/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:51:41,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:51:41,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:51:41,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:51:41,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:51:41,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:51:41,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:51:41,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:51:41,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:51:41,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:51:41,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:51:41,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:51:41,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:51:41,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:51:41,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:51:41,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:51:41,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:51:41,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:51:41,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:51:41,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:51:41,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:51:41,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:51:41,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:51:41,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:51:41,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:51:41,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:51:41,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:51:41,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:51:41,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:51:41,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:51:41,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:51:41,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:51:41,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:51:41,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:51:41,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:51:41,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:51:41,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:51:41,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:51:41,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:51:41,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:51:41,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:51:41,619 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-VariableLbe-McrStrategy.epf [2020-04-18 11:51:41,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:51:41,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:51:41,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:51:41,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:51:41,640 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:51:41,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:51:41,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:51:41,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:51:41,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:51:41,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:51:41,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:51:41,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:51:41,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:51:41,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:51:41,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:51:41,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:51:41,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:51:41,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:51:41,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:51:41,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:51:41,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:51:41,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:51:41,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:51:41,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:51:41,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:51:41,646 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:51:41,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:51:41,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 11:51:41,646 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:51:41,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:51:41,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:51:41,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:51:41,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:51:41,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:51:41,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:51:41,978 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:51:41,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2020-04-18 11:51:42,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebab6e2c/58a63d765ae8494cb34ef7a75bc80b05/FLAG6f1af6cc9 [2020-04-18 11:51:42,714 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:51:42,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2020-04-18 11:51:42,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebab6e2c/58a63d765ae8494cb34ef7a75bc80b05/FLAG6f1af6cc9 [2020-04-18 11:51:42,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebab6e2c/58a63d765ae8494cb34ef7a75bc80b05 [2020-04-18 11:51:42,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:51:42,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:51:42,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:51:42,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:51:42,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:51:42,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:51:42" (1/1) ... [2020-04-18 11:51:42,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:42, skipping insertion in model container [2020-04-18 11:51:42,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:51:42" (1/1) ... [2020-04-18 11:51:42,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:51:43,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:51:43,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:51:43,606 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:51:43,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:51:43,823 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:51:43,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43 WrapperNode [2020-04-18 11:51:43,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:51:43,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:51:43,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:51:43,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:51:43,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:51:43,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:51:43,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:51:43,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:51:43,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (1/1) ... [2020-04-18 11:51:43,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:51:43,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:51:43,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:51:43,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:51:43,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (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 11:51:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 11:51:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 11:51:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 11:51:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 11:51:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:51:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:51:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 11:51:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:51:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 11:51:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 11:51:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:51:44,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:51:44,013 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 11:51:44,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:51:44,563 INFO L295 CfgBuilder]: Removed 26 assume(true) statements. [2020-04-18 11:51:44,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:51:44 BoogieIcfgContainer [2020-04-18 11:51:44,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:51:44,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:51:44,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:51:44,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:51:44,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:51:42" (1/3) ... [2020-04-18 11:51:44,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd67fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:51:44, skipping insertion in model container [2020-04-18 