/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:10:22,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:10:22,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:10:22,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:10:22,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:10:22,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:10:22,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:10:22,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:10:22,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:10:22,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:10:22,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:10:22,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:10:22,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:10:22,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:10:22,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:10:22,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:10:22,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:10:22,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:10:22,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:10:22,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:10:22,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:10:22,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:10:22,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:10:22,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:10:22,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 20:10:22,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 20:10:22,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 20:10:22,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 20:10:22,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 20:10:22,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 20:10:22,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:10:22,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:10:22,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:10:22,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:10:22,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:10:22,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:10:22,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:10:22,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:10:22,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:10:22,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:10:22,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:10:22,750 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.epf [2020-10-15 20:10:22,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:10:22,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:10:22,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:10:22,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:10:22,777 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:10:22,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:10:22,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:10:22,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:10:22,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:10:22,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:10:22,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:10:22,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:10:22,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:10:22,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:10:22,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:10:22,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:10:22,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:10:22,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:10:22,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:10:22,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:10:22,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:10:22,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:10:22,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:10:22,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:10:22,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:10:22,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:10:22,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:10:22,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:10:22,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:10:23,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:10:23,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:10:23,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:10:23,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:10:23,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:10:23,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-10-15 20:10:23,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5201970/264ff59551244268bb4e5310b0ae1bfc/FLAG257c40a2c [2020-10-15 20:10:23,744 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:10:23,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2020-10-15 20:10:23,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5201970/264ff59551244268bb4e5310b0ae1bfc/FLAG257c40a2c [2020-10-15 20:10:24,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5201970/264ff59551244268bb4e5310b0ae1bfc [2020-10-15 20:10:24,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:10:24,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:10:24,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:10:24,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:10:24,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:10:24,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:24,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29114e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24, skipping insertion in model container [2020-10-15 20:10:24,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:24,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:10:24,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:10:24,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:10:24,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:10:24,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:10:24,990 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:10:24,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24 WrapperNode [2020-10-15 20:10:24,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:10:24,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:10:24,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:10:24,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:10:25,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:10:25,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:10:25,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:10:25,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:10:25,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... [2020-10-15 20:10:25,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:10:25,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:10:25,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:10:25,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:10:25,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:10:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-15 20:10:25,166 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-15 20:10:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-15 20:10:25,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-15 20:10:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:10:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:10:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 20:10:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:10:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-15 20:10:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 20:10:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:10:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:10:25,175 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:10:25,654 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:10:25,654 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-15 20:10:25,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:25 BoogieIcfgContainer [2020-10-15 20:10:25,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:10:25,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:10:25,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:10:25,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:10:25,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:10:24" (1/3) ... [2020-10-15 20:10:25,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a421f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:10:25, skipping insertion in model container [2020-10-15 20:10:25,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:24" (2/3) ... [2020-10-15 20:10:25,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a421f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:10:25, skipping insertion in model container [2020-10-15 20:10:25,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:25" (3/3) ... [2020-10-15 20:10:25,667 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-10-15 20:10:25,679 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:10:25,679 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:10:25,688 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 20:10:25,689 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:10:25,727 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,728 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,728 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,728 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,729 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,729 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,729 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,730 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,730 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,730 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,731 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,731 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,731 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,731 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,732 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,732 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,732 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,732 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,734 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,734 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,735 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,735 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,735 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,735 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,736 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,736 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,736 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,736 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,737 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,737 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,737 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,737 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,738 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,738 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,738 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,740 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,740 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,740 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,741 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,741 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,741 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,741 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,741 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,742 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,742 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,742 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,743 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,743 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,743 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,743 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,744 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,744 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,744 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,745 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,745 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,749 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,750 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,750 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,750 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,750 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,750 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,751 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,751 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,753 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,754 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,755 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,755 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,756 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,757 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,757 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,757 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,758 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,758 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,758 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,758 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,760 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,760 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,761 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,761 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,762 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,765 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,773 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,773 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,775 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,775 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,779 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,779 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,779 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,779 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,780 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,780 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,780 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,780 