/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:32:36,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:32:36,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:32:36,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:32:36,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:32:36,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:32:36,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:32:36,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:32:36,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:32:36,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:32:36,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:32:36,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:32:36,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:32:36,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:32:36,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:32:36,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:32:36,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:32:36,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:32:36,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:32:36,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:32:36,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:32:36,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:32:36,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:32:36,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:32:36,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:32:36,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:32:36,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:32:36,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:32:36,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:32:36,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:32:36,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:32:36,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:32:36,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:32:36,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:32:36,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:32:36,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:32:36,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:32:36,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:32:36,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:32:36,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:32:36,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:32:36,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:32:36,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:32:36,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:32:36,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:32:36,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:32:36,841 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:32:36,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:32:36,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:32:36,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:32:36,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:32:36,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:32:36,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:32:36,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:32:36,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:32:36,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:32:36,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:32:36,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:32:36,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:32:36,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:32:36,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:32:36,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:32:36,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:32:36,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:32:36,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:32:36,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:32:36,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:32:36,846 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:32:36,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:32:36,846 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:32:36,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:32:36,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:32:37,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:32:37,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:32:37,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:32:37,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:32:37,155 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:32:37,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-04-18 07:32:37,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1cd8913/878aca136418440e85886f2373fd54ec/FLAGe12ad3c8c [2020-04-18 07:32:37,790 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:32:37,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2020-04-18 07:32:37,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1cd8913/878aca136418440e85886f2373fd54ec/FLAGe12ad3c8c [2020-04-18 07:32:38,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1cd8913/878aca136418440e85886f2373fd54ec [2020-04-18 07:32:38,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:32:38,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:32:38,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:32:38,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:32:38,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:32:38,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:38" (1/1) ... [2020-04-18 07:32:38,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac59883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:38, skipping insertion in model container [2020-04-18 07:32:38,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:38" (1/1) ... [2020-04-18 07:32:38,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:32:38,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:32:38,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:32:38,784 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:32:38,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:32:39,039 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:32:39,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39 WrapperNode [2020-04-18 07:32:39,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:32:39,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:32:39,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:32:39,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:32:39,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:32:39,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:32:39,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:32:39,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:32:39,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... [2020-04-18 07:32:39,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:32:39,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:32:39,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:32:39,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:32:39,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:32:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 07:32:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 07:32:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 07:32:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 07:32:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:32:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:32:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 07:32:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:32:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 07:32:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 07:32:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:32:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:32:39,284 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:32:39,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:32:39,871 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-04-18 07:32:39,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:39 BoogieIcfgContainer [2020-04-18 07:32:39,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:32:39,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:32:39,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:32:39,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:32:39,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:32:38" (1/3) ... [2020-04-18 07:32:39,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5a87cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:39, skipping insertion in model container [2020-04-18 07:32:39,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:39" (2/3) ... [2020-04-18 07:32:39,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5a87cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:39, skipping insertion in model container [2020-04-18 07:32:39,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:39" (3/3) ... [2020-04-18 07:32:39,884 INFO L109 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-04-18 07:32:39,895 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:32:39,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:32:39,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 07:32:39,904 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:32:39,963 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,965 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,966 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,966 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,966 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,966 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,967 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,967 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,967 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,967 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,968 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,968 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,971 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,971 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,971 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,972 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,972 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,972 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,972 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,973 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,973 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,976 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,977 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,977 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,977 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,977 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,978 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,978 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,978 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,978 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,979 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,979 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,979 