,882 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,882 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,882 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,883 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,885 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,885 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,885 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,885 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,885 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,886 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,886 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,886 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,887 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,887 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,887 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,888 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,888 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,888 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,888 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,888 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,889 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,889 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,889 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,892 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,892 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,892 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,893 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,894 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,894 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,894 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,894 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,895 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,896 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,897 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,897 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,897 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,898 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,898 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,898 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,898 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,899 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,899 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,899 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,899 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,899 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,900 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,900 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,900 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,900 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,900 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,901 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,901 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,901 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,902 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,905 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,906 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,906 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,906 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,914 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,914 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,914 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,915 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,915 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,915 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,915 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,915 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,916 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,916 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,917 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,918 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,918 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,918 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,918 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,918 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,923 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,923 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,923 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,924 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,924 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,924 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,924 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,924 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,925 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,925 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,925 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,925 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,925 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,925 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,926 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,926 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,926 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,926 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,926 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,927 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,927 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,927 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,927 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,933 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,933 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,933 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,934 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,934 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,934 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,934 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,934 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,935 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,935 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,935 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,935 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,936 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,936 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,936 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,936 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,936 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,937 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:33:40,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:33:40,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:33:40,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:33:40,986 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:33:40,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:33:40,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:33:40,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:33:40,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:33:40,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:33:41,010 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 298 flow [2020-04-18 07:33:41,012 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-18 07:33:41,106 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-18 07:33:41,106 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:33:41,115 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-04-18 07:33:41,125 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-04-18 07:33:41,176 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-04-18 07:33:41,176 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:33:41,178 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-04-18 07:33:41,183 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5744 [2020-04-18 07:33:41,185 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:33:44,391 WARN L192 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-04-18 07:33:44,571 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-04-18 07:33:44,959 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-04-18 07:33:45,171 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-04-18 07:33:45,181 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7699 [2020-04-18 07:33:45,181 INFO L214 etLargeBlockEncoding]: Total number of compositions: 118 [2020-04-18 07:33:45,184 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-04-18 07:33:45,207 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-04-18 07:33:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-04-18 07:33:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:33:45,215 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:45,216 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 07:33:45,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:45,222 INFO L82 PathProgramCache]: Analyzing trace with hash -290275557, now seen corresponding path program 1 times [2020-04-18 07:33:45,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:45,230 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [573677036] [2020-04-18 07:33:45,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:45,256 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:33:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 07:33:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:33:45,258 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:45,259 INFO L82 PathProgramCache]: Analyzing trace with hash -290275557, now seen corresponding path program 2 times [2020-04-18 07:33:45,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:45,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988690416] [2020-04-18 07:33:45,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:45,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988690416] [2020-04-18 07:33:45,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:45,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:33:45,486 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:45,487 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:45,489 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:33:45,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:45,497 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:45,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:45,507 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 07:33:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:45,511 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 07:33:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 07:33:45,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:45,512 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [573677036] [2020-04-18 07:33:45,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:45,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:33:45,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [573677036] [2020-04-18 07:33:45,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:33:45,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:45,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:45,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:45,520 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-04-18 07:33:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:45,629 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-04-18 07:33:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:33:45,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 07:33:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:45,655 INFO L225 Difference]: With dead ends: 504 [2020-04-18 07:33:45,656 INFO L226 Difference]: Without dead ends: 460 [2020-04-18 07:33:45,657 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:45,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-04-18 07:33:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-04-18 07:33:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-04-18 07:33:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-04-18 07:33:45,756 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-04-18 07:33:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:45,757 