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,788 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,789 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,790 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,790 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,790 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,791 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,791 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,791 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,791 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,792 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,792 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,792 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,792 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,793 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,793 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,793 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,793 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,794 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,794 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,794 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,794 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,794 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,795 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,802 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,802 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,802 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,802 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,803 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,803 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,803 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,803 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,803 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,804 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,805 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,805 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,805 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,806 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:10:25,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 20:10:25,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:10:25,856 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:10:25,856 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:10:25,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:10:25,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:10:25,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:10:25,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:10:25,857 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:10:25,873 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:10:25,876 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-15 20:10:25,879 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-15 20:10:25,881 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-10-15 20:10:25,996 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-10-15 20:10:25,998 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 20:10:26,005 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-15 20:10:26,012 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-15 20:10:28,712 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-15 20:10:28,833 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-15 20:10:29,478 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-15 20:10:29,748 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-15 20:10:29,805 INFO L132 LiptonReduction]: Checked pairs total: 10078 [2020-10-15 20:10:29,805 INFO L134 LiptonReduction]: Total number of compositions: 129 [2020-10-15 20:10:29,811 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-10-15 20:10:29,837 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-10-15 20:10:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-15 20:10:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 20:10:29,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:29,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 20:10:29,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 1 times [2020-10-15 20:10:29,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:29,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093113603] [2020-10-15 20:10:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:30,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093113603] [2020-10-15 20:10:30,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:10:30,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:10:30,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246637459] [2020-10-15 20:10:30,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:10:30,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:10:30,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:30,128 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-10-15 20:10:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:30,206 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-10-15 20:10:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:10:30,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-15 20:10:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:30,229 INFO L225 Difference]: With dead ends: 504 [2020-10-15 20:10:30,230 INFO L226 Difference]: Without dead ends: 460 [2020-10-15 20:10:30,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-15 20:10:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-10-15 20:10:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-15 20:10:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-10-15 20:10:30,322 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-10-15 20:10:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:30,323 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-10-15 20:10:30,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:10:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-10-15 20:10:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 20:10:30,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:30,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:10:30,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:10:30,325 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 1 times [2020-10-15 20:10:30,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:30,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920698144] [2020-10-15 20:10:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:30,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920698144] [2020-10-15 20:10:30,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:10:30,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:10:30,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837367517] [2020-10-15 20:10:30,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:10:30,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:10:30,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:30,397 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-10-15 20:10:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:30,426 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-10-15 20:10:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:10:30,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 20:10:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:30,432 INFO L225 Difference]: With dead ends: 464 [2020-10-15 20:10:30,432 INFO L226 Difference]: Without dead ends: 464 [2020-10-15 20:10:30,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-15 20:10:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-15 20:10:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-15 20:10:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-10-15 20:10:30,466 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-10-15 20:10:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:30,467 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-10-15 20:10:30,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:10:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-10-15 20:10:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 20:10:30,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:30,469 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:10:30,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:10:30,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:30,473 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 1 times [2020-10-15 20:10:30,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:30,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022613529] [2020-10-15 20:10:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022613529] [2020-10-15 20:10:30,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481008792] [2020-10-15 20:10:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:30,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-15 20:10:30,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:30,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:10:30,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-15 20:10:30,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277883522] [2020-10-15 20:10:30,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 20:10:30,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:30,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 20:10:30,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 20:10:30,754 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-10-15 20:10:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:30,863 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-10-15 20:10:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 20:10:30,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-15 20:10:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:30,870 INFO L225 Difference]: With dead ends: 866 [2020-10-15 20:10:30,870 INFO L226 Difference]: Without dead ends: 851 [2020-10-15 20:10:30,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-15 20:10:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-15 20:10:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-10-15 20:10:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-15 20:10:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-10-15 20:10:30,903 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-10-15 20:10:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:30,904 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-10-15 20:10:30,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 20:10:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-10-15 20:10:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 20:10:30,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:30,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:10:31,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-15 20:10:31,122 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 1 times [2020-10-15 20:10:31,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:31,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257595095] [2020-10-15 20:10:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:31,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257595095] [2020-10-15 20:10:31,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:10:31,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:10:31,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497307157] [2020-10-15 20:10:31,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:10:31,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:31,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:10:31,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:31,210 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-10-15 20:10:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:31,230 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-10-15 20:10:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:10:31,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-15 20:10:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:31,233 INFO L225 Difference]: With dead ends: 304 [2020-10-15 20:10:31,233 INFO L226 Difference]: Without dead ends: 304 [2020-10-15 20:10:31,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-15 20:10:31,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-10-15 20:10:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-15 20:10:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-10-15 20:10:31,244 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-10-15 20:10:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:31,246 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-10-15 20:10:31,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:10:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-10-15 20:10:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:10:31,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:31,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:10:31,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:10:31,249 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:31,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 1 times [2020-10-15 20:10:31,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:31,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660974278] [2020-10-15 20:10:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:31,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660974278] [2020-10-15 20:10:31,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:10:31,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:10:31,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343247156] [2020-10-15 20:10:31,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:10:31,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:31,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:10:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:31,300 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2020-10-15 20:10:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:31,342 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2020-10-15 20:10:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:10:31,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:10:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:31,345 INFO L225 Difference]: With dead ends: 372 [2020-10-15 20:10:31,345 INFO L226 Difference]: Without dead ends: 372 [2020-10-15 20:10:31,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:10:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-15 20:10:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2020-10-15 20:10:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-15 20:10:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-10-15 