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,981 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,982 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,982 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,982 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,982 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,983 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,983 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,983 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,983 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,984 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,984 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,988 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,989 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,989 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,989 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,989 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,990 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,990 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,994 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,995 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,995 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,995 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,995 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,996 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,996 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,996 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,997 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,997 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,997 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,997 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,998 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,998 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,998 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,998 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:39,999 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,003 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,003 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,003 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,004 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,004 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,007 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,008 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,008 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,008 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,008 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,009 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,009 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,009 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,009 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,010 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,012 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,012 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,013 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,013 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,013 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,013 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,014 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,014 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,017 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,018 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,018 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,018 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,018 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,019 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,035 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,035 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,036 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,036 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,036 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,036 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,037 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,037 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,037 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,037 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,037 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,038 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,038 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,038 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,038 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,039 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,039 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,039 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,039 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,039 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,040 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,040 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,040 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,040 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,040 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,041 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,045 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,046 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,046 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,046 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,046 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,046 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,047 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,047 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,047 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,047 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,047 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,047 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,048 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,048 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,048 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,049 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,049 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,050 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,050 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,050 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,051 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,051 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,051 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,077 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,078 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,078 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,078 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,078 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,079 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,079 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,079 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,080 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,080 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,080 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,080 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,081 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,081 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,081 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,081 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,082 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,082 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:40,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:32:40,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:32:40,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:32:40,174 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:32:40,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:32:40,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:32:40,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:32:40,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:32:40,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:32:40,193 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 306 flow [2020-04-18 07:32:40,195 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-04-18 07:32:40,259 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-04-18 07:32:40,260 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:32:40,267 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. [2020-04-18 07:32:40,274 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-04-18 07:32:40,314 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-04-18 07:32:40,315 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:32:40,317 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. [2020-04-18 07:32:40,322 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5744 [2020-04-18 07:32:40,323 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:32:43,178 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-04-18 07:32:43,870 WARN L192 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-04-18 07:32:44,102 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-04-18 07:32:44,195 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7597 [2020-04-18 07:32:44,195 INFO L214 etLargeBlockEncoding]: Total number of compositions: 124 [2020-04-18 07:32:44,199 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-04-18 07:32:44,224 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-04-18 07:32:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-04-18 07:32:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:32:44,233 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:44,234 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 07:32:44,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 1 times [2020-04-18 07:32:44,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:44,249 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [712262426] [2020-04-18 07:32:44,270 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:44,285 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:32:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 07:32:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:32:44,287 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 2 times [2020-04-18 07:32:44,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:44,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134812326] [2020-04-18 07:32:44,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:44,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134812326] [2020-04-18 07:32:44,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:44,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:44,579 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:44,580 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:44,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:32:44,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:44,589 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:44,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:44,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:44,595 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 