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-04-18 07:33:45,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:33:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-04-18 07:33:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:33:45,758 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:45,758 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:45,759 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:45,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1518668221, now seen corresponding path program 1 times [2020-04-18 07:33:45,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:45,760 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1842310211] [2020-04-18 07:33:45,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:45,760 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:33:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:33:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:33:45,761 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:45,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1518668221, now seen corresponding path program 2 times [2020-04-18 07:33:45,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:45,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529720210] [2020-04-18 07:33:45,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:45,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529720210] [2020-04-18 07:33:45,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:45,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:33:45,854 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:45,855 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:45,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:33:45,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:45,859 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:45,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:45,860 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 07:33:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:45,862 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:33:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:33:45,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:45,863 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1842310211] [2020-04-18 07:33:45,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:45,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:33:45,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1842310211] [2020-04-18 07:33:45,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:33:45,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:45,865 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-04-18 07:33:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:45,881 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-04-18 07:33:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:33:45,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 07:33:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:45,885 INFO L225 Difference]: With dead ends: 464 [2020-04-18 07:33:45,885 INFO L226 Difference]: Without dead ends: 464 [2020-04-18 07:33:45,886 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-18 07:33:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-04-18 07:33:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-04-18 07:33:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-04-18 07:33:45,917 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-04-18 07:33:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:45,917 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-04-18 07:33:45,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:33:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-04-18 07:33:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:33:45,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:45,919 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:45,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:45,920 INFO L82 PathProgramCache]: Analyzing trace with hash 542344755, now seen corresponding path program 1 times [2020-04-18 07:33:45,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:45,921 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2021319353] [2020-04-18 07:33:45,921 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:45,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:33:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 07:33:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:33:45,922 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 542344755, now seen corresponding path program 2 times [2020-04-18 07:33:45,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:45,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596293085] [2020-04-18 07:33:45,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:46,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596293085] [2020-04-18 07:33:46,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512038791] [2020-04-18 07:33:46,010 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 07:33:46,096 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:33:46,096 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:46,098 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 07:33:46,130 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:46,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:33:46,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 07:33:46,167 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:46,169 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:33:46,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:46,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:46,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:33:46,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:33:46,195 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 7 states. [2020-04-18 07:33:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,222 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-04-18 07:33:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-04-18 07:33:46,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:46,223 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2021319353] [2020-04-18 07:33:46,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:46,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:33:46,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2021319353] [2020-04-18 07:33:46,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 07:33:46,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:46,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:33:46,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:33:46,226 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-04-18 07:33:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,337 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-04-18 07:33:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 07:33:46,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 07:33:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:46,343 INFO L225 Difference]: With dead ends: 866 [2020-04-18 07:33:46,344 INFO L226 Difference]: Without dead ends: 851 [2020-04-18 07:33:46,344 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:33:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-04-18 07:33:46,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-04-18 07:33:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-04-18 07:33:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-04-18 07:33:46,371 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-04-18 07:33:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:46,371 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-04-18 07:33:46,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 07:33:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-04-18 07:33:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:33:46,374 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:46,374 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:46,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:46,584 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,584 INFO L82 PathProgramCache]: Analyzing trace with hash 843892794, now seen corresponding path program 1 times [2020-04-18 07:33:46,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:46,585 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1173344289] [2020-04-18 07:33:46,586 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 114 transitions. [2020-04-18 07:33:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 07:33:46,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:33:46,590 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash 843892794, now seen corresponding path program 2 times [2020-04-18 07:33:46,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:46,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190075603] [2020-04-18 07:33:46,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:46,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190075603] [2020-04-18 07:33:46,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:46,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:33:46,648 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:46,650 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,653 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-04-18 07:33:46,653 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:46,663 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:33:46,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:46,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:46,664 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 07:33:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,672 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2020-04-18 07:33:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 114 transitions. [2020-04-18 07:33:46,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:46,673 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1173344289] [2020-04-18 07:33:46,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:46,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:33:46,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1173344289] [2020-04-18 07:33:46,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:33:46,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:46,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:46,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:46,674 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-04-18 07:33:46,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,693 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-04-18 07:33:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:33:46,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-04-18 07:33:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:46,696 INFO L225 Difference]: With dead ends: 304 [2020-04-18 07:33:46,696 INFO L226 Difference]: Without dead ends: 304 [2020-04-18 07:33:46,696 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-18 07:33:46,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-04-18 07:33:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-04-18 07:33:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-04-18 07:33:46,705 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-04-18 07:33:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:46,705 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-04-18 07:33:46,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:33:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-04-18 07:33:46,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:33:46,706 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:46,707 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:46,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:46,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,707 INFO L82 PathProgramCache]: Analyzing trace with hash -960478475, now seen corresponding path program 1 times [2020-04-18 07:33:46,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:46,708 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1399468084] [2020-04-18 07:33:46,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,709 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 129 transitions. [2020-04-18 