20:10:31,376 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-10-15 20:10:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:31,378 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-10-15 20:10:31,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:10:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-10-15 20:10:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 20:10:31,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:31,384 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-15 20:10:31,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 20:10:31,384 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 2 times [2020-10-15 20:10:31,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:31,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866756240] [2020-10-15 20:10:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866756240] [2020-10-15 20:10:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563840887] [2020-10-15 20:10:31,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:31,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:10:31,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:10:31,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-15 20:10:31,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:31,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:10:31,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-15 20:10:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359850382] [2020-10-15 20:10:31,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 20:10:31,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 20:10:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 20:10:31,630 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 9 states. [2020-10-15 20:10:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:31,725 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-10-15 20:10:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 20:10:31,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-15 20:10:31,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:31,729 INFO L225 Difference]: With dead ends: 542 [2020-10-15 20:10:31,729 INFO L226 Difference]: Without dead ends: 542 [2020-10-15 20:10:31,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-15 20:10:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-15 20:10:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-10-15 20:10:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-15 20:10:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-10-15 20:10:31,745 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-10-15 20:10:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:31,746 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-10-15 20:10:31,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 20:10:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-10-15 20:10:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 20:10:31,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:31,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:10:31,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:31,961 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 1 times [2020-10-15 20:10:31,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:31,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956454726] [2020-10-15 20:10:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:32,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956454726] [2020-10-15 20:10:32,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:10:32,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 20:10:32,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125509127] [2020-10-15 20:10:32,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 20:10:32,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 20:10:32,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-15 20:10:32,378 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 14 states. [2020-10-15 20:10:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:33,761 INFO L93 Difference]: Finished difference Result 703 states and 1483 transitions. [2020-10-15 20:10:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:10:33,762 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-10-15 20:10:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:33,766 INFO L225 Difference]: With dead ends: 703 [2020-10-15 20:10:33,766 INFO L226 Difference]: Without dead ends: 631 [2020-10-15 20:10:33,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:10:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-15 20:10:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 422. [2020-10-15 20:10:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-15 20:10:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 927 transitions. [2020-10-15 20:10:33,780 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 927 transitions. Word has length 21 [2020-10-15 20:10:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:33,780 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 927 transitions. [2020-10-15 20:10:33,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 20:10:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 927 transitions. [2020-10-15 20:10:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 20:10:33,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:33,782 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-15 20:10:33,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 20:10:33,783 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 3 times [2020-10-15 20:10:33,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:33,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895561567] [2020-10-15 20:10:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:33,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895561567] [2020-10-15 20:10:33,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024430053] [2020-10-15 20:10:33,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:33,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 20:10:33,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:10:33,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 20:10:33,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:34,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:10:34,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-15 20:10:34,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700465656] [2020-10-15 20:10:34,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 20:10:34,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 20:10:34,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 20:10:34,024 INFO L87 Difference]: Start difference. First operand 422 states and 927 transitions. Second operand 11 states. [2020-10-15 20:10:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:34,136 INFO L93 Difference]: Finished difference Result 759 states and 1604 transitions. [2020-10-15 20:10:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 20:10:34,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 20:10:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:34,142 INFO L225 Difference]: With dead ends: 759 [2020-10-15 20:10:34,142 INFO L226 Difference]: Without dead ends: 759 [2020-10-15 20:10:34,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-15 20:10:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-15 20:10:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 499. [2020-10-15 20:10:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-15 20:10:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1096 transitions. [2020-10-15 20:10:34,157 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1096 transitions. Word has length 27 [2020-10-15 20:10:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:34,158 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 1096 transitions. [2020-10-15 20:10:34,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 20:10:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1096 transitions. [2020-10-15 20:10:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 20:10:34,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:34,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:10:34,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:34,374 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:34,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:34,374 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 2 times [2020-10-15 20:10:34,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:34,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864932965] [2020-10-15 20:10:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:34,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864932965] [2020-10-15 20:10:34,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966233858] [2020-10-15 20:10:34,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:34,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-15 20:10:34,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:10:34,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-15 20:10:34,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:35,050 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 20:10:35,051 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:10:35,079 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 20:10:35,084 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:10:35,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 20:10:35,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:10:35,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-15 20:10:35,723 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:36,025 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:36,519 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:40,309 INFO L545 ElimStorePlain]: Start of recursive call 2: 18 dim-0 vars, End of recursive call: 18 dim-0 vars, and 1 xjuncts. [2020-10-15 20:10:40,321 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-15 20:10:40,407 INFO L545 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-15 20:10:41,524 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 202 DAG size of output: 120 [2020-10-15 20:10:41,525 INFO L625 ElimStorePlain]: treesize reduction 263, result has 59.3 percent of original size [2020-10-15 20:10:42,976 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 18 dim-0 vars, and 1 xjuncts. [2020-10-15 20:10:42,977 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:383 [2020-10-15 20:10:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 20:10:44,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 20:10:44,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-10-15 20:10:44,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564872656] [2020-10-15 20:10:44,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 20:10:44,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:44,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 20:10:44,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:10:44,344 INFO L87 Difference]: Start difference. First operand 499 states and 1096 transitions. Second operand 13 states. [2020-10-15 20:10:46,790 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-15 20:10:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:47,787 INFO L93 Difference]: Finished difference Result 850 states and 1830 transitions. [2020-10-15 20:10:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 20:10:47,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-15 20:10:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:47,793 INFO L225 Difference]: With dead ends: 850 [2020-10-15 20:10:47,793 INFO L226 Difference]: Without dead ends: 850 [2020-10-15 20:10:47,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=247, Invalid=1915, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 20:10:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-15 20:10:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 563. [2020-10-15 20:10:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-15 20:10:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1242 transitions. [2020-10-15 20:10:47,813 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1242 transitions. Word has length 28 [2020-10-15 20:10:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:47,813 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 1242 transitions. [2020-10-15 20:10:47,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 20:10:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1242 transitions. [2020-10-15 20:10:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 20:10:47,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:47,816 INFO L422 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] [2020-10-15 20:10:48,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:48,030 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:48,031 INFO L82 PathProgramCache]: Analyzing trace with hash 585117152, now seen corresponding path program 1 times [2020-10-15 20:10:48,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:48,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277436402] [2020-10-15 20:10:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 20:10:48,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277436402] [2020-10-15 20:10:48,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206621693] [2020-10-15 20:10:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:48,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 20:10:48,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 20:10:48,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:10:48,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-15 20:10:48,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929062104] [2020-10-15 20:10:48,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 20:10:48,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:48,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 20:10:48,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-15 20:10:48,275 INFO L87 Difference]: Start difference. First operand 563 states and 1242 transitions. Second operand 10 states. [2020-10-15 20:10:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:48,406 INFO L93 Difference]: Finished difference Result 912 states and 1935 transitions. [2020-10-15 20:10:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 20:10:48,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-15 20:10:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:48,412 INFO L225 Difference]: With dead ends: 912 [2020-10-15 20:10:48,412 INFO L226 Difference]: Without dead ends: 912 [2020-10-15 20:10:48,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 