07:32:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:44,598 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 07:32:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 07:32:44,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:44,599 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [712262426] [2020-04-18 07:32:44,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:44,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:32:44,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [712262426] [2020-04-18 07:32:44,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:32:44,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:44,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:44,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:44,605 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-04-18 07:32:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:44,690 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-04-18 07:32:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:32:44,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 07:32:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:44,727 INFO L225 Difference]: With dead ends: 504 [2020-04-18 07:32:44,727 INFO L226 Difference]: Without dead ends: 460 [2020-04-18 07:32:44,729 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-04-18 07:32:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-04-18 07:32:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-04-18 07:32:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-04-18 07:32:44,855 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-04-18 07:32:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:44,855 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-04-18 07:32:44,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:32:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-04-18 07:32:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:32:44,857 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:44,857 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:44,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:44,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:44,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 1 times [2020-04-18 07:32:44,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:44,858 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [580647343] [2020-04-18 07:32:44,859 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:44,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:32:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:32:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:32:44,860 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 2 times [2020-04-18 07:32:44,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:44,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923928892] [2020-04-18 07:32:44,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:44,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923928892] [2020-04-18 07:32:44,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:44,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:44,959 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:44,960 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:44,962 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:32:44,962 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:44,965 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:44,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:44,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:44,966 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 07:32:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:44,968 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:32:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:32:44,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:44,969 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [580647343] [2020-04-18 07:32:44,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:44,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:32:44,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [580647343] [2020-04-18 07:32:44,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:32:44,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:44,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:44,971 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-04-18 07:32:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:44,986 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-04-18 07:32:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:32:44,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 07:32:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:44,990 INFO L225 Difference]: With dead ends: 464 [2020-04-18 07:32:44,991 INFO L226 Difference]: Without dead ends: 464 [2020-04-18 07:32:44,992 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-18 07:32:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-04-18 07:32:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-04-18 07:32:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-04-18 07:32:45,017 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-04-18 07:32:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:45,017 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-04-18 07:32:45,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:32:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-04-18 07:32:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:32:45,019 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:45,020 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:45,020 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 1 times [2020-04-18 07:32:45,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:45,021 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1647839619] [2020-04-18 07:32:45,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:45,022 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:32:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 07:32:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 07:32:45,022 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 2 times [2020-04-18 07:32:45,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:45,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556281297] [2020-04-18 07:32:45,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:45,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556281297] [2020-04-18 07:32:45,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024596816] [2020-04-18 07:32:45,111 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:45,189 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:32:45,190 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:32:45,192 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 07:32:45,197 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:32:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:45,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:32:45,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 07:32:45,235 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:45,238 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:45,241 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 07:32:45,241 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:45,270 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:45,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:32:45,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:32:45,271 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 7 states. [2020-04-18 07:32:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:45,294 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-04-18 07:32:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-04-18 07:32:45,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:45,295 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1647839619] [2020-04-18 07:32:45,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:45,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:32:45,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1647839619] [2020-04-18 07:32:45,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 07:32:45,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:45,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:32:45,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:32:45,297 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-04-18 07:32:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:45,439 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-04-18 07:32:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 07:32:45,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 07:32:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:45,447 INFO L225 Difference]: With dead ends: 866 [2020-04-18 07:32:45,447 INFO L226 Difference]: Without dead ends: 851 [2020-04-18 07:32:45,448 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:32:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-04-18 07:32:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-04-18 07:32:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-04-18 07:32:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-04-18 07:32:45,475 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-04-18 07:32:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:45,476 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-04-18 07:32:45,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 07:32:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-04-18 07:32:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:32:45,479 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:45,479 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:45,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:45,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 1 times [2020-04-18 07:32:45,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:45,685 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1729079008] [2020-04-18 07:32:45,687 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:45,688 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 114 transitions. [2020-04-18 07:32:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 07:32:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:32:45,691 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1906041356, now seen corresponding path program 2 times [2020-04-18 07:32:45,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:45,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721256360] [2020-04-18 07:32:45,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:45,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721256360] [2020-04-18 07:32:45,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:45,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:45,840 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:45,844 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:45,850 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 62 transitions. [2020-04-18 07:32:45,851 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:45,855 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:45,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:45,856 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-04-18 07:32:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:45,862 