11:51:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:51:43" (2/3) ... [2020-04-18 11:51:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd67fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:51:44, skipping insertion in model container [2020-04-18 11:51:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:51:44" (3/3) ... [2020-04-18 11:51:44,577 INFO L109 eAbstractionObserver]: Analyzing ICFG stack-2.i [2020-04-18 11:51:44,587 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:51:44,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:51:44,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 11:51:44,599 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:51:44,658 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,658 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,658 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,658 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,659 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,659 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,659 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,660 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,660 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,660 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,660 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,661 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,661 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,661 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,661 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,662 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,662 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,662 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,664 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,664 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,664 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,664 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,678 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,679 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,679 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,680 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,680 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,680 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,681 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,681 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,681 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,681 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,681 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,682 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,682 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,682 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,683 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,683 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,684 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,685 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,685 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,685 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,685 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,686 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,686 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,686 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,686 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,687 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,687 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,687 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,687 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,688 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,688 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,688 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,688 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,688 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,689 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,689 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,689 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,689 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,689 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,690 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,690 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,690 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,691 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,691 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,691 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,692 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,696 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,697 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,697 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,697 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,697 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,698 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,698 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,699 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,699 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,699 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,699 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,700 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,700 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,701 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,701 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,701 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,702 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,702 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,702 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,703 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,703 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,703 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,704 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,704 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,704 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,704 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,704 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,705 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,705 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,705 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,705 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,705 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,706 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,706 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,709 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,710 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,710 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,710 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,717 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,718 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,718 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,718 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,720 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,721 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,721 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,721 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,721 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,721 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,722 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,722 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,722 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,722 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,726 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,726 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,726 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,726 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,726 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,727 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,728 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,728 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,729 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,734 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,734 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,735 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,735 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,735 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,735 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,735 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,736 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,736 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,736 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,736 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,736 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,736 