20:10:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-15 20:10:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 607. [2020-10-15 20:10:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-15 20:10:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1366 transitions. [2020-10-15 20:10:48,429 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1366 transitions. Word has length 31 [2020-10-15 20:10:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:48,430 INFO L481 AbstractCegarLoop]: Abstraction has 607 states and 1366 transitions. [2020-10-15 20:10:48,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 20:10:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1366 transitions. [2020-10-15 20:10:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 20:10:48,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:48,432 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-15 20:10:48,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-15 20:10:48,646 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash 225739520, now seen corresponding path program 4 times [2020-10-15 20:10:48,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:48,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914597037] [2020-10-15 20:10:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:48,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914597037] [2020-10-15 20:10:48,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169415442] [2020-10-15 20:10:48,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:48,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:10:48,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:10:48,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 20:10:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:48,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:10:48,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-15 20:10:48,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948255193] [2020-10-15 20:10:48,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 20:10:48,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:10:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 20:10:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 20:10:48,898 INFO L87 Difference]: Start difference. First operand 607 states and 1366 transitions. Second operand 13 states. [2020-10-15 20:10:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:10:49,060 INFO L93 Difference]: Finished difference Result 984 states and 2121 transitions. [2020-10-15 20:10:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 20:10:49,061 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-15 20:10:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:10:49,066 INFO L225 Difference]: With dead ends: 984 [2020-10-15 20:10:49,066 INFO L226 Difference]: Without dead ends: 984 [2020-10-15 20:10:49,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-15 20:10:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-15 20:10:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 684. [2020-10-15 20:10:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-10-15 20:10:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1535 transitions. [2020-10-15 20:10:49,086 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1535 transitions. Word has length 34 [2020-10-15 20:10:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:10:49,086 INFO L481 AbstractCegarLoop]: Abstraction has 684 states and 1535 transitions. [2020-10-15 20:10:49,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 20:10:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1535 transitions. [2020-10-15 20:10:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 20:10:49,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:10:49,088 INFO L422 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] [2020-10-15 20:10:49,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:49,303 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:10:49,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:10:49,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1848776679, now seen corresponding path program 1 times [2020-10-15 20:10:49,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:10:49,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386638285] [2020-10-15 20:10:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:10:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:10:50,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386638285] [2020-10-15 20:10:50,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248992201] [2020-10-15 20:10:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:10:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:10:50,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-15 20:10:50,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:10:50,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 20:10:50,226 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:10:50,254 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 20:10:50,256 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:10:50,257 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 20:10:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:10:50,620 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:10:50,620 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:10:50,638 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:10:50,640 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:10:50,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:10:51,112 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:10:51,136 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-15 20:10:51,146 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:10:51,150 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-15 20:10:51,188 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:51,330 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:51,630 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:51,936 INFO L721 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:52,419 INFO L721 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:10:53,074 INFO L721 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:13:43,168 INFO L545 ElimStorePlain]: Start of recursive call 3: 40 dim-0 vars, End of recursive call: 40 dim-0 vars, and 1 xjuncts. [2020-10-15 20:13:50,435 WARN L193 SmtUtils]: Spent 7.27 s on a formula simplification. DAG size of input: 294 DAG size of output: 235 [2020-10-15 20:13:50,437 INFO L625 ElimStorePlain]: treesize reduction 276, result has 75.9 percent of original size [2020-10-15 20:13:53,738 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 35 dim-0 vars, and 1 xjuncts. [2020-10-15 20:13:53,739 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:759 [2020-10-15 20:13:57,122 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-15 20:13:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:13:57,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:13:57,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2020-10-15 20:13:57,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105937193] [2020-10-15 20:13:57,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 20:13:57,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:13:57,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 20:13:57,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 20:13:57,145 INFO L87 Difference]: Start difference. First operand 684 states and 1535 transitions. Second operand 37 states. [2020-10-15 20:13:58,580 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-15 20:13:58,921 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-15 20:13:59,303 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-15 20:13:59,556 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-15 20:13:59,846 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-15 20:14:00,071 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-15 20:14:00,772 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 20:14:02,768 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 254 DAG size of output: 252 [2020-10-15 20:14:03,021 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-15 20:14:03,499 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-15 20:14:04,232 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 20:14:04,609 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-15 20:14:05,055 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-15 20:14:05,587 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-15 20:14:06,049 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-15 20:14:06,787 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-15 20:14:08,798 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 283 DAG size of output: 277 [2020-10-15 20:14:09,075 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-15 20:14:09,578 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-15 20:14:10,019 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-15 20:14:10,498 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-15 20:14:10,970 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-15 20:14:11,421 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-15 20:14:11,790 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-15 20:14:12,182 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-15 20:14:12,603 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-15 20:14:13,052 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-15 20:14:13,438 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-15 20:14:13,746 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-15 20:14:14,127 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-15 20:14:14,626 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-15 20:14:14,953 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-15 20:14:16,626 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-15 20:14:17,033 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-15 20:14:17,819 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-15 20:14:18,069 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-15 20:14:18,332 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-15 20:14:18,860 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-15 20:14:19,142 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-15 20:14:19,508 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-15 20:14:20,229 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-15 20:14:20,831 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-15 20:14:22,189 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-15 20:14:23,184 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-15 20:14:23,543 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-15 20:14:23,937 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-15 20:14:24,469 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-15 20:14:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:14:24,669 INFO L93 Difference]: Finished difference Result 2296 states and 4900 transitions. [2020-10-15 20:14:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-15 20:14:24,671 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2020-10-15 20:14:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:14:24,680 INFO L225 Difference]: With dead ends: 2296 [2020-10-15 20:14:24,680 INFO L226 Difference]: Without dead ends: 2144 [2020-10-15 20:14:24,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=1352, Invalid=10420, Unknown=0, NotChecked=0, Total=11772 [2020-10-15 20:14:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-15 20:14:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 850. [2020-10-15 20:14:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-15 20:14:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1934 transitions. [2020-10-15 20:14:24,714 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1934 transitions. Word has length 36 [2020-10-15 20:14:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:14:24,714 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1934 transitions. [2020-10-15 20:14:24,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 20:14:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1934 transitions. [2020-10-15 20:14:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 20:14:24,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:14:24,716 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:14:24,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:24,931 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:14:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:14:24,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1392133555, now seen corresponding path program 2 times [2020-10-15 20:14:24,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:14:24,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768602769] [2020-10-15 20:14:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:14:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:14:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 20:14:25,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768602769] [2020-10-15 20:14:25,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365594100] [2020-10-15 20:14:25,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:25,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:14:25,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:14:25,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 20:14:25,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:14:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 20:14:25,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:14:25,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-15 20:14:25,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542240478] [2020-10-15 20:14:25,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 20:14:25,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:14:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 20:14:25,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 20:14:25,203 INFO L87 Difference]: Start difference. First operand 850 states and 1934 transitions. Second operand 12 states. [2020-10-15 20:14:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:14:25,408 INFO L93 Difference]: Finished difference Result 1531 states and 3311 transitions. [2020-10-15 20:14:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 20:14:25,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-15 20:14:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:14:25,415 INFO L225 Difference]: With dead ends: 1531 [2020-10-15 20:14:25,415 INFO L226 Difference]: Without dead ends: 1531 [2020-10-15 