INFO L93 Difference]: Finished difference Result 69 states and 116 transitions. [2020-04-18 07:32:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 116 transitions. [2020-04-18 07:32:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:32:45,863 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 3 times [2020-04-18 07:32:45,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:45,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369301712] [2020-04-18 07:32:45,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:45,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369301712] [2020-04-18 07:32:45,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:45,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:45,946 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:45,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:45,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-04-18 07:32:45,952 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:45,957 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:45,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:45,958 INFO L87 Difference]: Start difference. First operand 69 states and 116 transitions. Second operand 3 states. [2020-04-18 07:32:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:45,966 INFO L93 Difference]: Finished difference Result 69 states and 116 transitions. [2020-04-18 07:32:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 116 transitions. [2020-04-18 07:32:45,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:45,967 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1729079008] [2020-04-18 07:32:45,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:45,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:32:45,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1729079008] [2020-04-18 07:32:45,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:32:45,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:32:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:45,969 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 4 states. [2020-04-18 07:32:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,028 INFO L93 Difference]: Finished difference Result 355 states and 766 transitions. [2020-04-18 07:32:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:32:46,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-04-18 07:32:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:46,031 INFO L225 Difference]: With dead ends: 355 [2020-04-18 07:32:46,031 INFO L226 Difference]: Without dead ends: 355 [2020-04-18 07:32:46,032 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:32:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-04-18 07:32:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-04-18 07:32:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-04-18 07:32:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-04-18 07:32:46,042 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-04-18 07:32:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:46,043 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-04-18 07:32:46,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:32:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-04-18 07:32:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:46,045 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:46,045 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:46,045 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:46,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 1 times [2020-04-18 07:32:46,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:46,046 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [225151055] [2020-04-18 07:32:46,047 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:46,048 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 129 transitions. [2020-04-18 07:32:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 07:32:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:46,050 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1042259552, now seen corresponding path program 2 times [2020-04-18 07:32:46,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:46,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670532523] [2020-04-18 07:32:46,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:46,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670532523] [2020-04-18 07:32:46,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:46,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:46,090 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:46,092 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:46,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 65 transitions. [2020-04-18 07:32:46,100 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:46,103 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:46,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:46,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:46,104 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 07:32:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,109 INFO L93 Difference]: Finished difference Result 80 states and 136 transitions. [2020-04-18 07:32:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 136 transitions. [2020-04-18 07:32:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:46,110 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash -758897310, now seen corresponding path program 3 times [2020-04-18 07:32:46,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:46,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728092818] [2020-04-18 07:32:46,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:46,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728092818] [2020-04-18 07:32:46,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:46,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:46,151 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:46,153 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:46,159 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 31 transitions. [2020-04-18 07:32:46,159 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:46,171 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:46,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:46,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:46,171 INFO L87 Difference]: Start difference. First operand 80 states and 136 transitions. Second operand 3 states. [2020-04-18 07:32:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,186 INFO L93 Difference]: Finished difference Result 84 states and 139 transitions. [2020-04-18 07:32:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 139 transitions. [2020-04-18 07:32:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:46,187 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:32:46,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 4 times [2020-04-18 07:32:46,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:46,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288554921] [2020-04-18 07:32:46,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:46,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288554921] [2020-04-18 07:32:46,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:46,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:46,256 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:46,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:46,265 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 07:32:46,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:46,274 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:46,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:46,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:32:46,275 INFO L87 Difference]: Start difference. First operand 84 states and 139 transitions. Second operand 3 states. [2020-04-18 07:32:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,288 INFO L93 Difference]: Finished difference Result 88 states and 143 transitions. [2020-04-18 07:32:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 143 transitions. [2020-04-18 07:32:46,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:46,289 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [225151055] [2020-04-18 07:32:46,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:46,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:32:46,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [225151055] [2020-04-18 07:32:46,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 07:32:46,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:46,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:32:46,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:32:46,290 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 5 states. [2020-04-18 07:32:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,374 INFO L93 Difference]: Finished difference Result 418 states and 903 transitions. [2020-04-18 07:32:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 07:32:46,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 07:32:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:46,377 INFO L225 Difference]: With dead ends: 418 [2020-04-18 07:32:46,377 INFO L226 Difference]: Without dead ends: 418 [2020-04-18 07:32:46,378 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:32:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-18 07:32:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 295. [2020-04-18 07:32:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-04-18 07:32:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-04-18 07:32:46,388 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-04-18 07:32:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:46,388 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-04-18 07:32:46,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 07:32:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-04-18 07:32:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 07:32:46,390 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:46,390 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-18 07:32:46,390 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:46,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 3 times [2020-04-18 07:32:46,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:46,391 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1331243995] [2020-04-18 07:32:46,392 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:46,392 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-04-18 07:32:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-04-18 07:32:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 07:32:46,393 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 4 times [2020-04-18 07:32:46,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:46,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938270567] [2020-04-18 07:32:46,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:46,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938270567] [2020-04-18 07:32:46,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995660278] [2020-04-18 07:32:46,507 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:46,585 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 