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,737 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,737 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,737 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,737 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,737 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,738 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,738 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,738 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,738 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,739 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,748 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,749 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,749 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,749 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,749 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,749 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,750 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,750 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,750 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,750 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,750 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,750 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,751 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,751 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,751 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,751 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,751 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,752 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,752 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:51:44,779 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 11:51:44,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:51:44,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:51:44,797 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:51:44,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:51:44,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:51:44,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:51:44,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:51:44,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:51:44,815 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 149 transitions, 320 flow [2020-04-18 11:51:44,817 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 144 places, 149 transitions, 320 flow [2020-04-18 11:51:44,886 INFO L129 PetriNetUnfolder]: 11/149 cut-off events. [2020-04-18 11:51:44,887 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:51:44,896 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 149 events. 11/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-04-18 11:51:44,904 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 144 places, 149 transitions, 320 flow [2020-04-18 11:51:44,940 INFO L129 PetriNetUnfolder]: 11/149 cut-off events. [2020-04-18 11:51:44,941 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:51:44,943 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 149 events. 11/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-04-18 11:51:44,949 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6532 [2020-04-18 11:51:44,950 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 11:51:47,829 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-04-18 11:51:47,971 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-04-18 11:51:48,532 WARN L192 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-04-18 11:51:48,745 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-04-18 11:51:48,756 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9212 [2020-04-18 11:51:48,756 INFO L214 etLargeBlockEncoding]: Total number of compositions: 126 [2020-04-18 11:51:48,760 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 42 transitions, 106 flow [2020-04-18 11:51:48,788 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 385 states. [2020-04-18 11:51:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states. [2020-04-18 11:51:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:51:48,797 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:48,798 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:51:48,799 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 11:51:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:48,805 INFO L82 PathProgramCache]: Analyzing trace with hash 827700574, now seen corresponding path program 1 times [2020-04-18 11:51:48,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:48,812 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1838089376] [2020-04-18 11:51:48,828 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:48,840 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:51:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:51:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:51:48,842 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:48,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash 827700574, now seen corresponding path program 2 times [2020-04-18 11:51:48,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:48,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109994925] [2020-04-18 11:51:48,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:49,116 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 11:51:49,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109994925] [2020-04-18 11:51:49,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:49,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:51:49,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:49,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:49,121 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:51:49,122 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:49,128 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:51:49,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:51:49,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:51:49,134 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 11:51:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:49,137 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:51:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:51:49,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:49,138 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1838089376] [2020-04-18 11:51:49,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:49,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:51:49,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1838089376] [2020-04-18 11:51:49,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:51:49,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:49,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:51:49,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:51:49,144 INFO L87 Difference]: Start difference. First operand 385 states. Second operand 3 states. [2020-04-18 11:51:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:49,242 INFO L93 Difference]: Finished difference Result 702 states and 1789 transitions. [2020-04-18 11:51:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:51:49,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 11:51:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:49,282 INFO L225 Difference]: With dead ends: 702 [2020-04-18 11:51:49,282 INFO L226 Difference]: Without dead ends: 680 [2020-04-18 11:51:49,283 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 11:51:49,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-04-18 11:51:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 497. [2020-04-18 11:51:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-04-18 11:51:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1332 transitions. [2020-04-18 11:51:49,388 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1332 transitions. Word has length 6 [2020-04-18 11:51:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:49,388 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 1332 transitions. [2020-04-18 11:51:49,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:51:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1332 transitions. [2020-04-18 11:51:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:51:49,390 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:49,390 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:51:49,390 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 11:51:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash -694884820, now seen corresponding path program 1 times [2020-04-18 11:51:49,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:49,391 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1350412298] [2020-04-18 11:51:49,392 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:49,393 