20:14:25,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:14:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-10-15 20:14:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 850. [2020-10-15 20:14:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-15 20:14:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1934 transitions. [2020-10-15 20:14:25,440 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1934 transitions. Word has length 38 [2020-10-15 20:14:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:14:25,440 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1934 transitions. [2020-10-15 20:14:25,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 20:14:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1934 transitions. [2020-10-15 20:14:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 20:14:25,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:14:25,443 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-10-15 20:14:25,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-15 20:14:25,658 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:14:25,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:14:25,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1525277201, now seen corresponding path program 5 times [2020-10-15 20:14:25,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:14:25,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121622701] [2020-10-15 20:14:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:14:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:14:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:14:25,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121622701] [2020-10-15 20:14:25,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365519968] [2020-10-15 20:14:25,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:25,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-15 20:14:25,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:14:25,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 20:14:25,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:14:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:14:25,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 20:14:25,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-15 20:14:25,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661066079] [2020-10-15 20:14:25,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 20:14:25,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:14:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 20:14:25,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-15 20:14:25,930 INFO L87 Difference]: Start difference. First operand 850 states and 1934 transitions. Second operand 8 states. [2020-10-15 20:14:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:14:25,989 INFO L93 Difference]: Finished difference Result 1901 states and 4130 transitions. [2020-10-15 20:14:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 20:14:25,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-15 20:14:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:14:25,996 INFO L225 Difference]: With dead ends: 1901 [2020-10-15 20:14:25,996 INFO L226 Difference]: Without dead ends: 1151 [2020-10-15 20:14:25,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-15 20:14:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-15 20:14:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 919. [2020-10-15 20:14:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-10-15 20:14:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1913 transitions. [2020-10-15 20:14:26,017 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1913 transitions. Word has length 41 [2020-10-15 20:14:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:14:26,018 INFO L481 AbstractCegarLoop]: Abstraction has 919 states and 1913 transitions. [2020-10-15 20:14:26,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 20:14:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1913 transitions. [2020-10-15 20:14:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 20:14:26,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:14:26,020 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:14:26,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:26,235 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:14:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:14:26,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1282653762, now seen corresponding path program 3 times [2020-10-15 20:14:26,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:14:26,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64424758] [2020-10-15 20:14:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:14:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:14:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 20:14:26,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64424758] [2020-10-15 20:14:26,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431751985] [2020-10-15 20:14:26,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:26,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-15 20:14:26,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:14:26,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:14:26,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:14:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 20:14:26,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:14:26,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-10-15 20:14:26,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907927363] [2020-10-15 20:14:26,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 20:14:26,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:14:26,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 20:14:26,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 20:14:26,575 INFO L87 Difference]: Start difference. First operand 919 states and 1913 transitions. Second operand 12 states. [2020-10-15 20:14:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:14:26,786 INFO L93 Difference]: Finished difference Result 1454 states and 2944 transitions. [2020-10-15 20:14:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 20:14:26,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-15 20:14:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:14:26,792 INFO L225 Difference]: With dead ends: 1454 [2020-10-15 20:14:26,793 INFO L226 Difference]: Without dead ends: 1127 [2020-10-15 20:14:26,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:14:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-15 20:14:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 882. [2020-10-15 20:14:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-15 20:14:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1819 transitions. [2020-10-15 20:14:26,811 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1819 transitions. Word has length 45 [2020-10-15 20:14:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:14:26,811 INFO L481 AbstractCegarLoop]: Abstraction has 882 states and 1819 transitions. [2020-10-15 20:14:26,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 20:14:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1819 transitions. [2020-10-15 20:14:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 20:14:26,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:14:26,814 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:14:27,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-15 20:14:27,027 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:14:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:14:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2015805632, now seen corresponding path program 4 times [2020-10-15 20:14:27,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:14:27,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558475387] [2020-10-15 20:14:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:14:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:14:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 20:14:27,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558475387] [2020-10-15 20:14:27,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238330236] [2020-10-15 20:14:27,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:27,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:14:27,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:14:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:14:27,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:14:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 20:14:27,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:14:27,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-15 20:14:27,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335388537] [2020-10-15 20:14:27,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 20:14:27,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:14:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 20:14:27,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 20:14:27,263 INFO L87 Difference]: Start difference. First operand 882 states and 1819 transitions. Second operand 12 states. [2020-10-15 20:14:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:14:27,459 INFO L93 Difference]: Finished difference Result 1257 states and 2501 transitions. [2020-10-15 20:14:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 20:14:27,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-15 20:14:27,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:14:27,466 INFO L225 Difference]: With dead ends: 1257 [2020-10-15 20:14:27,466 INFO L226 Difference]: Without dead ends: 1177 [2020-10-15 20:14:27,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-15 20:14:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-10-15 20:14:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 778. [2020-10-15 20:14:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-15 20:14:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-15 20:14:27,483 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-15 20:14:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:14:27,483 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-15 20:14:27,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 20:14:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-15 20:14:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 20:14:27,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:14:27,485 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:14:27,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-15 20:14:27,700 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:14:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:14:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1958720896, now seen corresponding path program 5 times [2020-10-15 20:14:27,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:14:27,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529497134] [2020-10-15 20:14:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:14:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:14:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 20:14:27,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529497134] [2020-10-15 20:14:27,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113617019] [2020-10-15 20:14:27,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:27,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-15 20:14:27,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:14:27,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:14:27,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:14:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 20:14:28,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:14:28,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-15 20:14:28,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678208753] [2020-10-15 20:14:28,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 20:14:28,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:14:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 20:14:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 20:14:28,013 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 14 states. [2020-10-15 20:14:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:14:28,279 INFO L93 Difference]: Finished difference Result 1374 states and 2723 transitions. [2020-10-15 20:14:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:14:28,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-15 20:14:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:14:28,285 INFO L225 Difference]: With dead ends: 1374 [2020-10-15 20:14:28,285 INFO L226 Difference]: Without dead ends: 1364 [2020-10-15 20:14:28,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-15 20:14:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-15 20:14:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 778. [2020-10-15 20:14:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-15 20:14:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-15 20:14:28,302 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-15 20:14:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:14:28,302 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-15 20:14:28,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 20:14:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-15 20:14:28,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 20:14:28,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:14:28,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:14:28,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-15 20:14:28,519 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:14:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:14:28,520 INFO L82 PathProgramCache]: Analyzing trace with hash 579552405, now seen corresponding path program 2 times [2020-10-15 20:14:28,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:14:28,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379461555] [2020-10-15 20:14:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:14:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:14:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:14:29,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379461555] [2020-10-15 20:14:29,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756088080] [2020-10-15 20:14:29,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:14:29,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:14:29,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:14:29,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 77 conjunts are in the unsatisfiable core [2020-10-15 20:14:29,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:14:30,104 