07:32:46,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:32:46,587 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 07:32:46,588 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:32:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:46,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:32:46,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-04-18 07:32:46,611 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:46,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:46,618 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-04-18 07:32:46,618 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:46,668 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:46,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:32:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:32:46,669 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 10 states. [2020-04-18 07:32:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,755 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-04-18 07:32:46,755 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-04-18 07:32:46,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:46,755 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1331243995] [2020-04-18 07:32:46,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:46,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 07:32:46,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1331243995] [2020-04-18 07:32:46,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 07:32:46,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:46,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 07:32:46,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:32:46,757 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 10 states. [2020-04-18 07:32:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:46,889 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-04-18 07:32:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 07:32:46,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-04-18 07:32:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:46,894 INFO L225 Difference]: With dead ends: 542 [2020-04-18 07:32:46,894 INFO L226 Difference]: Without dead ends: 542 [2020-04-18 07:32:46,895 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-04-18 07:32:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-04-18 07:32:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-04-18 07:32:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-04-18 07:32:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-04-18 07:32:46,910 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-04-18 07:32:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:46,910 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-04-18 07:32:46,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 07:32:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-04-18 07:32:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:46,912 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:46,912 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:47,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:47,118 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 1 times [2020-04-18 07:32:47,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:47,120 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [768508767] [2020-04-18 07:32:47,121 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,123 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 197 transitions. [2020-04-18 07:32:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-04-18 07:32:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:47,124 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,125 INFO L82 PathProgramCache]: Analyzing trace with hash 166328533, now seen corresponding path program 2 times [2020-04-18 07:32:47,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:47,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199846999] [2020-04-18 07:32:47,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:47,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199846999] [2020-04-18 07:32:47,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:47,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:47,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:47,157 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,164 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 77 transitions. [2020-04-18 07:32:47,165 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:47,195 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:47,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:47,195 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2020-04-18 07:32:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:47,207 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2020-04-18 07:32:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 216 transitions. [2020-04-18 07:32:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:47,208 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1369339725, now seen corresponding path program 3 times [2020-04-18 07:32:47,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:47,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393540404] [2020-04-18 07:32:47,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:47,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393540404] [2020-04-18 07:32:47,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:47,241 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:47,244 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,248 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 43 transitions. [2020-04-18 07:32:47,249 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:47,254 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:47,255 INFO L87 Difference]: Start difference. First operand 124 states and 216 transitions. Second operand 3 states. [2020-04-18 07:32:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:47,264 INFO L93 Difference]: Finished difference Result 132 states and 223 transitions. [2020-04-18 07:32:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 223 transitions. [2020-04-18 07:32:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:47,265 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:32:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 4 times [2020-04-18 07:32:47,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:47,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673338995] [2020-04-18 07:32:47,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:47,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673338995] [2020-04-18 07:32:47,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:47,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 07:32:47,655 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:47,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,663 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 61 transitions. [2020-04-18 07:32:47,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:47,891 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 07:32:47,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 07:32:47,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-04-18 07:32:47,893 INFO L87 Difference]: Start difference. First operand 132 states and 223 transitions. Second operand 14 states. [2020-04-18 07:32:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,599 INFO L93 Difference]: Finished difference Result 132 states and 223 transitions. [2020-04-18 07:32:48,600 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 223 transitions. [2020-04-18 07:32:48,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:48,601 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [768508767] [2020-04-18 07:32:48,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:48,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-04-18 07:32:48,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [768508767] [2020-04-18 07:32:48,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 07:32:48,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:48,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 07:32:48,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-04-18 07:32:48,603 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 16 states. [2020-04-18 07:32:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:50,252 INFO L93 Difference]: Finished difference Result 703 states and 1483 transitions. [2020-04-18 07:32:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-18 07:32:50,253 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 07:32:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:50,258 INFO L225 Difference]: With dead ends: 703 [2020-04-18 07:32:50,258 INFO L226 Difference]: Without dead ends: 631 [2020-04-18 07:32:50,259 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=289, Invalid=1271, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 07:32:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-04-18 07:32:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 422. [2020-04-18 07:32:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-04-18 07:32:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 927 transitions. [2020-04-18 07:32:50,275 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 927 transitions. Word has length 21 [2020-04-18 07:32:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:50,275 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 927 transitions. [2020-04-18 07:32:50,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 07:32:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 927 transitions. [2020-04-18 07:32:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 07:32:50,277 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:50,277 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-04-18 07:32:50,277 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 5 times [2020-04-18 07:32:50,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:50,278 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [638186237] [2020-04-18 07:32:50,279 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:50,280 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 07:32:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 07:32:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 07:32:50,281 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:50,282 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 6 times [2020-04-18 07:32:50,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:50,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841260766] [2020-04-18 07:32:50,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:50,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841260766] [2020-04-18 07:32:50,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845926738] [2020-04-18 07:32:50,410 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:50,522 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 07:32:50,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:32:50,524 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 07:32:50,526 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:32:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:50,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:32:50,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2020-04-18 