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:51:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:51:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:51:49,393 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:49,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:49,394 INFO L82 PathProgramCache]: Analyzing trace with hash -694884820, now seen corresponding path program 2 times [2020-04-18 11:51:49,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:49,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012223258] [2020-04-18 11:51:49,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:49,489 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 11:51:49,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012223258] [2020-04-18 11:51:49,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:49,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:51:49,490 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:49,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:49,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:51:49,492 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:49,495 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:51:49,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:51:49,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:51:49,496 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:51:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:49,497 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:51:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:51:49,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:49,497 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1350412298] [2020-04-18 11:51:49,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:49,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:51:49,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1350412298] [2020-04-18 11:51:49,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:51:49,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:49,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:51:49,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:51:49,500 INFO L87 Difference]: Start difference. First operand 497 states and 1332 transitions. Second operand 3 states. [2020-04-18 11:51:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:49,531 INFO L93 Difference]: Finished difference Result 615 states and 1590 transitions. [2020-04-18 11:51:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:51:49,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:51:49,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:49,536 INFO L225 Difference]: With dead ends: 615 [2020-04-18 11:51:49,536 INFO L226 Difference]: Without dead ends: 588 [2020-04-18 11:51:49,537 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 11:51:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-04-18 11:51:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 548. [2020-04-18 11:51:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-04-18 11:51:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1459 transitions. [2020-04-18 11:51:49,583 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1459 transitions. Word has length 9 [2020-04-18 11:51:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:49,584 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 1459 transitions. [2020-04-18 11:51:49,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:51:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1459 transitions. [2020-04-18 11:51:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:51:49,588 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:49,588 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:51:49,589 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 11:51:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:49,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2025683329, now seen corresponding path program 1 times [2020-04-18 11:51:49,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:49,590 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1964632447] [2020-04-18 11:51:49,591 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:49,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:51:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:51:49,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:51:49,592 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:49,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:49,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2025683329, now seen corresponding path program 2 times [2020-04-18 11:51:49,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:49,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681885802] [2020-04-18 11:51:49,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:49,704 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 11:51:49,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681885802] [2020-04-18 11:51:49,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:49,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:51:49,705 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:49,706 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:49,707 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:51:49,707 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:49,710 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:51:49,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:51:49,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:51:49,711 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 11:51:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:49,718 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:51:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:51:49,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:49,718 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1964632447] [2020-04-18 11:51:49,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:49,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:51:49,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1964632447] [2020-04-18 11:51:49,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:51:49,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:51:49,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:51:49,720 INFO L87 Difference]: Start difference. First operand 548 states and 1459 transitions. Second operand 3 states. [2020-04-18 11:51:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:49,737 INFO L93 Difference]: Finished difference Result 590 states and 1567 transitions. [2020-04-18 11:51:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:51:49,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:51:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:49,742 INFO L225 Difference]: With dead ends: 590 [2020-04-18 11:51:49,742 INFO L226 Difference]: Without dead ends: 590 [2020-04-18 11:51:49,742 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 11:51:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-04-18 11:51:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-04-18 11:51:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-04-18 11:51:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1567 transitions. [2020-04-18 11:51:49,764 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1567 transitions. Word has length 10 [2020-04-18 11:51:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:49,764 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 1567 transitions. [2020-04-18 11:51:49,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:51:49,765 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1567 transitions. [2020-04-18 11:51:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:51:49,766 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:49,767 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:51:49,767 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 11:51:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:49,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2079431227, now seen corresponding path program 1 times [2020-04-18 11:51:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:49,768 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [957000774] [2020-04-18 11:51:49,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:49,769 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-04-18 11:51:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 11:51:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:51:49,770 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:49,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2079431227, now seen corresponding path program 2 times [2020-04-18 11:51:49,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:49,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434735332] [2020-04-18 11:51:49,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:49,858 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 