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 20:14:30,105 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:14:30,137 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 20:14:30,139 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:14:30,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 20:14:30,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:14:30,666 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:14:30,667 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:14:30,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:14:30,688 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:14:30,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:14:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:14:31,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:14:31,178 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:14:31,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:14:31,205 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:14:31,205 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:14:32,021 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:14:32,037 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-15 20:14:32,060 INFO L545 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-15 20:14:32,071 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-15 20:14:32,083 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:14:32,182 INFO L625 ElimStorePlain]: treesize reduction 120, result has 35.1 percent of original size [2020-10-15 20:14:32,185 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:14:32,186 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:65 [2020-10-15 20:14:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:14:32,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:14:32,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2020-10-15 20:14:32,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4627974] [2020-10-15 20:14:32,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-15 20:14:32,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:14:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-15 20:14:32,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 20:14:32,348 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 49 states. [2020-10-15 20:14:33,431 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-15 20:14:34,067 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-15 20:14:34,483 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-10-15 20:14:34,969 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-15 20:14:35,247 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-15 20:14:35,759 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-15 20:14:36,035 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-15 20:14:36,642 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-15 20:14:36,919 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 20:14:37,313 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-15 20:14:37,707 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-15 20:14:38,332 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-15 20:14:39,237 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-15 20:14:39,743 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-15 20:14:40,312 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-15 20:14:40,485 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-15 20:14:40,962 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-15 20:14:41,589 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-15 20:14:41,931 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-15 20:14:42,610 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-15 20:14:43,249 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-10-15 20:14:43,650 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-15 20:14:44,311 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-15 20:14:44,896 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-15 20:14:46,052 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-15 20:14:46,768 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-15 20:14:47,437 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-15 20:14:47,846 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-15 20:14:48,321 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-15 20:14:48,852 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-15 20:14:49,537 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-15 20:14:50,212 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-15 20:14:50,750 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-15 20:14:51,534 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-15 20:14:51,912 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-15 20:14:52,441 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-15 20:14:53,074 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-15 20:14:53,846 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-15 20:14:54,908 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-15 20:14:55,437 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-15 20:14:56,203 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-15 20:14:56,659 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-15 20:14:57,135 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-15 20:14:58,167 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-15 20:14:58,996 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-15 20:14:59,763 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-15 20:15:00,525 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-15 20:15:01,322 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-15 20:15:02,263 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-15 20:15:03,195 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-15 20:15:04,098 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-15 20:15:04,806 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-15 20:15:05,840 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-15 20:15:06,900 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-15 20:15:07,546 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-15 20:15:08,452 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-15 20:15:09,087 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-15 20:15:09,514 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-15 20:15:10,546 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-15 20:15:11,057 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-15 20:15:11,639 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 20:15:12,719 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-15 20:15:13,496 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-15 20:15:14,289 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-15 20:15:16,043 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-15 20:15:16,427 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-15 20:15:17,527 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-15 20:15:18,186 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-15 20:15:18,770 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-15 20:15:19,134 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-15 20:15:19,630 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-15 20:15:20,047 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-15 20:15:20,622 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-15 20:15:21,212 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-15 20:15:22,269 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-15 20:15:22,541 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-15 20:15:22,982 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-15 20:15:23,317 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-15 20:15:24,230 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-15 20:15:24,601 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-15 20:15:24,943 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-15 20:15:25,658 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-15 20:15:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:15:25,680 INFO L93 Difference]: Finished difference Result 1670 states and 3308 transitions. [2020-10-15 20:15:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-15 20:15:25,682 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 51 [2020-10-15 20:15:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:15:25,686 INFO L225 Difference]: With dead ends: 1670 [2020-10-15 20:15:25,686 INFO L226 Difference]: Without dead ends: 874 [2020-10-15 20:15:25,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6719 ImplicationChecksByTransitivity, 47.3s TimeCoverageRelationStatistics Valid=2070, Invalid=19100, Unknown=0, NotChecked=0, Total=21170 [2020-10-15 20:15:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-10-15 20:15:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 644. [2020-10-15 20:15:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-15 20:15:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1286 transitions. [2020-10-15 20:15:25,704 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1286 transitions. Word has length 51 [2020-10-15 20:15:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:15:25,704 INFO L481 AbstractCegarLoop]: Abstraction has 644 states and 1286 transitions. [2020-10-15 20:15:25,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-15 20:15:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1286 transitions. [2020-10-15 20:15:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 20:15:25,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:15:25,706 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:15:25,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 20:15:25,921 INFO L429 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:15:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:15:25,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1304222551, now seen corresponding path program 3 times [2020-10-15 20:15:25,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:15:25,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101003199] [2020-10-15 20:15:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:15:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:15:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:15:28,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101003199] [2020-10-15 20:15:28,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627298504] [2020-10-15 20:15:28,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:15:28,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 20:15:28,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:15:28,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 82 conjunts are in the unsatisfiable core [2020-10-15 20:15:28,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:15:29,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 20:15:29,178 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:15:29,236 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.9 percent of original size [2020-10-15 20:15:29,237 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:15:29,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:53 [2020-10-15 20:15:30,289 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:15:30,290 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 76 [2020-10-15 20:15:30,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:30,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:30,303 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-15 20:15:30,456 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-15 20:15:30,457 INFO L625 ElimStorePlain]: treesize reduction 37, result has 69.4 percent of original size [2020-10-15 20:15:30,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,464 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:30,469 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-15 20:15:30,470 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:79, output treesize:73 [2020-10-15 20:15:30,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,479 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,479 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:30,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:31,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:31,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:31,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:31,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:32,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:32,754 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-10-15 20:15:32,754 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:32,768 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_104|], 2=[v_prenex_2]} [2020-10-15 20:15:32,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-15 20:15:32,778 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:15:32,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:15:32,904 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:15:32,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 77 [2020-10-15 20:15:32,906 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-15 20:15:32,907 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-15 20:15:33,110 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-15 20:15:33,111 INFO L625 ElimStorePlain]: treesize reduction 33, result has 79.4 percent of original size [2020-10-15 20:15:33,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,118 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,127 INFO L545 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-10-15 20:15:33,128 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 11 variables, input treesize:109, output treesize:98 [2020-10-15 20:15:33,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,130 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,130 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,312 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:33,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,317 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-10-15 20:15:34,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,335 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_105|], 2=[v_prenex_6]} [2020-10-15 20:15:34,345 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-15 20:15:34,345 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:15:34,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:15:34,468 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:15:34,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 77 [2020-10-15 20:15:34,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-15 