07:32:50,600 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:50,607 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:50,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 07:32:50,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:50,672 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 07:32:50,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:32:50,673 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 13 states. [2020-04-18 07:32:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:50,842 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-04-18 07:32:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-04-18 07:32:50,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:50,842 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [638186237] [2020-04-18 07:32:50,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:50,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-04-18 07:32:50,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [638186237] [2020-04-18 07:32:50,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 07:32:50,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:50,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 07:32:50,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-04-18 07:32:50,844 INFO L87 Difference]: Start difference. First operand 422 states and 927 transitions. Second operand 13 states. [2020-04-18 07:32:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:50,980 INFO L93 Difference]: Finished difference Result 759 states and 1604 transitions. [2020-04-18 07:32:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 07:32:50,980 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-04-18 07:32:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:50,985 INFO L225 Difference]: With dead ends: 759 [2020-04-18 07:32:50,985 INFO L226 Difference]: Without dead ends: 759 [2020-04-18 07:32:50,988 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:32:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-04-18 07:32:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 499. [2020-04-18 07:32:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-04-18 07:32:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1096 transitions. [2020-04-18 07:32:51,005 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1096 transitions. Word has length 27 [2020-04-18 07:32:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:51,005 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 1096 transitions. [2020-04-18 07:32:51,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 07:32:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1096 transitions. [2020-04-18 07:32:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:32:51,008 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:51,008 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:51,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:51,219 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:51,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:51,220 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 5 times [2020-04-18 07:32:51,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:51,220 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [485200395] [2020-04-18 07:32:51,221 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:51,223 INFO L259 McrAutomatonBuilder]: Finished intersection with 194 states and 358 transitions. [2020-04-18 07:32:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-04-18 07:32:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:32:51,227 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash 838503548, now seen corresponding path program 6 times [2020-04-18 07:32:51,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:51,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845696125] [2020-04-18 07:32:51,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-18 07:32:51,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845696125] [2020-04-18 07:32:51,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:51,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:51,259 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:51,264 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:51,276 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 98 transitions. [2020-04-18 07:32:51,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:51,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:51,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:51,280 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 3 states. [2020-04-18 07:32:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:51,290 INFO L93 Difference]: Finished difference Result 257 states and 468 transitions. [2020-04-18 07:32:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 468 transitions. [2020-04-18 07:32:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:32:51,291 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:51,291 INFO L82 PathProgramCache]: Analyzing trace with hash 493442820, now seen corresponding path program 7 times [2020-04-18 07:32:51,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:51,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391850888] [2020-04-18 07:32:51,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 07:32:51,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391850888] [2020-04-18 07:32:51,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:51,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:51,325 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:51,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:51,341 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 84 transitions. [2020-04-18 07:32:51,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:51,346 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:51,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:51,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:51,347 INFO L87 Difference]: Start difference. First operand 257 states and 468 transitions. Second operand 3 states. [2020-04-18 07:32:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:51,356 INFO L93 Difference]: Finished difference Result 273 states and 490 transitions. [2020-04-18 07:32:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 490 transitions. [2020-04-18 07:32:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 07:32:51,357 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:32:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 8 times [2020-04-18 07:32:51,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:51,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414523708] [2020-04-18 07:32:51,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:51,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414523708] [2020-04-18 07:32:51,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446068824] [2020-04-18 07:32:51,899 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:51,971 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-04-18 07:32:51,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:32:51,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-04-18 07:32:51,977 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:32:52,175 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-04-18 07:32:52,175 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:32:52,184 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 07:32:52,185 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:32:52,185 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-04-18 07:32:52,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:32:52,659 INFO L377 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 43 treesize of output 19 [2020-04-18 07:32:52,663 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 07:32:52,668 INFO L377 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 40 treesize of output 16 [2020-04-18 07:32:52,669 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 07:32:52,685 INFO L619 ElimStorePlain]: treesize reduction 24, result has 31.4 percent of original size [2020-04-18 07:32:52,686 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 07:32:52,686 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:94, output treesize:11 [2020-04-18 07:32:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:32:52,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:52,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 27 [2020-04-18 07:32:52,747 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:52,752 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:52,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 96 transitions. [2020-04-18 07:32:52,766 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:53,724 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 07:32:53,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 07:32:53,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2020-04-18 07:32:53,725 INFO L87 Difference]: Start difference. First operand 273 states and 490 transitions. Second operand 28 states. [2020-04-18 07:32:59,074 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-04-18 07:32:59,285 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 07:32:59,482 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-04-18 07:33:00,316 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-04-18 07:33:00,796 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-04-18 07:33:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:07,442 INFO L93 Difference]: Finished difference Result 331 states and 579 transitions. [2020-04-18 07:33:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 579 transitions. [2020-04-18 07:33:07,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:07,444 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [485200395] [2020-04-18 07:33:07,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:07,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-04-18 07:33:07,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [485200395] [2020-04-18 07:33:07,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-04-18 07:33:07,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:07,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-04-18 07:33:07,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=892, Invalid=6080, Unknown=0, NotChecked=0, Total=6972 [2020-04-18 07:33:07,448 INFO L87 Difference]: Start difference. First operand 499 states and 1096 transitions. Second operand 30 states. [2020-04-18 07:33:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:18,418 INFO L93 Difference]: Finished difference Result 1481 states and 3141 transitions. [2020-04-18 07:33:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-04-18 07:33:18,419 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 28 [2020-04-18 07:33:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:18,428 INFO L225 Difference]: With dead ends: 1481 [2020-04-18 07:33:18,428 INFO L226 Difference]: Without dead ends: 1481 [2020-04-18 07:33:18,434 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6783 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1874, Invalid=17031, Unknown=1, NotChecked=0, Total=18906 [2020-04-18 07:33:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-04-18 07:33:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 597. [2020-04-18 07:33:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-04-18 07:33:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1331 transitions. [2020-04-18 07:33:18,484 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1331 transitions. Word has length 28 [2020-04-18 07:33:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:18,485 INFO L479 AbstractCegarLoop]: Abstraction has 597 states and 1331 transitions. [2020-04-18 07:33:18,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-04-18 07:33:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1331 transitions. [2020-04-18 07:33:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:33:18,486 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:18,487 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:18,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:18,693 INFO L427 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:18,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:18,693 INFO L82 PathProgramCache]: Analyzing trace with hash 585117152, now seen corresponding path program 1 times [2020-04-18 07:33:18,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:18,694 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1315279190] [2020-04-18 07:33:18,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:18,697 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 427 transitions. [2020-04-18 07:33:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states. [2020-04-18 07:33:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:33:18,700 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash 681183582, now seen corresponding path program 2 times [2020-04-18 07:33:18,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:18,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987524709] [2020-04-18 07:33:18,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-04-18 07:33:18,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987524709] [2020-04-18 07:33:18,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:18,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:33:18,737 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:18,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:18,753 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 53 transitions. [2020-04-18 07:33:18,753 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:18,757 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:18,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:18,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:18,757 INFO L87 Difference]: Start difference. First operand 230 states. Second operand 3 states. [2020-04-18 07:33:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:18,769 INFO L93 Difference]: Finished difference Result 314 states and 576 transitions. [2020-04-18 07:33:18,769 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 576 transitions. [2020-04-18 07:33:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:33:18,770 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:33:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:18,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1873938980, now seen corresponding path program 3 times [2020-04-18 07:33:18,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:18,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279140034] [2020-04-18 07:33:18,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-04-18 07:33:18,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279140034] [2020-04-18 07:33:18,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:18,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:33:18,805 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:18,812 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:18,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 39 transitions. [2020-04-18 07:33:18,822 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:18,828 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:18,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:33:18,828 INFO L87 Difference]: Start difference. First operand 314 states and 576 transitions. Second operand 3 states. [2020-04-18 07:33:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:18,842 INFO L93 Difference]: Finished difference Result 356 states and 630 transitions. [2020-04-18 07:33:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 630 transitions. [2020-04-18 07:33:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:33:18,843 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:33:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1546116258, now seen corresponding path program 4 times [2020-04-18 07:33:18,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:18,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555093637] [2020-04-18 07:33:18,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:33:18,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555093637] [2020-04-18 07:33:18,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208897778] [2020-04-18 07:33:18,963 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:19,058 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 07:33:19,059 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:19,060 INFO L264 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 07:33:19,064 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-04-18 07:33:19,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:33:19,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2020-04-18 07:33:19,072 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:19,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:19,093 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 71 transitions. [2020-04-18 07:33:19,093 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:19,145 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 07:33:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:33:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 07:33:19,145 INFO L87 Difference]: Start difference. First operand 356 states and 630 transitions. Second operand 9 states. [2020-04-18 07:33:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:19,332 INFO L93 Difference]: Finished difference Result 417 states and 725 transitions. [2020-04-18 07:33:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 725 transitions. [2020-04-18 07:33:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 07:33:19,333 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 07:33:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash 585117152, now seen corresponding path program 5 times [2020-04-18 07:33:19,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:19,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254229993] [2020-04-18 07:33:19,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:33:19,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254229993] [2020-04-18 07:33:19,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586772377] [2020-04-18 07:33:19,408 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:19,503 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 07:33:19,503 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:19,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 07:33:19,505 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:33:19,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:33:19,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-04-18 07:33:19,524 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:19,530 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:19,546 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 99 transitions. [2020-04-18 07:33:19,546 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:19,589 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 07:33:19,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 07:33:19,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-04-18 07:33:19,590 INFO L87 Difference]: Start difference. First operand 417 states and 725 transitions. Second operand 11 states. [2020-04-18 07:33:19,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:19,879 INFO L93 Difference]: Finished difference Result 429 states and 746 transitions. [2020-04-18 07:33:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 746 transitions. [2020-04-18 07:33:19,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:19,880 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1315279190] [2020-04-18 07:33:19,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:19,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 07:33:19,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1315279190] [2020-04-18 07:33:19,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 07:33:19,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:19,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 07:33:19,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:33:19,882 INFO L87 Difference]: Start difference. First operand 597 states and 1331 transitions. Second operand 14 states. [2020-04-18 07:33:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:20,194 INFO L93 Difference]: Finished difference Result 1008 states and 2152 transitions. [2020-04-18 07:33:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 07:33:20,195 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-04-18 07:33:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:20,199 INFO L225 Difference]: With dead ends: 1008 [2020-04-18 07:33:20,199 INFO L226 Difference]: Without dead ends: 958 [2020-04-18 07:33:20,200 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:33:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-04-18 07:33:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 760. [2020-04-18 07:33:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-04-18 07:33:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1680 transitions. [2020-04-18 07:33:20,218 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1680 transitions. Word has length 31 [2020-04-18 07:33:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:20,218 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 1680 transitions. [2020-04-18 07:33:20,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 07:33:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1680 transitions. [2020-04-18 07:33:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 07:33:20,220 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:20,220 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-04-18 07:33:20,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:20,630 INFO L427 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash 225739520, now seen corresponding path program 7 times [2020-04-18 07:33:20,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:20,631 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1017279097] [2020-04-18 07:33:20,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:20,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 07:33:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 07:33:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 07:33:20,633 