11:51:49,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434735332] [2020-04-18 11:51:49,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617756145] [2020-04-18 11:51:49,859 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 11:51:49,977 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:51:49,977 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:51:49,979 INFO L264 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:51:49,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:51:50,030 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 11:51:50,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:51:50,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:51:50,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:50,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:50,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-04-18 11:51:50,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:50,070 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:51:50,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:51:50,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:51:50,071 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 7 states. [2020-04-18 11:51:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:50,125 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-04-18 11:51:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-04-18 11:51:50,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:50,126 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [957000774] [2020-04-18 11:51:50,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:50,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:51:50,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [957000774] [2020-04-18 11:51:50,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:51:50,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:50,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:51:50,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:51:50,129 INFO L87 Difference]: Start difference. First operand 590 states and 1567 transitions. Second operand 7 states. [2020-04-18 11:51:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:50,256 INFO L93 Difference]: Finished difference Result 1106 states and 2834 transitions. [2020-04-18 11:51:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:51:50,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 11:51:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:50,264 INFO L225 Difference]: With dead ends: 1106 [2020-04-18 11:51:50,265 INFO L226 Difference]: Without dead ends: 1106 [2020-04-18 11:51:50,265 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:51:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-04-18 11:51:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 806. [2020-04-18 11:51:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-04-18 11:51:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2150 transitions. [2020-04-18 11:51:50,294 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2150 transitions. Word has length 14 [2020-04-18 11:51:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:50,295 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 2150 transitions. [2020-04-18 11:51:50,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:51:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2150 transitions. [2020-04-18 11:51:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:51:50,298 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:50,298 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 11:51:50,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:51:50,502 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 11:51:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -928241881, now seen corresponding path program 1 times [2020-04-18 11:51:50,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:50,504 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [894126543] [2020-04-18 11:51:50,505 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:50,507 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 129 transitions. [2020-04-18 11:51:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:51:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:51:50,508 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash -513026777, now seen corresponding path program 2 times [2020-04-18 11:51:50,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:50,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618725436] [2020-04-18 11:51:50,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:50,579 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 11:51:50,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618725436] [2020-04-18 11:51:50,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:50,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:51:50,580 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:50,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:50,587 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 65 transitions. [2020-04-18 11:51:50,587 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:50,625 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:51:50,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:51:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:51:50,626 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 7 states. [2020-04-18 11:51:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:50,684 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-04-18 11:51:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 129 transitions. [2020-04-18 11:51:50,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:50,686 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [894126543] [2020-04-18 11:51:50,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:50,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:51:50,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [894126543] [2020-04-18 11:51:50,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:51:50,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:50,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:51:50,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:51:50,688 INFO L87 Difference]: Start difference. First operand 806 states and 2150 transitions. Second operand 7 states. [2020-04-18 11:51:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:50,831 INFO L93 Difference]: Finished difference Result 637 states and 1435 transitions. [2020-04-18 11:51:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:51:50,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-04-18 11:51:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:50,835 INFO L225 Difference]: With dead ends: 637 [2020-04-18 11:51:50,835 INFO L226 Difference]: Without dead ends: 633 [2020-04-18 11:51:50,836 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:51:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-04-18 11:51:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 377. [2020-04-18 11:51:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-04-18 11:51:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 859 transitions. [2020-04-18 11:51:50,849 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 859 transitions. Word has length 17 [2020-04-18 11:51:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:50,850 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 859 transitions. [2020-04-18 11:51:50,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:51:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 859 transitions. [2020-04-18 11:51:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:51:50,851 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:50,851 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:51:50,851 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 11:51:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:50,851 INFO L82 PathProgramCache]: Analyzing trace with hash 109793536, now seen corresponding path program 1 times [2020-04-18 11:51:50,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:50,852 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [423855414] [2020-04-18 11:51:50,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:50,854 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 144 transitions. [2020-04-18 11:51:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 11:51:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:51:50,857 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1276039674, now seen corresponding path program 2 times [2020-04-18 11:51:50,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:50,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491123902] [2020-04-18 11:51:50,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:50,908 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 11:51:50,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491123902] [2020-04-18 