07:33:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 07:33:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:33:46,711 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash -960478475, now seen corresponding path program 2 times [2020-04-18 07:33:46,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:46,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187675102] [2020-04-18 07:33:46,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:46,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187675102] [2020-04-18 07:33:46,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:46,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:33:46,760 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:46,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 35 transitions. [2020-04-18 07:33:46,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:46,768 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:46,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:46,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:46,769 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 07:33:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,782 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2020-04-18 07:33:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 136 transitions. [2020-04-18 07:33:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:33:46,783 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:33:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1526843371, now seen corresponding path program 3 times [2020-04-18 07:33:46,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:46,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825245055] [2020-04-18 07:33:46,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:46,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825245055] [2020-04-18 07:33:46,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:46,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:33:46,826 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:46,827 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,830 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 31 transitions. [2020-04-18 07:33:46,831 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:46,835 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:33:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:33:46,836 INFO L87 Difference]: Start difference. First operand 80 states and 136 transitions. Second operand 3 states. [2020-04-18 07:33:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,842 INFO L93 Difference]: Finished difference Result 84 states and 140 transitions. [2020-04-18 07:33:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 140 transitions. [2020-04-18 07:33:46,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:46,843 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1399468084] [2020-04-18 07:33:46,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:46,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:33:46,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1399468084] [2020-04-18 07:33:46,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:33:46,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:46,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:33:46,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:33:46,845 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 4 states. [2020-04-18 07:33:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:46,892 INFO L93 Difference]: Finished difference Result 418 states and 903 transitions. [2020-04-18 07:33:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 07:33:46,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 07:33:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:46,895 INFO L225 Difference]: With dead ends: 418 [2020-04-18 07:33:46,896 INFO L226 Difference]: Without dead ends: 418 [2020-04-18 07:33:46,896 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:33:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-18 07:33:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 295. [2020-04-18 07:33:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-04-18 07:33:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-04-18 07:33:46,905 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-04-18 07:33:46,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:46,906 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-04-18 07:33:46,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:33:46,906 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-04-18 07:33:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 07:33:46,907 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:46,908 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-18 07:33:46,908 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230501, now seen corresponding path program 3 times [2020-04-18 07:33:46,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:46,909 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1519373903] [2020-04-18 07:33:46,909 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:46,909 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-04-18 07:33:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-04-18 07:33:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 07:33:46,910 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:46,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:46,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1582230501, now seen corresponding path program 4 times [2020-04-18 07:33:46,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:46,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948791384] [2020-04-18 07:33:46,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:47,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948791384] [2020-04-18 07:33:47,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287162677] [2020-04-18 07:33:47,025 INFO L92 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 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 [2020-04-18 07:33:47,111 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 07:33:47,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:47,113 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 07:33:47,115 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:47,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:33:47,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-04-18 07:33:47,137 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:47,139 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:47,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-04-18 07:33:47,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:47,193 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:47,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:33:47,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:33:47,194 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 10 states. [2020-04-18 07:33:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:47,280 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-04-18 07:33:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-04-18 07:33:47,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:47,281 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1519373903] [2020-04-18 07:33:47,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:47,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 07:33:47,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1519373903] [2020-04-18 07:33:47,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 07:33:47,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:47,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:33:47,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:33:47,282 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 10 states. [2020-04-18 07:33:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:47,416 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-04-18 07:33:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 07:33:47,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-04-18 07:33:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:47,420 INFO L225 Difference]: With dead ends: 542 [2020-04-18 07:33:47,420 INFO L226 Difference]: Without dead ends: 542 [2020-04-18 07:33:47,420 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-04-18 07:33:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-04-18 07:33:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-04-18 07:33:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-04-18 07:33:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-04-18 07:33:47,455 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-04-18 07:33:47,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:47,455 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-04-18 07:33:47,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 07:33:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-04-18 07:33:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:33:47,456 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:47,457 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:47,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:47,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash 69417077, now seen corresponding path program 1 times [2020-04-18 07:33:47,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:47,666 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [484853884] [2020-04-18 07:33:47,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:47,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 197 transitions. [2020-04-18 07:33:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-04-18 07:33:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:33:47,671 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:47,671 INFO L82 PathProgramCache]: Analyzing trace with hash 69417077, now seen corresponding path program 2 times [2020-04-18 07:33:47,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:47,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720618789] [2020-04-18 07:33:47,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:48,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720618789] [2020-04-18 07:33:48,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:48,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:33:48,650 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:48,652 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:48,656 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 39 transitions. [2020-04-18 07:33:48,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:48,924 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:33:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 07:33:48,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-04-18 07:33:48,925 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 12 states. [2020-04-18 07:33:49,644 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-04-18 07:33:49,965 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-04-18 07:33:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:50,306 INFO L93 Difference]: Finished difference Result 158 states and 277 transitions. [2020-04-18 07:33:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 277 transitions. [2020-04-18 07:33:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:33:50,307 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:33:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:50,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1329791031, now seen corresponding path program 3 times [2020-04-18 07:33:50,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:50,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898267644] [2020-04-18 07:33:50,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:50,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898267644] [2020-04-18 07:33:50,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:50,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:33:50,597 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:50,600 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:50,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 61 transitions. [2020-04-18 07:33:50,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:51,068 