20:15:34,470 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-15 20:15:34,691 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-15 20:15:34,692 INFO L625 ElimStorePlain]: treesize reduction 33, result has 79.4 percent of original size [2020-10-15 20:15:34,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,709 INFO L545 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-10-15 20:15:34,709 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 11 variables, input treesize:109, output treesize:98 [2020-10-15 20:15:34,710 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,713 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,714 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,714 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:34,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:35,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:35,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:35,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:35,557 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:35,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:35,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:36,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,464 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:36,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:36,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:37,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:37,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:37,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:37,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:37,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:15:37,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:38,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:15:38,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:15:38,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:15:38,451 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-15 20:15:38,454 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-15 20:15:38,456 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2020-10-15 20:15:38,462 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:15:38,490 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:15:38,490 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 45 [2020-10-15 20:15:38,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:38,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:15:38,500 INFO L545 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-15 20:15:38,649 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-15 20:15:38,651 INFO L625 ElimStorePlain]: treesize reduction 114, result has 35.6 percent of original size [2020-10-15 20:15:38,657 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-15 20:15:38,657 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:186, output treesize:70 [2020-10-15 20:15:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:15:39,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:15:39,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32] total 62 [2020-10-15 20:15:39,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266327518] [2020-10-15 20:15:39,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-15 20:15:39,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:15:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-15 20:15:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3642, Unknown=0, NotChecked=0, Total=4032 [2020-10-15 20:15:39,128 INFO L87 Difference]: Start difference. First operand 644 states and 1286 transitions. Second operand 64 states. [2020-10-15 20:15:39,992 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 27 [2020-10-15 20:15:40,436 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2020-10-15 20:15:41,039 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-10-15 20:15:42,024 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-15 20:15:43,379 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-10-15 20:15:43,901 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-10-15 20:15:44,446 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-15 20:15:45,063 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-15 20:15:45,425 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-15 20:15:46,170 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2020-10-15 20:15:46,932 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-10-15 20:15:47,778 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-15 20:15:48,765 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-10-15 20:15:49,364 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-15 20:15:50,780 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-15 20:15:51,754 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-15 20:15:54,543 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-15 20:15:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:15:55,503 INFO L93 Difference]: Finished difference Result 1167 states and 2297 transitions. [2020-10-15 20:15:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 20:15:55,505 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 66 [2020-10-15 20:15:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:15:55,508 INFO L225 Difference]: With dead ends: 1167 [2020-10-15 20:15:55,508 INFO L226 Difference]: Without dead ends: 468 [2020-10-15 20:15:55,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=1060, Invalid=8642, Unknown=0, NotChecked=0, Total=9702 [2020-10-15 20:15:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-15 20:15:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2020-10-15 20:15:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-15 20:15:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 936 transitions. [2020-10-15 20:15:55,517 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 936 transitions. Word has length 66 [2020-10-15 20:15:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:15:55,518 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 936 transitions. [2020-10-15 20:15:55,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-15 20:15:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 936 transitions. [2020-10-15 20:15:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 20:15:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:15:55,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:15:55,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:15:55,726 INFO L429 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:15:55,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:15:55,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1435425444, now seen corresponding path program 4 times [2020-10-15 20:15:55,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:15:55,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508791824] [2020-10-15 20:15:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:15:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:15:56,183 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2020-10-15 20:15:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:15:58,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508791824] [2020-10-15 20:15:58,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352409677] [2020-10-15 20:15:58,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:15:59,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:15:59,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:15:59,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 94 conjunts are in the unsatisfiable core [2020-10-15 20:15:59,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:15:59,474 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 20:15:59,474 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:15:59,526 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 20:15:59,527 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:15:59,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 20:16:00,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:16:00,691 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:16:00,692 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:16:00,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:16:00,734 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:16:00,735 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:16:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:16:01,826 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:16:01,827 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:16:01,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:16:01,871 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:16:01,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:16:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:16:03,008 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:16:03,009 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:16:03,051 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:16:03,053 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:16:03,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:16:05,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:16:05,133 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-15 20:16:05,154 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:16:05,329 INFO L545 ElimStorePlain]: Start of recursive call 2: 12 dim-0 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-10-15 20:16:05,339 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-15 20:16:05,347 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:16:05,460 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 22 [2020-10-15 20:16:05,461 INFO L625 ElimStorePlain]: treesize reduction 286, result has 14.6 percent of original size [2020-10-15 20:16:05,464 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:16:05,464 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:49 [2020-10-15 20:16:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 20:16:05,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:16:05,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30] total 62 [2020-10-15 20:16:05,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863682058] [2020-10-15 20:16:05,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-15 20:16:05,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:16:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-15 20:16:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3714, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 20:16:05,724 INFO L87 Difference]: Start difference. First operand 468 states and 936 transitions. Second operand 63 states. [2020-10-15 20:16:06,747 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-15 20:16:07,236 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-15 20:16:08,164 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-15 20:16:08,714 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-15 20:16:09,520 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-15 20:16:10,100 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-15 20:16:10,601 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-15 20:16:11,349 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-15 20:16:12,300 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-15 20:16:13,181 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-15 20:16:14,316 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-15 20:16:15,557 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2020-10-15 20:16:17,049 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-10-15 20:16:18,438 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-15 20:16:19,641 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-15 20:16:20,989 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-15 20:16:22,678 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-10-15 20:16:24,867 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2020-10-15 20:16:26,620 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-15 20:16:28,058 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-15 20:16:29,630 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2020-10-15 20:16:31,474 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2020-10-15 20:16:34,069 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2020-10-15 20:16:36,015 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-15 20:16:38,006 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-15 20:16:40,090 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-15 20:16:42,033 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-15 20:16:44,054 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-10-15 20:16:45,917 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-15 20:16:48,657 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-10-15 20:16:51,167 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2020-10-15 20:16:52,791 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-15 20:16:54,488 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-15 20:16:55,956 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-15 20:16:58,464 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-15 20:17:00,392 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2020-10-15 20:17:01,742 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-15 20:17:03,075 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-15 20:17:04,413 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-15 20:17:06,484 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-15 20:17:07,774 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-15 20:17:08,310 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-15 20:17:08,920 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-15 20:17:09,496 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-15 20:17:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:17:10,719 INFO L93 Difference]: Finished difference Result 559 states and 1118 transitions. [2020-10-15 20:17:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 20:17:10,722 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 73 [2020-10-15 20:17:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:17:10,726 INFO L225 Difference]: With dead ends: 559 [2020-10-15 20:17:10,726 INFO L226 Difference]: Without dead ends: 559 [2020-10-15 20:17:10,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3031 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=994, Invalid=10996, Unknown=0, NotChecked=0, Total=11990 [2020-10-15 20:17:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-15 20:17:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 524. [2020-10-15 20:17:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-15 