11:51:50,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:50,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:51:50,909 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:50,911 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:50,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 68 transitions. [2020-04-18 11:51:50,917 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:50,951 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:51:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:51:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:51:50,952 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 7 states. [2020-04-18 11:51:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:51,033 INFO L93 Difference]: Finished difference Result 86 states and 147 transitions. [2020-04-18 11:51:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 147 transitions. [2020-04-18 11:51:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:51:51,034 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:51:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash 109793536, now seen corresponding path program 3 times [2020-04-18 11:51:51,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:51,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905285610] [2020-04-18 11:51:51,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:51,093 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 11:51:51,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905285610] [2020-04-18 11:51:51,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:51,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:51:51,095 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:51,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:51,103 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 62 transitions. [2020-04-18 11:51:51,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:51,139 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:51:51,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:51:51,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:51:51,140 INFO L87 Difference]: Start difference. First operand 86 states and 147 transitions. Second operand 5 states. [2020-04-18 11:51:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:51,169 INFO L93 Difference]: Finished difference Result 92 states and 154 transitions. [2020-04-18 11:51:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 154 transitions. [2020-04-18 11:51:51,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:51,170 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [423855414] [2020-04-18 11:51:51,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:51,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:51:51,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [423855414] [2020-04-18 11:51:51,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:51:51,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:51,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:51:51,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:51:51,173 INFO L87 Difference]: Start difference. First operand 377 states and 859 transitions. Second operand 10 states. [2020-04-18 11:51:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:51,481 INFO L93 Difference]: Finished difference Result 692 states and 1523 transitions. [2020-04-18 11:51:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 11:51:51,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-04-18 11:51:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:51,486 INFO L225 Difference]: With dead ends: 692 [2020-04-18 11:51:51,486 INFO L226 Difference]: Without dead ends: 665 [2020-04-18 11:51:51,486 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:51:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2020-04-18 11:51:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 379. [2020-04-18 11:51:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-04-18 11:51:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 850 transitions. [2020-04-18 11:51:51,499 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 850 transitions. Word has length 18 [2020-04-18 11:51:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:51,500 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 850 transitions. [2020-04-18 11:51:51,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:51:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 850 transitions. [2020-04-18 11:51:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:51:51,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:51,501 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, 1] [2020-04-18 11:51:51,501 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 11:51:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash -557418516, now seen corresponding path program 1 times [2020-04-18 11:51:51,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:51,502 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [505603951] [2020-04-18 11:51:51,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:51,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 220 transitions. [2020-04-18 11:51:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-04-18 11:51:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:51:51,506 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:51,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:51,507 INFO L82 PathProgramCache]: Analyzing trace with hash 672249102, now seen corresponding path program 2 times [2020-04-18 11:51:51,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:51,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927838978] [2020-04-18 11:51:51,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:51,543 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 11:51:51,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927838978] [2020-04-18 11:51:51,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:51,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:51:51,544 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:51,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:51,584 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-04-18 11:51:51,585 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:51,648 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:51:51,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:51:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:51:51,649 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 8 states. [2020-04-18 11:51:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:51,727 INFO L93 Difference]: Finished difference Result 130 states and 227 transitions. [2020-04-18 11:51:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 227 transitions. [2020-04-18 11:51:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:51:51,728 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:51:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:51,728 INFO L82 PathProgramCache]: Analyzing trace with hash -557418516, now seen corresponding path program 3 times [2020-04-18 11:51:51,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:51,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538343881] [2020-04-18 11:51:51,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:52,165 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 11:51:52,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538343881] [2020-04-18 11:51:52,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:52,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 11:51:52,166 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:52,169 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:52,176 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 66 transitions. [2020-04-18 11:51:52,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:52,505 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 11:51:52,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:51:52,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:51:52,506 INFO L87 Difference]: Start difference. First operand 130 states and 227 transitions. Second operand 15 states. [2020-04-18 11:51:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:53,850 INFO L93 Difference]: Finished difference Result 167 states and 283 transitions. [2020-04-18 11:51:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 283 transitions. [2020-04-18 11:51:53,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:53,851 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [505603951] [2020-04-18 11:51:53,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:53,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-04-18 11:51:53,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [505603951] [2020-04-18 11:51:53,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-18 