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 07:33:51,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 07:33:51,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2020-04-18 07:33:51,069 INFO L87 Difference]: Start difference. First operand 158 states and 277 transitions. Second operand 14 states. [2020-04-18 07:33:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:52,425 INFO L93 Difference]: Finished difference Result 186 states and 320 transitions. [2020-04-18 07:33:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 320 transitions. [2020-04-18 07:33:52,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:52,426 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [484853884] [2020-04-18 07:33:52,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:52,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 07:33:52,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [484853884] [2020-04-18 07:33:52,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 07:33:52,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:52,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 07:33:52,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=941, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 07:33:52,428 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 22 states. [2020-04-18 07:33:53,061 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-04-18 07:33:53,244 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-04-18 07:33:53,783 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-04-18 07:33:54,273 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-04-18 07:33:54,861 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-04-18 07:33:55,520 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-04-18 07:33:57,221 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-04-18 07:33:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:58,808 INFO L93 Difference]: Finished difference Result 2001 states and 4308 transitions. [2020-04-18 07:33:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-18 07:33:58,809 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2020-04-18 07:33:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:58,817 INFO L225 Difference]: With dead ends: 2001 [2020-04-18 07:33:58,817 INFO L226 Difference]: Without dead ends: 1598 [2020-04-18 07:33:58,819 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1059, Invalid=3101, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 07:33:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-04-18 07:33:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 474. [2020-04-18 07:33:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-04-18 07:33:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1067 transitions. [2020-04-18 07:33:58,842 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1067 transitions. Word has length 21 [2020-04-18 07:33:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:58,843 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 1067 transitions. [2020-04-18 07:33:58,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 07:33:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1067 transitions. [2020-04-18 07:33:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:33:58,844 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:58,844 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:58,845 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash 2126692033, now seen corresponding path program 1 times [2020-04-18 07:33:58,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:58,846 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1786261922] [2020-04-18 07:33:58,846 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:58,848 INFO L259 McrAutomatonBuilder]: Finished intersection with 146 states and 266 transitions. [2020-04-18 07:33:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-04-18 07:33:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:33:58,850 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash 101782855, now seen corresponding path program 2 times [2020-04-18 07:33:58,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:58,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571845620] [2020-04-18 07:33:58,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:58,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571845620] [2020-04-18 07:33:58,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286384816] [2020-04-18 07:33:58,886 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 07:33:58,955 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-04-18 07:33:58,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:58,956 INFO L264 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-04-18 07:33:58,958 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:59,010 INFO L377 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 [2020-04-18 07:33:59,011 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:33:59,014 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:33:59,014 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 07:33:59,015 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-04-18 07:33:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:33:59,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:59,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-04-18 07:33:59,031 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:59,035 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:59,045 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 84 transitions. [2020-04-18 07:33:59,045 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:59,226 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:33:59,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 07:33:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 07:33:59,227 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 12 states. [2020-04-18 07:33:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:59,411 INFO L93 Difference]: Finished difference Result 157 states and 283 transitions. [2020-04-18 07:33:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 283 transitions. [2020-04-18 07:33:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:33:59,412 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:33:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:59,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2126692033, now seen corresponding path program 3 times [2020-04-18 07:33:59,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:59,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666823969] [2020-04-18 07:33:59,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:59,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666823969] [2020-04-18 07:33:59,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820644951] [2020-04-18 07:33:59,471 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 07:33:59,551 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 07:33:59,551 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:59,552 INFO L264 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 07:33:59,554 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:33:59,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:59,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-04-18 07:33:59,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:59,580 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:59,586 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 42 transitions. [2020-04-18 07:33:59,586 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:59,623 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:59,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:33:59,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-04-18 07:33:59,624 INFO L87 Difference]: Start difference. First operand 157 states and 283 transitions. Second operand 8 states. [2020-04-18 07:33:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:59,673 INFO L93 Difference]: Finished difference Result 178 states and 322 transitions. [2020-04-18 07:33:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 322 transitions. [2020-04-18 07:33:59,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:59,674 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1786261922] [2020-04-18 07:33:59,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:59,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 07:33:59,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1786261922] [2020-04-18 07:33:59,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 07:33:59,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:59,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 07:33:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:33:59,675 INFO L87 Difference]: Start difference. First operand 474 states and 1067 transitions. Second operand 15 states. [2020-04-18 07:34:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:00,619 INFO L93 Difference]: Finished difference Result 838 states and 1780 transitions. [2020-04-18 07:34:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 07:34:00,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-04-18 07:34:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:34:00,624 INFO L225 Difference]: With dead ends: 838 [2020-04-18 07:34:00,624 INFO L226 Difference]: Without dead ends: 828 [2020-04-18 07:34:00,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=456, Invalid=1350, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 07:34:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-04-18 07:34:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 530. [2020-04-18 07:34:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-04-18 07:34:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1160 transitions. [2020-04-18 07:34:00,642 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1160 transitions. Word has length 24 [2020-04-18 07:34:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:34:00,642 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 1160 transitions. [2020-04-18 07:34:00,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 07:34:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1160 transitions. [2020-04-18 07:34:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 07:34:00,643 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:34:00,643 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-04-18 07:34:01,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:34:01,056 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:34:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:01,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2004586803, now seen corresponding path program 5 times [2020-04-18 07:34:01,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:34:01,058 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1905238749] [2020-04-18 07:34:01,059 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:01,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 07:34:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 07:34:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 07:34:01,060 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:34:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:01,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2004586803, now seen corresponding path program 6 times [2020-04-18 07:34:01,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:01,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197523391] [2020-04-18 07:34:01,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:34:01,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197523391] [2020-04-18 07:34:01,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368380607] [2020-04-18 07:34:01,176 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 07:34:01,281 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 07:34:01,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:34:01,283 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 07:34:01,285 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:34:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:34:01,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:34:01,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2020-04-18 