20:17:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1048 transitions. [2020-10-15 20:17:10,734 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1048 transitions. Word has length 73 [2020-10-15 20:17:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:17:10,734 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 1048 transitions. [2020-10-15 20:17:10,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-15 20:17:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1048 transitions. [2020-10-15 20:17:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 20:17:10,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:17:10,736 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:17:10,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:17:10,949 INFO L429 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:17:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:17:10,950 INFO L82 PathProgramCache]: Analyzing trace with hash -145619693, now seen corresponding path program 5 times [2020-10-15 20:17:10,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:17:10,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054495604] [2020-10-15 20:17:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:17:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:17:12,133 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-15 20:17:12,835 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-10-15 20:17:13,574 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-15 20:17:14,367 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-10-15 20:17:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:17:16,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054495604] [2020-10-15 20:17:16,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322851819] [2020-10-15 20:17:16,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:17:16,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-15 20:17:16,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:17:16,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 111 conjunts are in the unsatisfiable core [2020-10-15 20:17:16,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:17:17,108 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-15 20:17:17,108 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:17:17,179 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-15 20:17:17,181 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:17:17,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-15 20:17:18,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:17:18,863 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:17:18,864 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:17:18,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:17:18,927 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:17:18,928 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:17:20,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:17:20,547 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:17:20,548 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:17:20,608 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:17:20,611 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:17:20,611 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:17:22,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:17:22,245 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:17:22,245 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:17:22,307 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:17:22,310 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:17:22,310 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:17:24,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-15 20:17:24,021 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-15 20:17:24,021 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 20:17:24,083 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 20:17:24,085 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 20:17:24,086 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-15 20:17:27,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-15 20:17:27,659 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-15 20:17:27,710 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:17:27,804 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:17:27,957 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-15 20:17:29,719 INFO L545 ElimStorePlain]: Start of recursive call 2: 19 dim-0 vars, End of recursive call: 19 dim-0 vars, and 1 xjuncts. [2020-10-15 20:17:29,742 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-15 20:17:29,752 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:17:30,061 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 30 [2020-10-15 20:17:30,063 INFO L625 ElimStorePlain]: treesize reduction 470, result has 12.1 percent of original size [2020-10-15 20:17:30,066 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 20:17:30,066 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:65 [2020-10-15 20:17:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:17:30,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:17:30,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 72 [2020-10-15 20:17:30,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549565871] [2020-10-15 20:17:30,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-15 20:17:30,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:17:30,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-15 20:17:30,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=5036, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 20:17:30,598 INFO L87 Difference]: Start difference. First operand 524 states and 1048 transitions. Second operand 73 states. [2020-10-15 20:17:33,879 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-15 20:17:34,688 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-15 20:17:35,793 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2020-10-15 20:17:37,095 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-15 20:17:38,541 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-15 20:17:40,140 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-15 20:17:41,539 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-15 20:17:43,035 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-15 20:17:44,818 WARN L193 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-10-15 20:17:47,085 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-15 20:17:49,367 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-15 20:17:51,301 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-15 20:17:53,255 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-15 20:17:55,596 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-15 20:17:59,171 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2020-10-15 20:18:02,092 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-15 20:18:04,622 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-15 20:18:07,094 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2020-10-15 20:18:09,865 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-10-15 20:18:13,821 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2020-10-15 20:18:17,293 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 20:18:21,255 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-15 20:18:25,413 WARN L193 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 131 DAG size of output: 99 [2020-10-15 20:18:28,709 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-15 20:18:32,178 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-15 20:18:35,716 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-10-15 20:18:40,410 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-10-15 20:18:44,548 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 142 DAG size of output: 107 [2020-10-15 20:18:47,610 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-15 20:18:50,781 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-15 20:18:53,925 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-15 20:18:58,419 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-15 20:19:02,387 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2020-10-15 20:19:04,867 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-15 20:19:07,477 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-15 20:19:10,117 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-15 20:19:13,813 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-15 20:19:16,891 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2020-10-15 20:19:18,743 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-15 20:19:20,850 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-15 20:19:22,979 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-10-15 20:19:25,938 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-15 20:19:27,903 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-15 20:19:28,696 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-15 20:19:29,702 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 20:19:30,937 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-15 20:19:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:19:31,863 INFO L93 Difference]: Finished difference Result 531 states and 1055 transitions. [2020-10-15 20:19:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-15 20:19:31,869 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 81 [2020-10-15 20:19:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:19:31,869 INFO L225 Difference]: With dead ends: 531 [2020-10-15 20:19:31,869 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 20:19:31,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 106.1s TimeCoverageRelationStatistics Valid=1165, Invalid=13841, Unknown=0, NotChecked=0, Total=15006 [2020-10-15 20:19:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 20:19:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 20:19:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 20:19:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 20:19:31,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-10-15 20:19:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:19:31,872 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 20:19:31,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-15 20:19:31,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 20:19:31,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 20:19:32,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:19:32,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:19:32 BasicIcfg [2020-10-15 20:19:32,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:19:32,081 INFO L168 Benchmark]: Toolchain (without parser) took 548032.38 ms. Allocated memory was 251.1 MB in the beginning and 405.3 MB in the end (delta: 154.1 MB). Free memory was 205.6 MB in the beginning and 289.3 MB in the end (delta: -83.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,081 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 251.1 MB. Free memory was 229.2 MB in the beginning and 228.3 MB in the end (delta: 839.1 kB). Peak memory consumption was 839.1 kB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 940.39 ms. Allocated memory was 251.1 MB in the beginning and 313.0 MB in the end (delta: 61.9 MB). Free memory was 205.6 MB in the beginning and 238.4 MB in the end (delta: -32.9 MB). Peak memory consumption was 39.1 MB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.83 ms. Allocated memory is still 313.0 MB. Free memory was 238.4 MB in the beginning and 235.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,084 INFO L168 Benchmark]: Boogie Preprocessor took 37.49 ms. Allocated memory is still 313.0 MB. Free memory was 235.9 MB in the beginning and 233.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,084 INFO L168 Benchmark]: RCFGBuilder took 565.10 ms. Allocated memory is still 313.0 MB. Free memory was 233.4 MB in the beginning and 200.5 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,084 INFO L168 Benchmark]: TraceAbstraction took 546422.12 ms. Allocated memory was 313.0 MB in the beginning and 405.3 MB in the end (delta: 92.3 MB). Free memory was 200.5 MB in the beginning and 289.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:19:32,090 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 251.1 MB. Free memory was 229.2 MB in the beginning and 228.3 MB in the end (delta: 839.1 kB). Peak memory consumption was 839.1 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 940.39 ms. Allocated memory was 251.1 MB in the beginning and 313.0 MB in the end (delta: 61.9 MB). Free memory was 205.6 MB in the beginning and 238.4 MB in the end (delta: -32.9 MB). Peak memory consumption was 39.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 61.83 ms. Allocated memory is still 313.0 MB. Free memory was 238.4 MB in the beginning and 235.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 37.49 ms. Allocated memory is still 313.0 MB. Free memory was 235.9 MB in the beginning and 233.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 565.10 ms. Allocated memory is still 313.0 MB. Free memory was 233.4 MB in the beginning and 200.5 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 546422.12 ms. Allocated memory was 313.0 MB in the beginning and 405.3 MB in the end (delta: 92.3 MB). Free memory was 200.5 MB in the beginning and 289.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4309 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 63 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 355 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 137 PlacesBefore, 40 PlacesAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 129 TotalNumberOfCompositions, 10078 MoverChecksTotal - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 546.2s, OverallIterations: 21, TraceHistogramMax: 6, AutomataDifference: 290.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 1471 SDtfs, 7836 SDslu, 16914 SDs, 0 SdLazy, 21804 SolverSat, 2061 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1440 GetRequests, 632 SyntacticMatches, 22 SemanticMatches, 786 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21220 ImplicationChecksByTransitivity, 257.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 5636 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 244.9s InterpolantComputationTime, 1418 NumberOfCodeBlocks, 1411 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1381 ConstructedInterpolants, 60 QuantifiedInterpolants, 1569224 SizeOfPredicates, 285 NumberOfNonLiveVariables, 4841 ConjunctsInSsa, 556 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 316/1630 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...