11:51:53,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:53,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 11:51:53,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 11:51:53,853 INFO L87 Difference]: Start difference. First operand 379 states and 850 transitions. Second operand 21 states. [2020-04-18 11:51:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:56,865 INFO L93 Difference]: Finished difference Result 1109 states and 2443 transitions. [2020-04-18 11:51:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-04-18 11:51:56,871 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 22 [2020-04-18 11:51:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:56,877 INFO L225 Difference]: With dead ends: 1109 [2020-04-18 11:51:56,878 INFO L226 Difference]: Without dead ends: 1061 [2020-04-18 11:51:56,880 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=844, Invalid=4268, Unknown=0, NotChecked=0, Total=5112 [2020-04-18 11:51:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-04-18 11:51:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 498. [2020-04-18 11:51:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-04-18 11:51:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1116 transitions. [2020-04-18 11:51:56,901 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1116 transitions. Word has length 22 [2020-04-18 11:51:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:56,901 INFO L479 AbstractCegarLoop]: Abstraction has 498 states and 1116 transitions. [2020-04-18 11:51:56,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-18 11:51:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1116 transitions. [2020-04-18 11:51:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:51:56,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:56,904 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-18 11:51:56,904 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 11:51:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:56,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1386200876, now seen corresponding path program 3 times [2020-04-18 11:51:56,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:56,905 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1051581982] [2020-04-18 11:51:56,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:56,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 11:51:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 11:51:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:51:56,909 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:56,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1386200876, now seen corresponding path program 4 times [2020-04-18 11:51:56,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:56,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709070475] [2020-04-18 11:51:56,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:51:56,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709070475] [2020-04-18 11:51:56,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521945991] [2020-04-18 11:51:56,986 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 11:51:57,093 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:51:57,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:51:57,095 INFO L264 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:51:57,096 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:51:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:51:57,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:51:57,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:51:57,116 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:57,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:57,122 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 11:51:57,123 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:57,159 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:51:57,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:51:57,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:51:57,160 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 9 states. [2020-04-18 11:51:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:57,211 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-04-18 11:51:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-04-18 11:51:57,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:51:57,212 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1051581982] [2020-04-18 11:51:57,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:51:57,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 11:51:57,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1051581982] [2020-04-18 11:51:57,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:51:57,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:51:57,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:51:57,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:51:57,214 INFO L87 Difference]: Start difference. First operand 498 states and 1116 transitions. Second operand 9 states. [2020-04-18 11:51:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:57,282 INFO L93 Difference]: Finished difference Result 897 states and 1966 transitions. [2020-04-18 11:51:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:51:57,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-04-18 11:51:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:51:57,288 INFO L225 Difference]: With dead ends: 897 [2020-04-18 11:51:57,288 INFO L226 Difference]: Without dead ends: 897 [2020-04-18 11:51:57,289 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:51:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-04-18 11:51:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 620. [2020-04-18 11:51:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-04-18 11:51:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1411 transitions. [2020-04-18 11:51:57,306 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1411 transitions. Word has length 22 [2020-04-18 11:51:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:51:57,306 INFO L479 AbstractCegarLoop]: Abstraction has 620 states and 1411 transitions. [2020-04-18 11:51:57,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:51:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1411 transitions. [2020-04-18 11:51:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:51:57,308 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:51:57,308 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:51:57,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:51:57,516 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 11:51:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1472402434, now seen corresponding path program 1 times [2020-04-18 11:51:57,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:51:57,516 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1373949102] [2020-04-18 11:51:57,517 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:57,519 INFO L259 McrAutomatonBuilder]: Finished intersection with 162 states and 296 transitions. [2020-04-18 11:51:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-04-18 11:51:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:51:57,520 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:51:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:57,521 INFO L82 PathProgramCache]: Analyzing trace with hash 331584572, now seen corresponding path program 2 times [2020-04-18 11:51:57,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:57,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475254347] [2020-04-18 11:51:57,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:51:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:51:57,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475254347] [2020-04-18 11:51:57,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:51:57,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:51:57,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:51:57,559 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:51:57,573 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 112 transitions. [2020-04-18 11:51:57,573 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:51:57,632 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:51:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:51:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:51:57,633 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 8 states. [2020-04-18 11:51:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:51:57,709 INFO L93 Difference]: Finished difference Result 174 states and 307 transitions. [2020-04-18 11:51:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 307 transitions. [2020-04-18 11:51:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:51:57,710 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:51:57,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:51:57,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1472402434, now