07:34:01,351 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:34:01,360 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:01,366 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 07:34:01,366 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:34:01,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:34:01,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 07:34:01,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:34:01,436 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 13 states. [2020-04-18 07:34:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:01,573 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-04-18 07:34:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-04-18 07:34:01,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:34:01,574 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1905238749] [2020-04-18 07:34:01,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:34:01,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-04-18 07:34:01,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1905238749] [2020-04-18 07:34:01,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 07:34:01,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:34:01,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 07:34:01,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-04-18 07:34:01,575 INFO L87 Difference]: Start difference. First operand 530 states and 1160 transitions. Second operand 13 states. [2020-04-18 07:34:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:01,679 INFO L93 Difference]: Finished difference Result 933 states and 1996 transitions. [2020-04-18 07:34:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 07:34:01,679 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-04-18 07:34:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:34:01,689 INFO L225 Difference]: With dead ends: 933 [2020-04-18 07:34:01,689 INFO L226 Difference]: Without dead ends: 933 [2020-04-18 07:34:01,690 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:34:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-04-18 07:34:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 623. [2020-04-18 07:34:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-04-18 07:34:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1375 transitions. [2020-04-18 07:34:01,706 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1375 transitions. Word has length 27 [2020-04-18 07:34:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:34:01,706 INFO L479 AbstractCegarLoop]: Abstraction has 623 states and 1375 transitions. [2020-04-18 07:34:01,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 07:34:01,706 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1375 transitions. [2020-04-18 07:34:01,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:34:01,709 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:34:01,709 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:34:01,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:34:01,922 INFO L427 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:34:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:01,922 INFO L82 PathProgramCache]: Analyzing trace with hash -408396195, now seen corresponding path program 4 times [2020-04-18 07:34:01,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:34:01,923 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1920885089] [2020-04-18 07:34:01,923 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:01,925 INFO L259 McrAutomatonBuilder]: Finished intersection with 194 states and 358 transitions. [2020-04-18 07:34:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-04-18 07:34:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:34:01,927 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:34:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash -408396195, now seen corresponding path program 5 times [2020-04-18 07:34:01,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:01,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9835900] [2020-04-18 07:34:01,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:34:02,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9835900] [2020-04-18 07:34:02,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436180364] [2020-04-18 07:34:02,621 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-04-18 07:34:02,706 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:34:02,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:34:02,708 INFO L264 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 50 conjunts are in the unsatisfiable core [2020-04-18 07:34:02,713 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:34:02,759 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:34:02,760 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 508 treesize of output 518 [2020-04-18 07:34:02,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,770 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:02,838 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:03,153 WARN L192 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 27 [2020-04-18 07:34:03,154 INFO L619 ElimStorePlain]: treesize reduction 8122, result has 0.4 percent of original size [2020-04-18 07:34:03,155 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-18 07:34:03,155 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:49, output treesize:4 [2020-04-18 07:34:03,419 INFO L377 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 17 treesize of output 13 [2020-04-18 07:34:03,420 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:03,427 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:34:03,428 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:34:03,428 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2020-04-18 07:34:03,664 INFO L377 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2020-04-18 07:34:03,665 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:03,701 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:34:03,702 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-18 07:34:03,703 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2020-04-18 07:34:04,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:04,100 INFO L377 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2020-04-18 07:34:04,100 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:04,116 INFO L377 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 19 [2020-04-18 07:34:04,117 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:04,135 INFO L619 ElimStorePlain]: treesize reduction 28, result has 34.9 percent of original size [2020-04-18 07:34:04,135 INFO L539 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:34:04,136 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:116, output treesize:11 [2020-04-18 07:34:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:34:04,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:34:04,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 28 [2020-04-18 07:34:04,228 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:34:04,232 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:04,240 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 46 transitions. [2020-04-18 07:34:04,240 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:34:05,633 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:34:05,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-18 07:34:05,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1177, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 07:34:05,635 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 36 states. [2020-04-18 07:34:07,438 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-04-18 07:34:08,056 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-04-18 07:34:08,597 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-04-18 07:34:09,945 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-04-18 07:34:10,422 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-04-18 07:34:10,963 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-04-18 07:34:11,373 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-04-18 07:34:11,781 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-04-18 07:34:13,056 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-04-18 07:34:13,671 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-04-18 07:34:16,661 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2020-04-18 07:34:16,966 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-04-18 07:34:17,260 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-04-18 07:34:18,638 WARN L192 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2020-04-18 07:34:19,336 WARN L192 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-04-18 07:34:19,619 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-04-18 07:34:19,878 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-04-18 07:34:21,354 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2020-04-18 07:34:22,130 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-04-18 07:34:22,971 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-04-18 07:34:23,343 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-04-18 07:34:23,762 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-04-18 07:34:28,492 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-04-18 07:34:29,004 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-04-18 07:34:29,974 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-04-18 07:34:31,176 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-04-18 07:34:31,940 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-04-18 07:34:32,850 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-04-18 07:34:34,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:34,975 INFO L93 Difference]: Finished difference Result 337 states and 602 transitions. [2020-04-18 07:34:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 602 transitions. [2020-04-18 07:34:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:34:34,976 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:34:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:34,976 INFO L82 PathProgramCache]: Analyzing trace with hash 128587677, now seen corresponding path program 6 times [2020-04-18 07:34:34,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:34,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987205782] [2020-04-18 07:34:34,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:34:35,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987205782] [2020-04-18 07:34:35,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:34:35,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:34:35,024 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:34:35,028 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:35,036 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 50 transitions. [2020-04-18 07:34:35,037 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:34:35,191 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:34:35,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:34:35,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1761, Invalid=11810, Unknown=1, NotChecked=0, Total=13572 [2020-04-18 07:34:35,195 INFO L87 Difference]: Start difference. First operand 337 states and 602 transitions. Second operand 3 states. [2020-04-18 07:34:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:35,204 INFO L93 Difference]: Finished difference Result 353 states and 624 transitions. [2020-04-18 07:34:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 624 transitions. [2020-04-18 07:34:35,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:34:35,206 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1920885089] [2020-04-18 07:34:35,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:34:35,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:34:35,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1920885089] [2020-04-18 07:34:35,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-18 07:34:35,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:34:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-18 07:34:35,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1761, Invalid=11810, Unknown=1, NotChecked=0, Total=13572 [2020-04-18 07:34:35,212 INFO L87 Difference]: Start difference. First operand 623 states and 1375 transitions. Second operand 37 states. [2020-04-18 07:34:36,626 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-04-18 07:34:36,924 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-04-18 07:34:37,406 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-04-18 07:34:37,918 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-04-18 07:34:39,059 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-04-18 07:34:39,254 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2020-04-18 07:34:39,680 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-04-18 07:34:39,969 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-04-18 07:34:40,453 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-04-18 07:34:42,950 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-04-18 07:34:43,195 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-04-18 07:34:43,521 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-04-18 07:34:44,724 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-04-18 07:34:45,914 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-04-18 07:34:46,910 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-04-18 07:34:47,352 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-04-18 07:34:47,793 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-04-18 07:34:48,478 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-04-18 07:34:49,471 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-04-18 07:34:49,705 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-04-18 07:34:50,198 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-04-18 07:34:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:50,201 INFO L93 Difference]: Finished difference Result 1571 states and 3305 transitions. [2020-04-18 07:34:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-04-18 07:34:50,201 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 28 [2020-04-18 07:34:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:34:50,207 INFO L225 Difference]: With dead ends: 1571 [2020-04-18 07:34:50,207 INFO L226 Difference]: Without dead ends: 1491 [2020-04-18 07:34:50,214 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11021 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=3541, Invalid=29764, Unknown=1, NotChecked=0, Total=33306 [2020-04-18 07:34:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2020-04-18 07:34:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 627. [2020-04-18 07:34:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-04-18 07:34:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1381 transitions. [2020-04-18 07:34:50,234 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1381 transitions. Word has length 28 [2020-04-18 07:34:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:34:50,234 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 1381 transitions. [2020-04-18 07:34:50,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-18 07:34:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1381 transitions. [2020-04-18 07:34:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:34:50,236 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:34:50,236 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:34:50,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:34:50,439 INFO L427 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:34:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:50,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1113124825, now seen corresponding path program 4 times [2020-04-18 07:34:50,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:34:50,440 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1858873744] [2020-04-18 07:34:50,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:50,444 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 427 transitions. [2020-04-18 07:34:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states. [2020-04-18 07:34:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:34:50,446 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:34:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:50,446 INFO L82 PathProgramCache]: Analyzing trace with hash -911784353, now seen corresponding path program 5 times [2020-04-18 07:34:50,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:50,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261619902] [2020-04-18 07:34:50,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-04-18 07:34:50,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261619902] [2020-04-18 07:34:50,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:34:50,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:34:50,485 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:34:50,490 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:50,504 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 91 transitions. [2020-04-18 07:34:50,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:34:50,519 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:34:50,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:34:50,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:34:50,520 INFO L87 Difference]: Start difference. First operand 230 states. Second operand 5 states. [2020-04-18 07:34:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:50,572 INFO L93 Difference]: Finished difference Result 261 states and 471 transitions. [2020-04-18 07:34:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 471 transitions. [2020-04-18 07:34:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:34:50,573 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:34:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:50,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1113124825, now seen corresponding path program 6 times [2020-04-18 07:34:50,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:50,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722697917] [2020-04-18 07:34:50,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:34:50,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722697917] [2020-04-18 07:34:50,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495329938] [2020-04-18 07:34:50,663 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 07:34:50,761 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 07:34:50,762 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:34:50,763 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 07:34:50,765 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:34:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:34:50,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:34:50,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-04-18 07:34:50,785 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:34:50,791 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:50,801 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 49 transitions. [2020-04-18 07:34:50,801 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:34:50,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:34:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 07:34:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-04-18 07:34:50,889 INFO L87 Difference]: Start difference. First operand 261 states and 471 transitions. Second operand 11 states. [2020-04-18 07:34:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:51,148 INFO L93 Difference]: Finished difference Result 362 states and 647 transitions. [2020-04-18 07:34:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 647 transitions. [2020-04-18 07:34:51,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:34:51,150 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1858873744] [2020-04-18 07:34:51,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:34:51,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 07:34:51,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1858873744] [2020-04-18 07:34:51,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 07:34:51,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:34:51,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 07:34:51,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:34:51,152 INFO L87 Difference]: Start difference. First operand 627 states and 1381 transitions. Second operand 14 states. [2020-04-18 07:34:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:51,494 INFO L93 Difference]: Finished difference Result 935 states and 1999 transitions. [2020-04-18 07:34:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 07:34:51,494 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-04-18 07:34:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:34:51,499 INFO L225 Difference]: With dead ends: 935 [2020-04-18 07:34:51,499 INFO L226 Difference]: Without dead ends: 935 [2020-04-18 07:34:51,499 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 07:34:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-04-18 07:34:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 671. [2020-04-18 07:34:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-04-18 07:34:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1505 transitions. [2020-04-18 07:34:51,523 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1505 transitions. Word has length 31 [2020-04-18 07:34:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:34:51,523 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 1505 transitions. [2020-04-18 07:34:51,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 07:34:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1505 transitions. [2020-04-18 07:34:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 07:34:51,525 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:34:51,525 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-04-18 07:34:51,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:34:51,730 INFO L427 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:34:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash 443984155, now seen corresponding path program 7 times [2020-04-18 07:34:51,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:34:51,731 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [401663722] [2020-04-18 07:34:51,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:51,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 07:34:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 07:34:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 07:34:51,732 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:34:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:51,732 INFO L82 PathProgramCache]: Analyzing trace with hash 443984155, now seen corresponding path program 8 times [2020-04-18 07:34:51,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:51,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484725467] [2020-04-18 07:34:51,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:34:51,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484725467] [2020-04-18 07:34:51,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076119251] [2020-04-18 07:34:51,850 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 07:34:51,948 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:34:51,948 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:34:51,949 INFO L264 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 07:34:51,955 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:34:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:34:51,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:34:51,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2020-04-18 07:34:51,981 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:34:51,989 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:51,998 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 07:34:51,998 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:34:52,103 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:34:52,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 07:34:52,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-04-18 07:34:52,104 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 16 states. [2020-04-18 07:34:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:52,354 