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash 225739520, now seen corresponding path program 8 times [2020-04-18 07:33:20,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:20,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123867840] [2020-04-18 07:33:20,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:20,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123867840] [2020-04-18 07:33:20,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594131405] [2020-04-18 07:33:20,787 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:20,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:33:20,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:33:20,870 INFO L264 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 07:33:20,872 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:33:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:33:20,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:33:20,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2020-04-18 07:33:20,909 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:20,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:20,927 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 07:33:20,927 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:21,002 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:33:21,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 07:33:21,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-04-18 07:33:21,003 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 16 states. [2020-04-18 07:33:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:21,257 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-04-18 07:33:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-04-18 07:33:21,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:21,258 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1017279097] [2020-04-18 07:33:21,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:21,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-04-18 07:33:21,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1017279097] [2020-04-18 07:33:21,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 07:33:21,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:21,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 07:33:21,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 07:33:21,260 INFO L87 Difference]: Start difference. First operand 760 states and 1680 transitions. Second operand 16 states. [2020-04-18 07:33:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:21,451 INFO L93 Difference]: Finished difference Result 1126 states and 2399 transitions. [2020-04-18 07:33:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 07:33:21,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-04-18 07:33:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:21,458 INFO L225 Difference]: With dead ends: 1126 [2020-04-18 07:33:21,458 INFO L226 Difference]: Without dead ends: 1126 [2020-04-18 07:33:21,459 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:33:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2020-04-18 07:33:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 837. [2020-04-18 07:33:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-04-18 07:33:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1849 transitions. [2020-04-18 07:33:21,478 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1849 transitions. Word has length 34 [2020-04-18 07:33:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:21,479 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1849 transitions. [2020-04-18 07:33:21,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 07:33:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1849 transitions. [2020-04-18 07:33:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 07:33:21,480 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:33:21,480 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:33:21,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:33:21,684 INFO L427 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:33:21,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1848776679, now seen corresponding path program 1 times [2020-04-18 07:33:21,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:33:21,685 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1035356897] [2020-04-18 07:33:21,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:21,691 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 606 transitions. [2020-04-18 07:33:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-04-18 07:33:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 07:33:21,694 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:33:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:33:21,695 INFO L82 PathProgramCache]: Analyzing trace with hash 691598381, now seen corresponding path program 2 times [2020-04-18 07:33:21,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:33:21,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410481786] [2020-04-18 07:33:21,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:33:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:33:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-04-18 07:33:21,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410481786] [2020-04-18 07:33:21,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:33:21,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:33:21,717 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:33:21,724 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:33:21,745 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 122 transitions. [2020-04-18 07:33:21,745 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:33:21,753 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:33:21,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:21,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:21,754 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2020-04-18 07:33:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:21,755 INFO L93 Difference]: Finished difference Result 322 states and 606 transitions. [2020-04-18 07:33:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 606 transitions. [2020-04-18 07:33:21,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:21,756 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1035356897] [2020-04-18 07:33:21,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:33:21,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:33:21,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1035356897] [2020-04-18 07:33:21,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:33:21,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:33:21,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:33:21,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:21,758 INFO L87 Difference]: Start difference. First operand 837 states and 1849 transitions. Second operand 3 states. [2020-04-18 07:33:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:33:21,759 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2020-04-18 07:33:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:33:21,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-04-18 07:33:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:33:21,760 INFO L225 Difference]: With dead ends: 17 [2020-04-18 07:33:21,760 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 07:33:21,760 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:33:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 07:33:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 07:33:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 07:33:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 07:33:21,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-04-18 07:33:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:33:21,762 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 07:33:21,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:33:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 07:33:21,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:33:21,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:33:21 BasicIcfg [2020-04-18 07:33:21,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:33:21,767 INFO L168 Benchmark]: Toolchain (without parser) took 43694.84 ms. Allocated memory was 141.6 MB in the beginning and 499.1 MB in the end (delta: 357.6 MB). Free memory was 97.5 MB in the beginning and 252.2 MB in the end (delta: -154.7 MB). Peak memory consumption was 202.9 MB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,768 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 951.43 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 95.6 MB in the beginning and 130.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.06 ms. Allocated memory is still 199.8 MB. Free memory was 130.2 MB in the beginning and 127.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,769 INFO L168 Benchmark]: Boogie Preprocessor took 36.29 ms. Allocated memory is still 199.8 MB. Free memory was 127.2 MB in the beginning and 125.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,769 INFO L168 Benchmark]: RCFGBuilder took 691.16 ms. Allocated memory is still 199.8 MB. Free memory was 125.0 MB in the beginning and 92.7 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,770 INFO L168 Benchmark]: TraceAbstraction took 41889.07 ms. Allocated memory was 199.8 MB in the beginning and 499.1 MB in the end (delta: 299.4 MB). Free memory was 92.0 MB in the beginning and 252.2 MB in the end (delta: -160.2 MB). Peak memory consumption was 139.2 MB. Max. memory is 7.1 GB. [2020-04-18 07:33:21,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 951.43 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 95.6 MB in the beginning and 130.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 106.06 ms. Allocated memory is still 199.8 MB. Free memory was 130.2 MB in the beginning and 127.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.29 ms. Allocated memory is still 199.8 MB. Free memory was 127.2 MB in the beginning and 125.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.16 ms. Allocated memory is still 199.8 MB. Free memory was 125.0 MB in the beginning and 92.7 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41889.07 ms. Allocated memory was 199.8 MB in the beginning and 499.1 MB in the end (delta: 299.4 MB). Free memory was 92.0 MB in the beginning and 252.2 MB in the end (delta: -160.2 MB). Peak memory consumption was 139.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.0s, 137 ProgramPointsBefore, 40 ProgramPointsAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 3307 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 59 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 7597 CheckedPairsTotal, 124 TotalNumberOfCompositions - 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: 41.5s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 592 SDtfs, 2130 SDslu, 3489 SDs, 0 SdLazy, 3097 SolverSat, 405 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1022 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7534 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=837occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 2510 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...