seen corresponding path program 3 times [2020-04-18 11:51:57,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:51:57,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296897285] [2020-04-18 11:51:57,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:51:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:51:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:51:57,882 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:51:57,883 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:51:57,883 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:51:57,884 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 11:51:57,884 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 11:51:57,885 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 11:51:57,892 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [568] [568] L4-->L978-1: Formula: (and (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-847782505 4294967296))) (let ((.cse1 (<= .cse0 2147483647))) (or (and (= |t1Thread1of1ForFork0_push_#in~x_Out-847782505| .cse0) .cse1) (and (= |t1Thread1of1ForFork0_push_#in~x_Out-847782505| (+ .cse0 (- 4294967296))) (not .cse1))))) (not (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_In-847782505 0)) (= |~#arr~0.base_In-847782505| |t1Thread1of1ForFork0_push_#in~stack.base_Out-847782505|) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-847782505| |~#arr~0.offset_In-847782505|)) InVars {~#arr~0.offset=|~#arr~0.offset_In-847782505|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_In-847782505, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-847782505, ~#arr~0.base=|~#arr~0.base_In-847782505|} OutVars{t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-847782505|, ~#arr~0.offset=|~#arr~0.offset_In-847782505|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_In-847782505, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-847782505|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-847782505, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-847782505|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-847782505|, ~#arr~0.base=|~#arr~0.base_In-847782505|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-04-18 11:51:57,894 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [569] [569] L978-2-->L981: Formula: (and (<= 0 (+ |t1Thread1of1ForFork0_#t~ret44_In-478520085| 2147483648)) (= ~flag~0_Out-478520085 1) (<= |t1Thread1of1ForFork0_#t~ret44_In-478520085| 2147483647) (not (= |t1Thread1of1ForFork0_#t~ret44_In-478520085| (- 1)))) InVars {t1Thread1of1ForFork0_#t~ret44=|t1Thread1of1ForFork0_#t~ret44_In-478520085|} OutVars{t1Thread1of1ForFork0_#t~ret44=|t1Thread1of1ForFork0_#t~ret44_Out-478520085|, ~flag~0=~flag~0_Out-478520085} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret44, ~flag~0] because there is no mapped edge [2020-04-18 11:51:57,897 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [579] [579] L993-3-->L988-6: Formula: (and (<= 0 (+ |t2Thread1of1ForFork1_#t~ret47_In-649480674| 2147483648)) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret47_In-649480674|)) (= (store |#pthreadsMutex_In-649480674| |~#m~0.base_In-649480674| (store (select |#pthreadsMutex_In-649480674| |~#m~0.base_In-649480674|) |~#m~0.offset_In-649480674| 0)) |#pthreadsMutex_Out-649480674|) (<= |t2Thread1of1ForFork1_#t~ret47_In-649480674| 2147483647) (= t2Thread1of1ForFork1_~i~1_Out-649480674 (+ t2Thread1of1ForFork1_~i~1_In-649480674 1))) InVars {#pthreadsMutex=|#pthreadsMutex_In-649480674|, ~#m~0.base=|~#m~0.base_In-649480674|, t2Thread1of1ForFork1_#t~ret47=|t2Thread1of1ForFork1_#t~ret47_In-649480674|, ~#m~0.offset=|~#m~0.offset_In-649480674|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In-649480674} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-649480674|, ~#m~0.base=|~#m~0.base_In-649480674|, t2Thread1of1ForFork1_#t~ret47=|t2Thread1of1ForFork1_#t~ret47_Out-649480674|, ~#m~0.offset=|~#m~0.offset_In-649480674|, t2Thread1of1ForFork1_#t~post45=|t2Thread1of1ForFork1_#t~post45_Out-649480674|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out-649480674} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_#t~ret47, t2Thread1of1ForFork1_#t~post45, t2Thread1of1ForFork1_~i~1] because there is no mapped edge [2020-04-18 11:51:57,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:51:57 BasicIcfg [2020-04-18 11:51:57,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:51:57,984 INFO L168 Benchmark]: Toolchain (without parser) took 15048.57 ms. Allocated memory was 143.1 MB in the beginning and 374.9 MB in the end (delta: 231.7 MB). Free memory was 99.2 MB in the beginning and 216.1 MB in the end (delta: -116.8 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,986 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.47 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 97.3 MB in the beginning and 129.2 MB in the end (delta: -31.9 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.85 ms. Allocated memory is still 200.8 MB. Free memory was 129.2 MB in the beginning and 126.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,990 INFO L168 Benchmark]: Boogie Preprocessor took 39.76 ms. Allocated memory is still 200.8 MB. Free memory was 126.3 MB in the beginning and 124.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,990 INFO L168 Benchmark]: RCFGBuilder took 637.76 ms. Allocated memory is still 200.8 MB. Free memory was 124.8 MB in the beginning and 91.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,991 INFO L168 Benchmark]: TraceAbstraction took 13410.52 ms. Allocated memory was 200.8 MB in the beginning and 374.9 MB in the end (delta: 174.1 MB). Free memory was 90.5 MB in the beginning and 216.1 MB in the end (delta: -125.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:51:57,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 869.47 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 97.3 MB in the beginning and 129.2 MB in the end (delta: -31.9 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.85 ms. Allocated memory is still 200.8 MB. Free memory was 129.2 MB in the beginning and 126.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.76 ms. Allocated memory is still 200.8 MB. Free memory was 126.3 MB in the beginning and 124.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 637.76 ms. Allocated memory is still 200.8 MB. Free memory was 124.8 MB in the beginning and 91.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13410.52 ms. Allocated memory was 200.8 MB in the beginning and 374.9 MB in the end (delta: 174.1 MB). Free memory was 90.5 MB in the beginning and 216.1 MB in the end (delta: -125.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.9s, 144 ProgramPointsBefore, 42 ProgramPointsAfterwards, 149 TransitionsBefore, 42 TransitionsAfterwards, 6532 CoEnabledTransitionPairs, 8 FixpointIterations, 30 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 3500 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 9212 CheckedPairsTotal, 126 TotalNumberOfCompositions - CounterExampleResult [Line: 922]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L916] 0 static int top=0; [L917] 0 static unsigned int arr[(5)]; [L918] 0 pthread_mutex_t m; [L919] 0 _Bool flag=(0); [L1002] 0 pthread_t id1, id2; [L1004] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={9:0}, flag=0, m={6:0}, top=0] [L971] 1 int i; [L972] 1 unsigned int tmp; [L973] 1 i=0 VAL [arr={9:0}, flag=0, m={6:0}, top=0] [L1005] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={9:0}, flag=0, m={6:0}, top=0] [L987] 2 int i; [L988] 2 i=0 VAL [arr={9:0}, flag=0, m={6:0}, top=0] [L973] COND TRUE 1 i<(5) [L976] 1 tmp = __VERIFIER_nondet_uint() [L943] COND FALSE 1 !(top==(5)) [L935] 1 return top; [L950] 1 stack[get_top()] = x VAL [arr={9:0}, flag=0, m={6:0}, top=0] [L927] 1 top++ [L953] 1 return 0; [L973] 1 i++ VAL [arr={9:0}, flag=1, m={6:0}, top=1] [L988] COND TRUE 2 i<(5) [L991] COND TRUE 2 \read(flag) [L935] 2 return top; VAL [arr={9:0}, flag=1, m={6:0}, top=1] [L957] COND FALSE 2 !(get_top()==0) [L931] 2 top-- VAL [arr={9:0}, flag=1, m={6:0}, top=0] [L935] 2 return top; [L965] EXPR 2 stack[get_top()] [L965] 2 return stack[get_top()]; [L988] COND TRUE 2 i<(5) [L991] COND TRUE 2 \read(flag) [L935] 2 return top; [L957] COND TRUE 2 get_top()==0 [L960] 2 return (-2); [L993] COND TRUE 2 !(pop(arr)!=(-2)) [L922] 2 __VERIFIER_error() VAL [arr={9:0}, flag=1, m={6:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 138 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 456 SDtfs, 1050 SDslu, 1935 SDs, 0 SdLazy, 1391 SolverSat, 186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=806occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1905 StatesRemovedByMinimization, 7 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 incorrect! Received shutdown request...