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-04-18 07:34:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-04-18 07:34:52,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:34:52,354 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [401663722] [2020-04-18 07:34:52,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:34:52,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-04-18 07:34:52,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [401663722] [2020-04-18 07:34:52,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 07:34:52,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:34:52,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 07:34:52,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 07:34:52,356 INFO L87 Difference]: Start difference. First operand 671 states and 1505 transitions. Second operand 16 states. [2020-04-18 07:34:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:34:52,514 INFO L93 Difference]: Finished difference Result 1073 states and 2320 transitions. [2020-04-18 07:34:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 07:34:52,515 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-04-18 07:34:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:34:52,520 INFO L225 Difference]: With dead ends: 1073 [2020-04-18 07:34:52,520 INFO L226 Difference]: Without dead ends: 1073 [2020-04-18 07:34:52,520 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:34:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2020-04-18 07:34:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 748. [2020-04-18 07:34:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-04-18 07:34:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1674 transitions. [2020-04-18 07:34:52,535 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1674 transitions. Word has length 34 [2020-04-18 07:34:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:34:52,535 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 1674 transitions. [2020-04-18 07:34:52,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 07:34:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1674 transitions. [2020-04-18 07:34:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 07:34:52,536 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:34:52,537 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:34:52,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:34:52,740 INFO L427 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:34:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1975916590, now seen corresponding path program 1 times [2020-04-18 07:34:52,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:34:52,742 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [310039218] [2020-04-18 07:34:52,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:34:52,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 606 transitions. [2020-04-18 07:34:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-04-18 07:34:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 07:34:52,751 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:34:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:34:52,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1975916590, now seen corresponding path program 2 times [2020-04-18 07:34:52,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:34:52,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20038110] [2020-04-18 07:34:52,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:34:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:34:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:34:53,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20038110] [2020-04-18 07:34:53,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262081671] [2020-04-18 07:34:53,787 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 07:34:53,866 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:34:53,866 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:34:53,868 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 64 conjunts are in the unsatisfiable core [2020-04-18 07:34:53,869 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:34:53,896 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:34:53,896 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 642 treesize of output 630 [2020-04-18 07:34:53,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:53,917 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 07:34:54,135 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 31 [2020-04-18 07:34:54,136 INFO L619 ElimStorePlain]: treesize reduction 9894, result has 0.4 percent of original size [2020-04-18 07:34:54,137 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-04-18 07:34:54,137 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:52, output treesize:8 [2020-04-18 07:34:54,324 INFO L377 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 17 treesize of output 13 [2020-04-18 07:34:54,325 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:54,338 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:34:54,339 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:34:54,339 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2020-04-18 07:34:54,688 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:34:54,688 INFO L377 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 68 [2020-04-18 07:34:54,689 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:34:54,735 INFO L619 ElimStorePlain]: treesize reduction 26, result has 70.1 percent of original size [2020-04-18 07:34:54,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:34:54,739 INFO L539 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-04-18 07:34:54,739 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:53, output treesize:61 [2020-04-18 07:34:54,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:35:04,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:35:11,189 WARN L192 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-04-18 07:35:13,672 WARN L192 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 38 [2020-04-18 07:35:13,692 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:35:13,692 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 56 [2020-04-18 07:35:13,693 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:35:13,737 INFO L619 ElimStorePlain]: treesize reduction 26, result has 68.3 percent of original size [2020-04-18 07:35:13,739 INFO L539 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-04-18 07:35:13,739 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:60, output treesize:56 [2020-04-18 07:35:15,847 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 45 [2020-04-18 07:35:17,948 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 45 [2020-04-18 07:35:20,079 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 44 [2020-04-18 07:35:22,225 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 45 [2020-04-18 07:35:22,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:35:22,604 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 07:35:22,606 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 07:35:22,608 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2020-04-18 07:35:22,609 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:35:22,616 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:35:22,617 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 35 [2020-04-18 07:35:22,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:35:22,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:35:22,619 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:35:22,665 INFO L619 ElimStorePlain]: treesize reduction 52, result has 37.3 percent of original size [2020-04-18 07:35:22,666 INFO L539 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:35:22,667 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:138, output treesize:11 [2020-04-18 07:35:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:35:22,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:35:22,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 43 [2020-04-18 07:35:22,778 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:35:22,782 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:35:22,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 54 transitions. [2020-04-18 07:35:22,791 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:35:34,300 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 38 [2020-04-18 07:35:36,520 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 45 [2020-04-18 07:35:38,631 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 45 [2020-04-18 07:35:40,752 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 44 [2020-04-18 07:35:43,434 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 54 [2020-04-18 07:35:45,633 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 44 [2020-04-18 07:35:45,636 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:35:45,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-04-18 07:35:45,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2214, Unknown=4, NotChecked=0, Total=2352 [2020-04-18 07:35:45,636 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 49 states. [2020-04-18 07:35:48,806 WARN L192 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 81 DAG size of output: 38 [2020-04-18 07:35:49,704 WARN L192 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-04-18 07:35:52,097 WARN L192 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 83 DAG size of output: 40 [2020-04-18 07:35:52,948 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-04-18 07:35:53,331 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 40 [2020-04-18 07:35:53,876 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-04-18 07:35:54,781 WARN L192 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2020-04-18 07:35:55,268 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-04-18 07:35:56,205 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-04-18 07:36:02,784 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-04-18 07:36:03,430 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-04-18 07:36:06,094 WARN L192 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2020-04-18 07:36:10,927 WARN L192 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2020-04-18 07:36:11,462 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 57 [2020-04-18 07:36:12,521 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2020-04-18 07:36:13,320 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2020-04-18 07:36:20,479 WARN L192 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-04-18 07:36:21,133 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2020-04-18 07:36:25,228 WARN L192 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2020-04-18 07:36:25,890 WARN L192 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2020-04-18 07:36:26,854 WARN L192 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 64 [2020-04-18 07:36:27,328 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-04-18 07:36:30,413 WARN L192 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 112 DAG size of output: 68 [2020-04-18 07:36:31,526 WARN L192 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2020-04-18 07:36:32,140 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 63 [2020-04-18 07:36:32,998 WARN L192 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2020-04-18 07:36:34,336 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 61 [2020-04-18 07:36:35,165 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2020-04-18 07:36:36,196 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2020-04-18 07:36:36,937 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2020-04-18 07:36:37,423 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2020-04-18 07:36:37,928 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 69 [2020-04-18 07:36:38,995 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-04-18 07:36:39,705 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2020-04-18 07:36:40,068 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2020-04-18 07:36:40,555 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-04-18 07:36:43,403 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-04-18 07:36:46,209 WARN L192 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 114 DAG size of output: 65 [2020-04-18 07:36:47,354 WARN L192 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 73 [2020-04-18 07:36:47,901 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-04-18 07:36:48,350 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-04-18 07:36:50,970 WARN L192 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 137 DAG size of output: 72 [2020-04-18 07:36:51,604 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2020-04-18 07:36:54,157 WARN L192 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-04-18 07:36:54,729 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-04-18 07:36:55,891 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2020-04-18 07:36:58,832 WARN L192 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2020-04-18 07:36:59,986 WARN L192 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2020-04-18 07:37:00,485 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-04-18 07:37:01,621 WARN L192 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2020-04-18 07:37:02,152 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2020-04-18 07:37:03,963 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2020-04-18 07:37:04,704 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2020-04-18 07:37:05,905 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-04-18 07:37:16,325 WARN L192 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 98 DAG size of output: 46 [2020-04-18 07:37:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:37:16,446 INFO L93 Difference]: Finished difference Result 514 states and 933 transitions. [2020-04-18 07:37:16,446 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 933 transitions. [2020-04-18 07:37:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 07:37:16,447 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:37:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:37:16,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1726533202, now seen corresponding path program 3 times [2020-04-18 07:37:16,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:37:16,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5505961] [2020-04-18 07:37:16,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:37:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:37:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 07:37:16,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5505961] [2020-04-18 07:37:16,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:37:16,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:37:16,489 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:37:16,496 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:37:16,534 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 56 transitions. [2020-04-18 07:37:16,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:37:16,741 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:37:16,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:37:16,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1860, Invalid=12415, Unknown=5, NotChecked=0, Total=14280 [2020-04-18 07:37:16,743 INFO L87 Difference]: Start difference. First operand 514 states and 933 transitions. Second operand 3 states. [2020-04-18 07:37:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:37:16,756 INFO L93 Difference]: Finished difference Result 582 states and 1035 transitions. [2020-04-18 07:37:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1035 transitions. [2020-04-18 07:37:16,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:37:16,758 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [310039218] [2020-04-18 07:37:16,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:37:16,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:37:16,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [310039218] [2020-04-18 07:37:16,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-04-18 07:37:16,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:37:16,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-04-18 07:37:16,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1860, Invalid=12415, Unknown=5, NotChecked=0, Total=14280 [2020-04-18 07:37:16,760 INFO L87 Difference]: Start difference. First operand 748 states and 1674 transitions. Second operand 50 states. [2020-04-18 07:37:18,099 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2020-04-18 07:37:18,379 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 50 [2020-04-18 07:37:18,993 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2020-04-18 07:37:19,736 WARN L192 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-04-18 07:37:20,258 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2020-04-18 07:37:21,169 WARN L192 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2020-04-18 07:37:21,616 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-04-18 07:37:22,006 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-04-18 07:37:22,445 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-04-18 07:37:25,094 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2020-04-18 07:37:25,469 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-04-18 07:37:27,856 WARN L192 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2020-04-18 07:37:28,275 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2020-04-18 07:37:28,713 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2020-04-18 07:37:29,079 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2020-04-18 07:37:29,734 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2020-04-18 07:37:32,291 WARN L192 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 116 DAG size of output: 72 [2020-04-18 07:37:32,637 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2020-04-18 07:37:33,447 WARN L192 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2020-04-18 07:37:34,713 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 70 [2020-04-18 07:37:35,421 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 76 [2020-04-18 07:37:36,014 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2020-04-18 07:37:36,828 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2020-04-18 07:37:38,129 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-04-18 07:37:38,994 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2020-04-18 07:37:39,598 WARN L192 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2020-04-18 07:37:40,055 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2020-04-18 07:37:41,312 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-04-18 07:37:44,115 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-04-18 07:37:44,551 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2020-04-18 07:37:44,883 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-04-18 07:37:45,445 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2020-04-18 07:37:45,973 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2020-04-18 07:37:46,503 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2020-04-18 07:37:46,923 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2020-04-18 07:37:49,656 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2020-04-18 07:37:50,288 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 59 [2020-04-18 07:37:50,868 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2020-04-18 07:37:51,894 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-04-18 07:37:54,839 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-04-18 07:37:55,424 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2020-04-18 07:37:56,213 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2020-04-18 07:37:57,397 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-04-18 07:37:58,014 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2020-04-18 07:37:58,375 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-04-18 07:38:00,738 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-04-18 07:38:03,341 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2020-04-18 07:38:03,708 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 Received shutdown request... [2020-04-18 07:38:11,060 WARN L209 SmtUtils]: Removed 3 from assertion stack [2020-04-18 07:38:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-04-18 07:38:11,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:38:11,262 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 07:38:11,266 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 07:38:11,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:38:11 BasicIcfg [2020-04-18 07:38:11,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:38:11,268 INFO L168 Benchmark]: Toolchain (without parser) took 272033.19 ms. Allocated memory was 137.4 MB in the beginning and 329.3 MB in the end (delta: 191.9 MB). Free memory was 100.4 MB in the beginning and 104.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 188.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,268 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.72 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.3 MB in the beginning and 131.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.93 ms. Allocated memory is still 200.8 MB. Free memory was 131.2 MB in the beginning and 128.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,269 INFO L168 Benchmark]: Boogie Preprocessor took 37.02 ms. Allocated memory is still 200.8 MB. Free memory was 128.5 MB in the beginning and 126.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,269 INFO L168 Benchmark]: RCFGBuilder took 627.14 ms. Allocated memory is still 200.8 MB. Free memory was 126.4 MB in the beginning and 94.3 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,269 INFO L168 Benchmark]: TraceAbstraction took 270497.18 ms. Allocated memory was 200.8 MB in the beginning and 329.3 MB in the end (delta: 128.5 MB). Free memory was 93.6 MB in the beginning and 104.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2020-04-18 07:38:11,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.72 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.3 MB in the beginning and 131.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 78.93 ms. Allocated memory is still 200.8 MB. Free memory was 131.2 MB in the beginning and 128.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.02 ms. Allocated memory is still 200.8 MB. Free memory was 128.5 MB in the beginning and 126.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 627.14 ms. Allocated memory is still 200.8 MB. Free memory was 126.4 MB in the beginning and 94.3 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 270497.18 ms. Allocated memory was 200.8 MB in the beginning and 329.3 MB in the end (delta: 128.5 MB). Free memory was 93.6 MB in the beginning and 104.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.1s, 133 ProgramPointsBefore, 40 ProgramPointsAfterwards, 138 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 3051 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 62 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 7699 CheckedPairsTotal, 118 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (748states) and FLOYD_HOARE automaton (currently 93 states, 50 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 4152ms.. - TimeoutResultAtElement [Line: 922]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 922). Cancelled while BasicCegarLoop was constructing difference of abstraction (748states) and FLOYD_HOARE automaton (currently 93 states, 50 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 68 for 4152ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 127 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 270.2s, OverallIterations: 13, TraceHistogramMax: 5, AutomataDifference: 77.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 790 SDtfs, 4938 SDslu, 7839 SDs, 0 SdLazy, 8469 SolverSat, 957 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1274 GetRequests, 693 SyntacticMatches, 1 SemanticMatches, 579 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26396 ImplicationChecksByTransitivity, 142.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=748occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 3804 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown