/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:31:38,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:31:38,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:31:38,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:31:38,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:31:38,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:31:38,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:31:38,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:31:38,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:31:38,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:31:38,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:31:38,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:31:38,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:31:38,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:31:38,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:31:38,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:31:38,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:31:38,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:31:38,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:31:38,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:31:38,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:31:38,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:31:38,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:31:38,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:31:38,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:31:38,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:31:38,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:31:38,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:31:38,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:31:38,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:31:38,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:31:38,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:31:38,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:31:38,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:31:38,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:31:38,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:31:38,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:31:38,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:31:38,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:31:38,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:31:38,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:31:38,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:31:38,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:31:38,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:31:38,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:31:38,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:31:38,648 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:31:38,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:31:38,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:31:38,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:31:38,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:31:38,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:31:38,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:31:38,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:31:38,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:31:38,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:31:38,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:31:38,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:31:38,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:31:38,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:31:38,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:31:38,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:31:38,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:31:38,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:31:38,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:31:38,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:31:38,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:31:38,652 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:31:38,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:31:38,652 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:31:38,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:31:38,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:31:38,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:31:38,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:31:38,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:31:38,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:31:38,994 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:31:38,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-04-18 11:31:39,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a484e14e/1e7e83c10c5f484fac689e12669081d2/FLAG31577c240 [2020-04-18 11:31:39,665 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:31:39,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-04-18 11:31:39,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a484e14e/1e7e83c10c5f484fac689e12669081d2/FLAG31577c240 [2020-04-18 11:31:39,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a484e14e/1e7e83c10c5f484fac689e12669081d2 [2020-04-18 11:31:39,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:31:39,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:31:39,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:31:39,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:31:39,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:31:39,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:31:39" (1/1) ... [2020-04-18 11:31:39,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6808ed3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:39, skipping insertion in model container [2020-04-18 11:31:39,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:31:39" (1/1) ... [2020-04-18 11:31:39,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:31:40,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:31:40,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:31:40,519 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:31:40,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:31:40,632 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:31:40,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40 WrapperNode [2020-04-18 11:31:40,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:31:40,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:31:40,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:31:40,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:31:40,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:31:40,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:31:40,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:31:40,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:31:40,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... [2020-04-18 11:31:40,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:31:40,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:31:40,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:31:40,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:31:40,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:31:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 11:31:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 11:31:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 11:31:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 11:31:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:31:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:31:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:31:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:31:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:31:40,797 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 11:31:41,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:31:41,140 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-04-18 11:31:41,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:31:41 BoogieIcfgContainer [2020-04-18 11:31:41,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:31:41,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:31:41,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:31:41,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:31:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:31:39" (1/3) ... [2020-04-18 11:31:41,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dc44aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:31:41, skipping insertion in model container [2020-04-18 11:31:41,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:40" (2/3) ... [2020-04-18 11:31:41,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dc44aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:31:41, skipping insertion in model container [2020-04-18 11:31:41,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:31:41" (3/3) ... [2020-04-18 11:31:41,154 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-04-18 11:31:41,165 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:31:41,165 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:31:41,173 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:31:41,174 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:31:41,199 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,199 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,199 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,200 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,201 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,201 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,201 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,202 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,202 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,202 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,203 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,203 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,204 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,205 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,205 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,209 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,209 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,210 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,210 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,221 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,222 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,222 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:41,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:31:41,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:41,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:41,252 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:41,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:41,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:41,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:41,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:41,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:41,267 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-04-18 11:31:41,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-04-18 11:31:41,308 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-04-18 11:31:41,308 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:31:41,313 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-04-18 11:31:41,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-04-18 11:31:41,343 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-04-18 11:31:41,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:31:41,347 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-04-18 11:31:41,351 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-04-18 11:31:41,353 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:42,662 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-04-18 11:31:42,734 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-04-18 11:31:42,734 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-04-18 11:31:42,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-04-18 11:31:42,746 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-04-18 11:31:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 11:31:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:42,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:42,756 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:42,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-04-18 11:31:42,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:42,767 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1904709791] [2020-04-18 11:31:42,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:42,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:42,791 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:42,792 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 2 times [2020-04-18 11:31:42,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:42,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178859913] [2020-04-18 11:31:42,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:42,987 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 11:31:42,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178859913] [2020-04-18 11:31:42,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:42,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:42,990 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:42,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:42,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:42,991 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:42,999 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:43,005 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,009 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:43,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:43,010 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1904709791] [2020-04-18 11:31:43,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:43,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:43,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1904709791] [2020-04-18 11:31:43,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:43,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:43,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:43,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:43,018 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-04-18 11:31:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,034 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-04-18 11:31:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:43,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:43,046 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:31:43,046 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 11:31:43,048 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 11:31:43,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 11:31:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 11:31:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-04-18 11:31:43,087 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-04-18 11:31:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:43,087 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-04-18 11:31:43,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-04-18 11:31:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:31:43,088 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:43,088 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:43,089 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-04-18 11:31:43,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:43,090 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [347551741] [2020-04-18 11:31:43,090 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,092 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 15 transitions. [2020-04-18 11:31:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:31:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:31:43,096 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1124688655, now seen corresponding path program 2 times [2020-04-18 11:31:43,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:43,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335501173] [2020-04-18 11:31:43,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:43,190 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 11:31:43,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335501173] [2020-04-18 11:31:43,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:43,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:43,192 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:43,193 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,199 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-04-18 11:31:43,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:43,207 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:43,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:43,208 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:31:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,212 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 11:31:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 11:31:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:31:43,212 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 3 times [2020-04-18 11:31:43,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:43,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47992754] [2020-04-18 11:31:43,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:43,320 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 11:31:43,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47992754] [2020-04-18 11:31:43,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:43,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:43,322 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:43,322 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,324 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 11:31:43,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:43,334 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:31:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:31:43,335 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2020-04-18 11:31:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,341 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 11:31:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 11:31:43,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:43,342 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [347551741] [2020-04-18 11:31:43,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:43,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:31:43,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [347551741] [2020-04-18 11:31:43,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:31:43,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:31:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:31:43,344 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-04-18 11:31:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:43,354 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-04-18 11:31:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:31:43,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 11:31:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:43,356 INFO L225 Difference]: With dead ends: 26 [2020-04-18 11:31:43,356 INFO L226 Difference]: Without dead ends: 24 [2020-04-18 11:31:43,357 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:31:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-04-18 11:31:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-04-18 11:31:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-04-18 11:31:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-04-18 11:31:43,362 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-04-18 11:31:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:43,362 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-04-18 11:31:43,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:31:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-04-18 11:31:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:31:43,363 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:43,363 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:43,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,364 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-04-18 11:31:43,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:43,364 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1121067652] [2020-04-18 11:31:43,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:43,365 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:31:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:31:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:31:43,366 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:43,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:43,366 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 2 times [2020-04-18 11:31:43,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:43,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359801961] [2020-04-18 11:31:43,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:43,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:31:43,424 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:31:43,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:31:43,425 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:31:43,425 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 11:31:43,434 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,434 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,434 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,434 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,434 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,435 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,435 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,435 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,435 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,436 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,436 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,437 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,437 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,437 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,438 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,438 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,438 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,438 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,438 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,438 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,439 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,439 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,439 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,439 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,443 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,443 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,443 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,443 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,443 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,445 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,445 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,446 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,446 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,446 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,448 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,448 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,448 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,450 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,450 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,450 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,450 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,450 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,451 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:43,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:31:43,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:43,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:43,453 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:43,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:43,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:43,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:43,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:43,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:43,456 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-04-18 11:31:43,456 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-04-18 11:31:43,476 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-04-18 11:31:43,476 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 11:31:43,477 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-04-18 11:31:43,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-04-18 11:31:43,497 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-04-18 11:31:43,497 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 11:31:43,500 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-04-18 11:31:43,504 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-04-18 11:31:43,504 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:44,736 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-18 11:31:44,813 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-04-18 11:31:44,813 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 11:31:44,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-04-18 11:31:44,825 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-04-18 11:31:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-04-18 11:31:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:44,826 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:44,827 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:44,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,827 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-04-18 11:31:44,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:44,828 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1946310124] [2020-04-18 11:31:44,828 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,829 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:44,829 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:44,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 2 times [2020-04-18 11:31:44,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:44,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595958701] [2020-04-18 11:31:44,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:44,858 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 11:31:44,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595958701] [2020-04-18 11:31:44,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:44,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:44,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:44,860 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,861 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:44,861 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:44,864 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:44,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:44,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:44,865 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:44,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:44,866 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:44,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:44,866 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1946310124] [2020-04-18 11:31:44,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:44,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:44,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1946310124] [2020-04-18 11:31:44,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:44,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:44,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:44,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:44,868 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-04-18 11:31:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:44,908 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-04-18 11:31:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:44,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:44,913 INFO L225 Difference]: With dead ends: 185 [2020-04-18 11:31:44,914 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 11:31:44,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 11:31:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 11:31:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 11:31:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-04-18 11:31:44,946 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-04-18 11:31:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:44,947 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-04-18 11:31:44,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-04-18 11:31:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:44,948 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:44,948 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:44,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-04-18 11:31:44,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:44,949 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1373270703] [2020-04-18 11:31:44,950 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:44,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:44,952 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 2 times [2020-04-18 11:31:44,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:44,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060094952] [2020-04-18 11:31:44,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:45,007 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 11:31:45,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060094952] [2020-04-18 11:31:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:45,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:45,009 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:45,010 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:45,010 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:45,024 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:45,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:45,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:45,025 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2020-04-18 11:31:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:45,061 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 11:31:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 11:31:45,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:45,062 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1373270703] [2020-04-18 11:31:45,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:45,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:45,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1373270703] [2020-04-18 11:31:45,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:45,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:45,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:45,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:45,063 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-04-18 11:31:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:45,143 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-04-18 11:31:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:45,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:45,147 INFO L225 Difference]: With dead ends: 205 [2020-04-18 11:31:45,147 INFO L226 Difference]: Without dead ends: 201 [2020-04-18 11:31:45,147 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-04-18 11:31:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-04-18 11:31:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 11:31:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-04-18 11:31:45,188 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-04-18 11:31:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:45,189 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-04-18 11:31:45,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-04-18 11:31:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:45,190 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:45,190 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:45,190 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:45,192 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-04-18 11:31:45,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:45,192 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1761746861] [2020-04-18 11:31:45,193 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:45,194 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:45,195 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:45,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 2 times [2020-04-18 11:31:45,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:45,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151107709] [2020-04-18 11:31:45,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:45,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151107709] [2020-04-18 11:31:45,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:45,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:45,270 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:45,273 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:45,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:45,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:45,289 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:45,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:45,290 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-04-18 11:31:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:45,310 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2020-04-18 11:31:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2020-04-18 11:31:45,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:45,312 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1761746861] [2020-04-18 11:31:45,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:45,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:45,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1761746861] [2020-04-18 11:31:45,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:45,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:45,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:45,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:45,313 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-04-18 11:31:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:45,365 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-04-18 11:31:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:45,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:45,368 INFO L225 Difference]: With dead ends: 189 [2020-04-18 11:31:45,368 INFO L226 Difference]: Without dead ends: 185 [2020-04-18 11:31:45,369 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-04-18 11:31:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-04-18 11:31:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-04-18 11:31:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-04-18 11:31:45,383 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-04-18 11:31:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:45,384 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-04-18 11:31:45,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-04-18 11:31:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:31:45,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:45,386 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:45,386 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:45,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:45,386 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-04-18 11:31:45,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:45,387 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [375831833] [2020-04-18 11:31:45,388 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:45,388 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-04-18 11:31:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 11:31:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:31:45,389 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 2 times [2020-04-18 11:31:45,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:45,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577806454] [2020-04-18 11:31:45,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:45,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:31:45,423 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:31:45,423 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:31:45,424 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:31:45,425 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 11:31:45,435 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,436 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,436 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,437 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,437 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,437 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,437 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,437 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,437 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,438 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,438 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,438 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,438 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,438 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,438 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,439 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,439 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,439 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,439 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,439 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,439 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,440 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,440 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,440 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,441 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,441 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,442 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,443 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,443 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,443 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,444 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,444 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,444 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,444 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,444 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,445 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,445 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,445 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,445 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,446 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,446 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,447 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,447 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,447 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,447 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,448 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,448 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,448 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,448 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,449 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,450 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,451 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,451 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,451 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,451 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,453 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,453 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,461 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:45,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 11:31:45,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:45,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:45,463 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:45,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:45,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:45,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:45,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:45,464 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:45,466 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-04-18 11:31:45,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-04-18 11:31:45,484 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-04-18 11:31:45,485 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 11:31:45,486 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-04-18 11:31:45,490 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-04-18 11:31:45,506 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-04-18 11:31:45,507 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 11:31:45,508 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-04-18 11:31:45,511 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-04-18 11:31:45,511 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:47,002 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-04-18 11:31:47,198 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-04-18 11:31:47,198 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-04-18 11:31:47,198 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-04-18 11:31:47,228 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-04-18 11:31:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-04-18 11:31:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:47,229 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:47,229 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:47,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:47,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,230 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-04-18 11:31:47,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:47,230 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2116189185] [2020-04-18 11:31:47,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,231 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:47,232 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 2 times [2020-04-18 11:31:47,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:47,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456657271] [2020-04-18 11:31:47,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:47,265 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 11:31:47,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456657271] [2020-04-18 11:31:47,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:47,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:47,266 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:47,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:47,267 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:47,280 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:47,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:47,280 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,281 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:47,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:47,282 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2116189185] [2020-04-18 11:31:47,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:47,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:47,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2116189185] [2020-04-18 11:31:47,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:47,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:47,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:47,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:47,283 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-04-18 11:31:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,314 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-04-18 11:31:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:47,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:47,321 INFO L225 Difference]: With dead ends: 600 [2020-04-18 11:31:47,321 INFO L226 Difference]: Without dead ends: 559 [2020-04-18 11:31:47,321 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-04-18 11:31:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-04-18 11:31:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-04-18 11:31:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-04-18 11:31:47,372 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-04-18 11:31:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:47,373 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-04-18 11:31:47,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-04-18 11:31:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:47,373 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:47,374 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:47,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,374 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-04-18 11:31:47,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:47,375 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1336948255] [2020-04-18 11:31:47,379 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,380 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:47,381 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1142033206, now seen corresponding path program 2 times [2020-04-18 11:31:47,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:47,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119418896] [2020-04-18 11:31:47,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:47,430 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 11:31:47,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119418896] [2020-04-18 11:31:47,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:47,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:47,431 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:47,432 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,433 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:31:47,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:47,440 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:47,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:47,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:47,441 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:31:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,446 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:47,447 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 3 times [2020-04-18 11:31:47,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:47,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756290482] [2020-04-18 11:31:47,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:47,479 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 11:31:47,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756290482] [2020-04-18 11:31:47,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:47,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:47,481 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:47,481 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:47,483 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:47,491 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:47,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:47,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:47,492 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:31:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,509 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:47,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:47,510 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1336948255] [2020-04-18 11:31:47,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:47,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:47,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1336948255] [2020-04-18 11:31:47,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:47,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:47,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:47,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:47,511 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-04-18 11:31:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,593 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-04-18 11:31:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:47,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:47,604 INFO L225 Difference]: With dead ends: 817 [2020-04-18 11:31:47,604 INFO L226 Difference]: Without dead ends: 812 [2020-04-18 11:31:47,605 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-04-18 11:31:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-04-18 11:31:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-04-18 11:31:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-04-18 11:31:47,642 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-04-18 11:31:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:47,643 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-04-18 11:31:47,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-04-18 11:31:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:47,645 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:47,645 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:47,645 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,646 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-04-18 11:31:47,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:47,646 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [667400157] [2020-04-18 11:31:47,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,647 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:47,651 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1586901388, now seen corresponding path program 2 times [2020-04-18 11:31:47,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:47,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628165597] [2020-04-18 11:31:47,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:47,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628165597] [2020-04-18 11:31:47,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:47,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:47,709 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:47,711 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,714 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:31:47,714 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:47,720 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:47,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:47,721 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:31:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,726 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:47,726 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:47,727 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 3 times [2020-04-18 11:31:47,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:47,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676241193] [2020-04-18 11:31:47,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:47,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676241193] [2020-04-18 11:31:47,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:47,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:47,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:47,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:47,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:47,819 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:47,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:47,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:47,820 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:31:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,839 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:47,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:47,839 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [667400157] [2020-04-18 11:31:47,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:47,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:47,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [667400157] [2020-04-18 11:31:47,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:47,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:47,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:47,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:47,842 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-04-18 11:31:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:47,909 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-04-18 11:31:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:47,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:47,919 INFO L225 Difference]: With dead ends: 843 [2020-04-18 11:31:47,919 INFO L226 Difference]: Without dead ends: 836 [2020-04-18 11:31:47,920 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-04-18 11:31:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-04-18 11:31:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-04-18 11:31:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-04-18 11:31:47,950 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-04-18 11:31:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:47,951 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-04-18 11:31:47,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-04-18 11:31:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:47,952 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:47,952 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:47,952 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-04-18 11:31:47,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:47,953 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1332413167] [2020-04-18 11:31:47,954 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,956 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:31:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:31:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:47,958 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:47,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1442093623, now seen corresponding path program 2 times [2020-04-18 11:31:47,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:47,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328537017] [2020-04-18 11:31:47,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:47,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328537017] [2020-04-18 11:31:47,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:47,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:47,984 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:47,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:47,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:31:47,992 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:47,996 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:47,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:47,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:47,997 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:31:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,006 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:31:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:31:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:48,007 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2771455, now seen corresponding path program 3 times [2020-04-18 11:31:48,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063856564] [2020-04-18 11:31:48,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:48,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063856564] [2020-04-18 11:31:48,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:48,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:48,056 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,066 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:31:48,066 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:31:48,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:48,079 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 5 states. [2020-04-18 11:31:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,115 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:31:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:31:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:48,116 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,116 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 4 times [2020-04-18 11:31:48,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72989406] [2020-04-18 11:31:48,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:48,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72989406] [2020-04-18 11:31:48,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761502339] [2020-04-18 11:31:48,177 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 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 11:31:48,252 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:48,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:48,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:48,255 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:48,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:48,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:48,283 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,284 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:31:48,287 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,319 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:48,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:48,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:48,320 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 9 states. [2020-04-18 11:31:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,419 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:31:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:31:48,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:48,420 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 5 times [2020-04-18 11:31:48,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:48,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891347178] [2020-04-18 11:31:48,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:48,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891347178] [2020-04-18 11:31:48,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:48,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:48,487 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:48,488 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:48,490 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:31:48,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:48,510 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:48,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:48,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:48,511 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:31:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,620 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:31:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:31:48,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:48,621 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1332413167] [2020-04-18 11:31:48,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:48,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:48,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1332413167] [2020-04-18 11:31:48,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:48,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:48,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:48,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:48,623 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 11 states. [2020-04-18 11:31:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:48,825 INFO L93 Difference]: Finished difference Result 1142 states and 2948 transitions. [2020-04-18 11:31:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:48,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:31:48,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:48,833 INFO L225 Difference]: With dead ends: 1142 [2020-04-18 11:31:48,833 INFO L226 Difference]: Without dead ends: 1127 [2020-04-18 11:31:48,834 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:48,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-04-18 11:31:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 536. [2020-04-18 11:31:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-04-18 11:31:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-04-18 11:31:48,870 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-04-18 11:31:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:48,870 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-04-18 11:31:48,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-04-18 11:31:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:48,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:48,872 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:49,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:49,077 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:49,078 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-04-18 11:31:49,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:49,078 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1445099860] [2020-04-18 11:31:49,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:49,080 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:31:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:31:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:49,081 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:49,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1382437854, now seen corresponding path program 2 times [2020-04-18 11:31:49,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:49,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542677526] [2020-04-18 11:31:49,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:49,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542677526] [2020-04-18 11:31:49,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:49,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:49,104 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:49,106 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:49,109 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:31:49,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:49,113 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:49,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:49,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:49,114 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:31:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:49,117 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:49,118 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:49,118 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 3 times [2020-04-18 11:31:49,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:49,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377983341] [2020-04-18 11:31:49,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:49,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377983341] [2020-04-18 11:31:49,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:49,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:49,185 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:49,189 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:49,191 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:31:49,191 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:49,206 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:49,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:49,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:49,207 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:31:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:49,224 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:49,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:49,225 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1445099860] [2020-04-18 11:31:49,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:49,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:49,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1445099860] [2020-04-18 11:31:49,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:49,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:49,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:49,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:49,229 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-04-18 11:31:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:49,284 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-04-18 11:31:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:49,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:31:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:49,290 INFO L225 Difference]: With dead ends: 736 [2020-04-18 11:31:49,290 INFO L226 Difference]: Without dead ends: 728 [2020-04-18 11:31:49,291 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-04-18 11:31:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-04-18 11:31:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-04-18 11:31:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-04-18 11:31:49,312 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-04-18 11:31:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:49,313 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-04-18 11:31:49,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-04-18 11:31:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:31:49,315 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:49,315 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:49,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-04-18 11:31:49,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:49,316 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [680642185] [2020-04-18 11:31:49,317 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:49,317 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-04-18 11:31:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 11:31:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:31:49,318 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:49,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 2 times [2020-04-18 11:31:49,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:49,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992262067] [2020-04-18 11:31:49,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:31:49,348 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:31:49,349 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:31:49,349 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:31:49,350 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:31:49,350 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 11:31:49,362 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,363 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,363 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,363 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,363 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,363 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,363 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,364 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,365 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,366 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,367 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,368 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,368 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,368 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,368 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,368 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,368 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,369 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,369 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,369 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,369 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,369 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,369 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,370 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,370 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,370 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,370 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,370 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,370 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,371 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,372 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,372 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,372 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,372 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,372 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,372 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,373 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,373 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,373 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,373 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,373 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,373 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,374 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,374 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,374 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,374 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,374 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,375 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,376 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,376 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,376 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,376 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,376 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,378 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,378 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,378 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,379 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,379 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,380 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,380 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,381 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,381 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,381 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,382 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,383 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,383 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,383 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,383 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,384 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,385 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,385 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,385 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,385 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,385 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,387 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,387 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,387 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,387 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,387 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,387 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,389 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,390 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,390 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,391 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,391 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,391 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,392 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,392 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,392 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:49,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 11:31:49,394 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:49,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:49,394 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:49,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:49,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:49,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:49,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:49,395 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:49,396 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-04-18 11:31:49,396 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-04-18 11:31:49,416 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-04-18 11:31:49,416 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 11:31:49,418 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-04-18 11:31:49,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-04-18 11:31:49,438 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-04-18 11:31:49,438 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 11:31:49,440 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-04-18 11:31:49,443 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-04-18 11:31:49,444 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:51,266 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-04-18 11:31:51,327 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-04-18 11:31:51,328 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-04-18 11:31:51,328 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-04-18 11:31:51,444 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-04-18 11:31:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-04-18 11:31:51,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:51,445 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:51,445 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:31:51,446 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:51,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,446 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-04-18 11:31:51,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:51,446 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [334034779] [2020-04-18 11:31:51,447 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,447 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:31:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:31:51,448 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,448 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 2 times [2020-04-18 11:31:51,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:51,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747412565] [2020-04-18 11:31:51,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:51,460 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 11:31:51,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747412565] [2020-04-18 11:31:51,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:51,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:51,462 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:51,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,462 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:31:51,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:51,465 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:51,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:51,465 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:31:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,466 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:31:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:31:51,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:51,466 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [334034779] [2020-04-18 11:31:51,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:51,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:51,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [334034779] [2020-04-18 11:31:51,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:51,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:51,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:51,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:51,468 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-04-18 11:31:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,498 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-04-18 11:31:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:51,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:31:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:51,515 INFO L225 Difference]: With dead ends: 1889 [2020-04-18 11:31:51,515 INFO L226 Difference]: Without dead ends: 1767 [2020-04-18 11:31:51,515 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:51,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-04-18 11:31:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-04-18 11:31:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-04-18 11:31:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-04-18 11:31:51,599 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-04-18 11:31:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:51,599 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-04-18 11:31:51,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-04-18 11:31:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:51,600 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:51,600 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:51,600 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,601 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-04-18 11:31:51,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:51,601 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1422873567] [2020-04-18 11:31:51,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,602 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:31:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:31:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:51,603 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,604 INFO L82 PathProgramCache]: Analyzing trace with hash 773468699, now seen corresponding path program 2 times [2020-04-18 11:31:51,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:51,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106159993] [2020-04-18 11:31:51,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:51,621 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 11:31:51,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106159993] [2020-04-18 11:31:51,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:51,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:51,623 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:51,623 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,624 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:31:51,624 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:51,629 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:51,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:51,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:51,630 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:31:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,633 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:31:51,634 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,634 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 3 times [2020-04-18 11:31:51,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:51,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119948951] [2020-04-18 11:31:51,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:51,663 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 11:31:51,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119948951] [2020-04-18 11:31:51,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:51,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:51,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:51,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,665 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:31:51,665 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:51,679 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:51,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:51,679 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:31:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,697 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:31:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:31:51,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:51,698 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1422873567] [2020-04-18 11:31:51,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:51,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:51,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1422873567] [2020-04-18 11:31:51,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:51,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:51,699 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-04-18 11:31:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:51,836 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-04-18 11:31:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:51,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:31:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:51,861 INFO L225 Difference]: With dead ends: 2905 [2020-04-18 11:31:51,861 INFO L226 Difference]: Without dead ends: 2899 [2020-04-18 11:31:51,862 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-04-18 11:31:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-04-18 11:31:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-04-18 11:31:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-04-18 11:31:51,965 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-04-18 11:31:51,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:51,965 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-04-18 11:31:51,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-04-18 11:31:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:51,966 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:51,966 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:51,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-04-18 11:31:51,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:51,967 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2063219839] [2020-04-18 11:31:51,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:31:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:31:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:51,969 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:51,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:51,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1718911887, now seen corresponding path program 2 times [2020-04-18 11:31:51,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:51,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131061882] [2020-04-18 11:31:51,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:51,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131061882] [2020-04-18 11:31:51,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:51,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:51,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:51,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:51,994 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:31:51,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:51,997 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:51,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:51,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:51,998 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:31:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,000 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:31:52,001 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:52,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 3 times [2020-04-18 11:31:52,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:52,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733007077] [2020-04-18 11:31:52,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:52,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733007077] [2020-04-18 11:31:52,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:52,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:52,030 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,030 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:31:52,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,040 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:52,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:52,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:52,040 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:31:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,056 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:31:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:31:52,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:52,056 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2063219839] [2020-04-18 11:31:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:52,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:52,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2063219839] [2020-04-18 11:31:52,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:52,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:52,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:52,058 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-04-18 11:31:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,133 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-04-18 11:31:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:52,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:31:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:52,161 INFO L225 Difference]: With dead ends: 3204 [2020-04-18 11:31:52,161 INFO L226 Difference]: Without dead ends: 3194 [2020-04-18 11:31:52,162 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-04-18 11:31:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-04-18 11:31:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-04-18 11:31:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-04-18 11:31:52,277 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-04-18 11:31:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:52,278 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-04-18 11:31:52,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-04-18 11:31:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:52,278 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:52,279 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:52,279 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-04-18 11:31:52,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:52,280 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [691313144] [2020-04-18 11:31:52,280 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:31:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:31:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:52,282 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash 746064128, now seen corresponding path program 2 times [2020-04-18 11:31:52,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:52,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117695148] [2020-04-18 11:31:52,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:52,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117695148] [2020-04-18 11:31:52,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:52,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:52,303 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,307 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:31:52,307 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,310 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:52,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:52,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:52,311 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:31:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,318 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:31:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:31:52,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:52,318 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:52,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1842869288, now seen corresponding path program 3 times [2020-04-18 11:31:52,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:52,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569243368] [2020-04-18 11:31:52,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:52,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569243368] [2020-04-18 11:31:52,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:52,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:52,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,371 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,374 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:31:52,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:52,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:52,385 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 5 states. [2020-04-18 11:31:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,421 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:31:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:31:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:52,422 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 4 times [2020-04-18 11:31:52,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:52,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516311271] [2020-04-18 11:31:52,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:52,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516311271] [2020-04-18 11:31:52,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621290813] [2020-04-18 11:31:52,468 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 11:31:52,547 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:52,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:52,548 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:52,550 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:52,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:52,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:52,569 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:31:52,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,607 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:52,608 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 9 states. [2020-04-18 11:31:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,703 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:31:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:31:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:31:52,704 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 5 times [2020-04-18 11:31:52,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:52,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520386113] [2020-04-18 11:31:52,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:31:52,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520386113] [2020-04-18 11:31:52,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:52,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:52,791 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:52,792 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:52,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:31:52,795 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:52,817 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:52,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:52,819 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:31:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:52,967 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:31:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:31:52,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:52,968 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [691313144] [2020-04-18 11:31:52,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:52,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:52,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [691313144] [2020-04-18 11:31:52,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:52,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:52,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:52,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:52,971 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 11 states. [2020-04-18 11:31:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:53,306 INFO L93 Difference]: Finished difference Result 5101 states and 16214 transitions. [2020-04-18 11:31:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:53,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:31:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:53,354 INFO L225 Difference]: With dead ends: 5101 [2020-04-18 11:31:53,355 INFO L226 Difference]: Without dead ends: 5080 [2020-04-18 11:31:53,355 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5080 states. [2020-04-18 11:31:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5080 to 2035. [2020-04-18 11:31:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-04-18 11:31:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-04-18 11:31:53,489 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-04-18 11:31:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:53,491 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-04-18 11:31:53,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-04-18 11:31:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:53,492 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:53,493 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:53,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:53,698 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-04-18 11:31:53,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:53,699 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1891682834] [2020-04-18 11:31:53,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:53,701 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:31:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:31:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:53,702 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1378740238, now seen corresponding path program 2 times [2020-04-18 11:31:53,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:53,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737007564] [2020-04-18 11:31:53,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:53,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737007564] [2020-04-18 11:31:53,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:53,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:53,728 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:53,729 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:53,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:31:53,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:53,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:53,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:53,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:53,736 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:31:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:53,739 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:31:53,739 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 3 times [2020-04-18 11:31:53,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:53,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758930557] [2020-04-18 11:31:53,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:53,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758930557] [2020-04-18 11:31:53,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:53,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:31:53,773 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:53,774 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:53,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:31:53,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:53,785 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:53,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:53,785 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:31:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:53,802 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:31:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:31:53,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:53,802 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1891682834] [2020-04-18 11:31:53,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:53,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:31:53,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1891682834] [2020-04-18 11:31:53,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:31:53,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:53,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:53,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:53,804 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-04-18 11:31:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:53,872 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-04-18 11:31:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:31:53,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:31:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:53,885 INFO L225 Difference]: With dead ends: 3265 [2020-04-18 11:31:53,885 INFO L226 Difference]: Without dead ends: 3250 [2020-04-18 11:31:53,887 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:31:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-04-18 11:31:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-04-18 11:31:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-04-18 11:31:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-04-18 11:31:53,982 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-04-18 11:31:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:53,983 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-04-18 11:31:53,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:31:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-04-18 11:31:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:53,985 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:53,985 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:53,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-04-18 11:31:53,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:53,986 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [513754413] [2020-04-18 11:31:53,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:53,988 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 151 transitions. [2020-04-18 11:31:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:31:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:53,989 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:53,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1222685441, now seen corresponding path program 2 times [2020-04-18 11:31:53,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:53,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984887478] [2020-04-18 11:31:53,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:54,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984887478] [2020-04-18 11:31:54,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:54,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:54,014 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:54,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:54,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 101 transitions. [2020-04-18 11:31:54,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:54,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:54,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:54,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:54,026 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:31:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:54,033 INFO L93 Difference]: Finished difference Result 89 states and 163 transitions. [2020-04-18 11:31:54,033 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 163 transitions. [2020-04-18 11:31:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:54,034 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:54,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:54,034 INFO L82 PathProgramCache]: Analyzing trace with hash -320724009, now seen corresponding path program 3 times [2020-04-18 11:31:54,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:54,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669810306] [2020-04-18 11:31:54,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:54,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669810306] [2020-04-18 11:31:54,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:54,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:54,067 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:54,068 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:54,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 69 transitions. [2020-04-18 11:31:54,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:54,082 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:54,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:54,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:54,083 INFO L87 Difference]: Start difference. First operand 89 states and 163 transitions. Second operand 5 states. [2020-04-18 11:31:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:54,114 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-04-18 11:31:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-04-18 11:31:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:54,115 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 4 times [2020-04-18 11:31:54,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:54,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533670177] [2020-04-18 11:31:54,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:54,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533670177] [2020-04-18 11:31:54,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51407199] [2020-04-18 11:31:54,156 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:54,229 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:54,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:54,230 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:54,231 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:54,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:54,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:54,269 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:54,271 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:54,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-04-18 11:31:54,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:54,300 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:54,301 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 9 states. [2020-04-18 11:31:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:54,388 INFO L93 Difference]: Finished difference Result 97 states and 168 transitions. [2020-04-18 11:31:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 168 transitions. [2020-04-18 11:31:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:54,389 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 5 times [2020-04-18 11:31:54,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:54,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666256727] [2020-04-18 11:31:54,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:54,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666256727] [2020-04-18 11:31:54,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:54,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:54,443 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:54,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:54,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:31:54,449 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:54,468 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:54,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:54,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:54,469 INFO L87 Difference]: Start difference. First operand 97 states and 168 transitions. Second operand 7 states. [2020-04-18 11:31:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:54,612 INFO L93 Difference]: Finished difference Result 100 states and 171 transitions. [2020-04-18 11:31:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 171 transitions. [2020-04-18 11:31:54,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:54,613 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [513754413] [2020-04-18 11:31:54,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:54,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:54,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [513754413] [2020-04-18 11:31:54,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:54,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:54,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:54,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:54,615 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 11 states. [2020-04-18 11:31:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:54,860 INFO L93 Difference]: Finished difference Result 5387 states and 17317 transitions. [2020-04-18 11:31:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:54,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 11:31:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:54,878 INFO L225 Difference]: With dead ends: 5387 [2020-04-18 11:31:54,879 INFO L226 Difference]: Without dead ends: 5358 [2020-04-18 11:31:54,879 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2020-04-18 11:31:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 2153. [2020-04-18 11:31:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-04-18 11:31:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 8255 transitions. [2020-04-18 11:31:54,992 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 8255 transitions. Word has length 19 [2020-04-18 11:31:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:54,992 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 8255 transitions. [2020-04-18 11:31:54,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 8255 transitions. [2020-04-18 11:31:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:54,994 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:54,994 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:55,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:55,205 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-04-18 11:31:55,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:55,206 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1583945560] [2020-04-18 11:31:55,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:55,210 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:31:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:31:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:55,211 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:55,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1006426907, now seen corresponding path program 2 times [2020-04-18 11:31:55,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:55,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603929511] [2020-04-18 11:31:55,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:55,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603929511] [2020-04-18 11:31:55,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:55,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:55,230 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:55,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:55,235 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 73 transitions. [2020-04-18 11:31:55,235 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:55,238 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:55,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:55,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:55,239 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:31:55,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:55,246 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2020-04-18 11:31:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-04-18 11:31:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:55,247 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 764819305, now seen corresponding path program 3 times [2020-04-18 11:31:55,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:55,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151121670] [2020-04-18 11:31:55,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:55,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151121670] [2020-04-18 11:31:55,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:55,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:55,289 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:55,291 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:55,294 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 45 transitions. [2020-04-18 11:31:55,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:55,303 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:55,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:55,304 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 5 states. [2020-04-18 11:31:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:55,337 INFO L93 Difference]: Finished difference Result 76 states and 124 transitions. [2020-04-18 11:31:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 124 transitions. [2020-04-18 11:31:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:55,337 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:55,338 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 4 times [2020-04-18 11:31:55,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:55,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474177930] [2020-04-18 11:31:55,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:55,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474177930] [2020-04-18 11:31:55,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763740212] [2020-04-18 11:31:55,392 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:55,463 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:55,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:55,465 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:55,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:55,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:55,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:31:55,497 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:55,498 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:55,501 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-04-18 11:31:55,502 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:55,529 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:55,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:55,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:55,530 INFO L87 Difference]: Start difference. First operand 76 states and 124 transitions. Second operand 9 states. [2020-04-18 11:31:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:55,620 INFO L93 Difference]: Finished difference Result 77 states and 124 transitions. [2020-04-18 11:31:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 124 transitions. [2020-04-18 11:31:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:31:55,620 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 5 times [2020-04-18 11:31:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:55,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018697966] [2020-04-18 11:31:55,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:55,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018697966] [2020-04-18 11:31:55,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:55,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:55,707 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:55,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:55,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:31:55,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:55,730 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:55,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:55,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:31:55,731 INFO L87 Difference]: Start difference. First operand 77 states and 124 transitions. Second operand 7 states. [2020-04-18 11:31:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:55,838 INFO L93 Difference]: Finished difference Result 80 states and 127 transitions. [2020-04-18 11:31:55,838 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 127 transitions. [2020-04-18 11:31:55,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:55,839 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1583945560] [2020-04-18 11:31:55,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:55,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:55,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1583945560] [2020-04-18 11:31:55,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:31:55,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:55,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:55,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:31:55,841 INFO L87 Difference]: Start difference. First operand 2153 states and 8255 transitions. Second operand 11 states. [2020-04-18 11:31:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:56,059 INFO L93 Difference]: Finished difference Result 5272 states and 17008 transitions. [2020-04-18 11:31:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:31:56,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 11:31:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:56,077 INFO L225 Difference]: With dead ends: 5272 [2020-04-18 11:31:56,077 INFO L226 Difference]: Without dead ends: 5238 [2020-04-18 11:31:56,078 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:31:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2020-04-18 11:31:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 2150. [2020-04-18 11:31:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-04-18 11:31:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-04-18 11:31:56,265 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-04-18 11:31:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:56,266 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-04-18 11:31:56,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:31:56,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-04-18 11:31:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:56,268 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:56,268 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:56,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:56,476 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:31:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,476 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-04-18 11:31:56,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:56,476 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [789551216] [2020-04-18 11:31:56,477 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:56,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 405 transitions. [2020-04-18 11:31:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-04-18 11:31:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:56,480 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1305538154, now seen corresponding path program 2 times [2020-04-18 11:31:56,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:56,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297840973] [2020-04-18 11:31:56,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:31:56,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297840973] [2020-04-18 11:31:56,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:56,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:31:56,495 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:56,497 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:56,504 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 119 transitions. [2020-04-18 11:31:56,504 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:56,507 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:56,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:56,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:56,508 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-04-18 11:31:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:56,518 INFO L93 Difference]: Finished difference Result 203 states and 475 transitions. [2020-04-18 11:31:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 475 transitions. [2020-04-18 11:31:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:56,519 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2103995794, now seen corresponding path program 3 times [2020-04-18 11:31:56,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:56,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155039897] [2020-04-18 11:31:56,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:56,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155039897] [2020-04-18 11:31:56,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:56,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:31:56,544 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:56,545 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:56,552 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 99 transitions. [2020-04-18 11:31:56,552 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:56,561 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:31:56,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:31:56,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:31:56,562 INFO L87 Difference]: Start difference. First operand 203 states and 475 transitions. Second operand 5 states. [2020-04-18 11:31:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:56,620 INFO L93 Difference]: Finished difference Result 266 states and 576 transitions. [2020-04-18 11:31:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 576 transitions. [2020-04-18 11:31:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:56,621 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:31:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,621 INFO L82 PathProgramCache]: Analyzing trace with hash 887137816, now seen corresponding path program 4 times [2020-04-18 11:31:56,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:56,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446863264] [2020-04-18 11:31:56,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:56,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446863264] [2020-04-18 11:31:56,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125632058] [2020-04-18 11:31:56,659 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:56,725 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:31:56,726 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:56,726 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:31:56,728 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:56,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:56,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:31:56,751 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:56,752 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:56,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 79 transitions. [2020-04-18 11:31:56,759 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:56,786 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:56,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:56,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:31:56,787 INFO L87 Difference]: Start difference. First operand 266 states and 576 transitions. Second operand 9 states. [2020-04-18 11:31:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:56,978 INFO L93 Difference]: Finished difference Result 312 states and 632 transitions. [2020-04-18 11:31:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 632 transitions. [2020-04-18 11:31:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:56,980 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:31:56,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 5 times [2020-04-18 11:31:56,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:56,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236859284] [2020-04-18 11:31:56,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:57,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236859284] [2020-04-18 11:31:57,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822725435] [2020-04-18 11:31:57,041 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:57,117 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:31:57,117 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:57,118 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:57,120 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:31:57,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:57,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:57,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:57,143 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:57,152 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-04-18 11:31:57,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:57,171 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:31:57,172 INFO L87 Difference]: Start difference. First operand 312 states and 632 transitions. Second operand 11 states. [2020-04-18 11:31:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:57,635 INFO L93 Difference]: Finished difference Result 329 states and 643 transitions. [2020-04-18 11:31:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 643 transitions. [2020-04-18 11:31:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:57,637 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:31:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 6 times [2020-04-18 11:31:57,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:57,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832012227] [2020-04-18 11:31:57,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:57,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832012227] [2020-04-18 11:31:57,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238903260] [2020-04-18 11:31:57,701 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:57,770 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-18 11:31:57,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:57,772 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:57,773 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:57,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:57,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:57,794 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:57,796 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:57,802 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:31:57,803 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:57,830 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:57,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:57,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:31:57,831 INFO L87 Difference]: Start difference. First operand 329 states and 643 transitions. Second operand 11 states. [2020-04-18 11:31:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:58,439 INFO L93 Difference]: Finished difference Result 358 states and 677 transitions. [2020-04-18 11:31:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 677 transitions. [2020-04-18 11:31:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:58,440 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:31:58,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1077008290, now seen corresponding path program 7 times [2020-04-18 11:31:58,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:58,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904150213] [2020-04-18 11:31:58,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:58,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904150213] [2020-04-18 11:31:58,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:58,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:31:58,485 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:58,487 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 63 transitions. [2020-04-18 11:31:58,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:58,523 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:31:58,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:31:58,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=644, Invalid=2436, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 11:31:58,524 INFO L87 Difference]: Start difference. First operand 358 states and 677 transitions. Second operand 7 states. [2020-04-18 11:31:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:58,764 INFO L93 Difference]: Finished difference Result 403 states and 735 transitions. [2020-04-18 11:31:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 735 transitions. [2020-04-18 11:31:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:58,765 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:31:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,766 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 8 times [2020-04-18 11:31:58,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:58,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928443329] [2020-04-18 11:31:58,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:58,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928443329] [2020-04-18 11:31:58,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776798028] [2020-04-18 11:31:58,821 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:58,911 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:31:58,911 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:58,912 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:58,913 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:58,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:58,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:58,942 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:58,944 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:31:58,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:58,974 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:31:58,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:58,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=3386, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 11:31:58,976 INFO L87 Difference]: Start difference. First operand 403 states and 735 transitions. Second operand 11 states. [2020-04-18 11:31:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:59,421 INFO L93 Difference]: Finished difference Result 406 states and 736 transitions. [2020-04-18 11:31:59,422 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 736 transitions. [2020-04-18 11:31:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:31:59,423 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:31:59,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:59,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 9 times [2020-04-18 11:31:59,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:59,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443778528] [2020-04-18 11:31:59,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:59,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443778528] [2020-04-18 11:31:59,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033249459] [2020-04-18 11:31:59,504 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:31:59,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:31:59,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:31:59,579 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:31:59,580 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:31:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:31:59,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:31:59,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:31:59,600 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:59,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:59,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-04-18 11:31:59,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:59,624 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:31:59,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:31:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=4925, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 11:31:59,626 INFO L87 Difference]: Start difference. First operand 406 states and 736 transitions. Second operand 11 states. [2020-04-18 11:32:00,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:00,164 INFO L93 Difference]: Finished difference Result 441 states and 773 transitions. [2020-04-18 11:32:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 773 transitions. [2020-04-18 11:32:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:00,165 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:32:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:00,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 10 times [2020-04-18 11:32:00,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:00,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958473954] [2020-04-18 11:32:00,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:00,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958473954] [2020-04-18 11:32:00,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:00,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:00,234 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:00,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:00,238 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:32:00,238 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:00,254 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1516, Invalid=7604, Unknown=0, NotChecked=0, Total=9120 [2020-04-18 11:32:00,257 INFO L87 Difference]: Start difference. First operand 441 states and 773 transitions. Second operand 9 states. [2020-04-18 11:32:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:00,851 INFO L93 Difference]: Finished difference Result 441 states and 773 transitions. [2020-04-18 11:32:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 773 transitions. [2020-04-18 11:32:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:00,852 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:32:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 11 times [2020-04-18 11:32:00,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:00,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972171154] [2020-04-18 11:32:00,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:00,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972171154] [2020-04-18 11:32:00,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:00,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:00,909 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:00,911 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:00,914 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:32:00,914 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:00,915 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:00,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:00,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1930, Invalid=10726, Unknown=0, NotChecked=0, Total=12656 [2020-04-18 11:32:00,918 INFO L87 Difference]: Start difference. First operand 441 states and 773 transitions. Second operand 9 states. [2020-04-18 11:32:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:01,427 INFO L93 Difference]: Finished difference Result 441 states and 773 transitions. [2020-04-18 11:32:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 773 transitions. [2020-04-18 11:32:01,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:01,428 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [789551216] [2020-04-18 11:32:01,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:01,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:32:01,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [789551216] [2020-04-18 11:32:01,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 11:32:01,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 11:32:01,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2359, Invalid=13897, Unknown=0, NotChecked=0, Total=16256 [2020-04-18 11:32:01,433 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 18 states. [2020-04-18 11:32:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:02,917 INFO L93 Difference]: Finished difference Result 8475 states and 24418 transitions. [2020-04-18 11:32:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-04-18 11:32:02,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-04-18 11:32:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:02,951 INFO L225 Difference]: With dead ends: 8475 [2020-04-18 11:32:02,952 INFO L226 Difference]: Without dead ends: 8417 [2020-04-18 11:32:02,957 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11609 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4181, Invalid=23875, Unknown=0, NotChecked=0, Total=28056 [2020-04-18 11:32:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2020-04-18 11:32:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 1800. [2020-04-18 11:32:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-04-18 11:32:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-04-18 11:32:03,106 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-04-18 11:32:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:03,107 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-04-18 11:32:03,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 11:32:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-04-18 11:32:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:03,109 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:03,109 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:04,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:04,115 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:32:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,116 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-04-18 11:32:04,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:04,117 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [677047061] [2020-04-18 11:32:04,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,119 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-04-18 11:32:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 11:32:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:04,120 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,120 INFO L82 PathProgramCache]: Analyzing trace with hash 603296645, now seen corresponding path program 2 times [2020-04-18 11:32:04,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:04,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399704045] [2020-04-18 11:32:04,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:04,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399704045] [2020-04-18 11:32:04,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:04,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:04,145 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:04,146 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:32:04,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:04,155 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:04,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:04,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:04,156 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-04-18 11:32:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:04,159 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:32:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:32:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:04,160 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,160 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 3 times [2020-04-18 11:32:04,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:04,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10763004] [2020-04-18 11:32:04,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:04,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10763004] [2020-04-18 11:32:04,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:04,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:04,189 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:04,190 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,193 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:32:04,193 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:04,202 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:04,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:04,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:04,203 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 5 states. [2020-04-18 11:32:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:04,219 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:32:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:32:04,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:04,220 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [677047061] [2020-04-18 11:32:04,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:04,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:04,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [677047061] [2020-04-18 11:32:04,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:04,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:04,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:04,221 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-04-18 11:32:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:04,291 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-04-18 11:32:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:04,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:32:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:04,300 INFO L225 Difference]: With dead ends: 2762 [2020-04-18 11:32:04,300 INFO L226 Difference]: Without dead ends: 2746 [2020-04-18 11:32:04,302 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-04-18 11:32:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-04-18 11:32:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-04-18 11:32:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-04-18 11:32:04,375 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-04-18 11:32:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:04,375 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-04-18 11:32:04,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-04-18 11:32:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:32:04,378 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:04,378 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:04,378 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:32:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,378 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-04-18 11:32:04,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:04,379 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1312584843] [2020-04-18 11:32:04,379 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:04,380 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 11:32:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 11:32:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 11:32:04,381 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 2 times [2020-04-18 11:32:04,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:04,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246098304] [2020-04-18 11:32:04,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:32:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:32:04,430 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:32:04,431 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:32:04,431 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:32:04,432 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:32:04,432 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 11:32:04,449 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,449 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,449 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,449 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,449 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,449 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,450 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,451 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,452 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,453 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,454 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,455 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,456 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,457 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,458 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,458 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,459 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,459 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,459 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,460 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,461 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,462 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,463 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,463 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,464 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,465 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,465 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,465 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,465 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,466 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,466 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,466 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,466 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,467 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,468 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,468 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,468 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,468 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,469 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,469 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,470 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,470 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,470 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,471 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,471 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,472 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,472 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,472 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,474 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,474 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,474 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,476 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,476 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,477 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,477 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,478 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,479 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,479 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,481 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,481 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,481 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,481 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,483 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,483 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,483 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,483 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,483 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,484 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,485 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,485 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,485 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,485 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,485 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,485 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:32:04,487 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 11:32:04,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:32:04,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:32:04,487 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:32:04,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:32:04,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:32:04,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:32:04,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:32:04,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:32:04,491 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-04-18 11:32:04,491 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-04-18 11:32:04,516 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-04-18 11:32:04,516 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 11:32:04,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-04-18 11:32:04,522 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-04-18 11:32:04,541 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-04-18 11:32:04,541 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 11:32:04,543 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-04-18 11:32:04,548 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-04-18 11:32:04,548 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:32:06,527 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-18 11:32:06,617 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-04-18 11:32:06,617 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-04-18 11:32:06,618 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-04-18 11:32:07,044 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-04-18 11:32:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-04-18 11:32:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:32:07,044 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:07,044 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:32:07,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-04-18 11:32:07,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:07,045 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1778631850] [2020-04-18 11:32:07,046 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:32:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:32:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:32:07,046 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 2 times [2020-04-18 11:32:07,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24726686] [2020-04-18 11:32:07,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,059 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 11:32:07,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24726686] [2020-04-18 11:32:07,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:07,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:32:07,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,060 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,061 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:32:07,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:07,067 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:07,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:07,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:07,067 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:32:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,067 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:32:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:32:07,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:07,068 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1778631850] [2020-04-18 11:32:07,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:07,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:32:07,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1778631850] [2020-04-18 11:32:07,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:32:07,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:07,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:07,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:07,069 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-04-18 11:32:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,127 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-04-18 11:32:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:32:07,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:32:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:07,141 INFO L225 Difference]: With dead ends: 5844 [2020-04-18 11:32:07,141 INFO L226 Difference]: Without dead ends: 5479 [2020-04-18 11:32:07,141 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-04-18 11:32:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-04-18 11:32:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-04-18 11:32:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-04-18 11:32:07,354 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-04-18 11:32:07,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:07,354 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-04-18 11:32:07,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:32:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-04-18 11:32:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:32:07,354 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:07,354 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:07,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-04-18 11:32:07,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:07,355 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [824971341] [2020-04-18 11:32:07,356 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,356 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:32:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:32:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:32:07,357 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1529479740, now seen corresponding path program 2 times [2020-04-18 11:32:07,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217037403] [2020-04-18 11:32:07,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,369 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 11:32:07,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217037403] [2020-04-18 11:32:07,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:07,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:07,370 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,371 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,372 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:32:07,372 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:07,377 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:07,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:07,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:07,378 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:32:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,382 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:32:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:32:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:32:07,382 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:07,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 3 times [2020-04-18 11:32:07,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914954552] [2020-04-18 11:32:07,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,405 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 11:32:07,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914954552] [2020-04-18 11:32:07,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:07,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:07,406 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,406 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,407 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:32:07,407 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:07,415 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:07,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:07,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:07,415 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:32:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,430 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:32:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:32:07,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:07,431 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [824971341] [2020-04-18 11:32:07,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:07,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:07,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [824971341] [2020-04-18 11:32:07,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:07,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:07,432 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-04-18 11:32:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,535 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-04-18 11:32:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:07,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:32:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:07,576 INFO L225 Difference]: With dead ends: 9673 [2020-04-18 11:32:07,577 INFO L226 Difference]: Without dead ends: 9666 [2020-04-18 11:32:07,578 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-04-18 11:32:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-04-18 11:32:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-04-18 11:32:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-04-18 11:32:07,897 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-04-18 11:32:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:07,897 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-04-18 11:32:07,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-04-18 11:32:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:32:07,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:07,899 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:07,899 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-04-18 11:32:07,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:07,900 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [665288221] [2020-04-18 11:32:07,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,902 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:32:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:32:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:32:07,903 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,904 INFO L82 PathProgramCache]: Analyzing trace with hash -372579188, now seen corresponding path program 2 times [2020-04-18 11:32:07,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179435688] [2020-04-18 11:32:07,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:07,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179435688] [2020-04-18 11:32:07,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:07,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:07,936 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,938 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:32:07,941 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:07,945 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:07,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:07,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:07,946 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:32:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:07,950 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:32:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:32:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:32:07,951 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 3 times [2020-04-18 11:32:07,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:07,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386982534] [2020-04-18 11:32:07,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:07,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386982534] [2020-04-18 11:32:07,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:07,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:07,997 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:07,998 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:07,999 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:32:08,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:08,011 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:08,012 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:32:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:08,035 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:32:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:32:08,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:08,036 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [665288221] [2020-04-18 11:32:08,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:08,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:08,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [665288221] [2020-04-18 11:32:08,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:08,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:08,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:08,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:08,037 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-04-18 11:32:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:08,276 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-04-18 11:32:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:08,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:32:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:08,302 INFO L225 Difference]: With dead ends: 11081 [2020-04-18 11:32:08,302 INFO L226 Difference]: Without dead ends: 11068 [2020-04-18 11:32:08,303 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-04-18 11:32:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-04-18 11:32:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-04-18 11:32:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-04-18 11:32:08,668 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-04-18 11:32:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:08,668 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-04-18 11:32:08,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-04-18 11:32:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:08,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:08,672 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:08,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-04-18 11:32:08,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:08,673 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [252516082] [2020-04-18 11:32:08,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:08,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:32:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:32:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:08,675 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:08,676 INFO L82 PathProgramCache]: Analyzing trace with hash 975024175, now seen corresponding path program 2 times [2020-04-18 11:32:08,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:08,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388758315] [2020-04-18 11:32:08,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:08,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388758315] [2020-04-18 11:32:08,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:08,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:08,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:08,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:08,701 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:32:08,701 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:08,706 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:08,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:08,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:08,707 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:32:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:08,713 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:32:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:32:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:08,714 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:08,715 INFO L82 PathProgramCache]: Analyzing trace with hash 208643679, now seen corresponding path program 3 times [2020-04-18 11:32:08,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:08,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915921518] [2020-04-18 11:32:08,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:08,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915921518] [2020-04-18 11:32:08,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:08,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:08,745 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:08,747 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:08,750 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:32:08,751 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:08,760 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:08,761 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 5 states. [2020-04-18 11:32:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:08,793 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:32:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:32:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:08,793 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 4 times [2020-04-18 11:32:08,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:08,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488939371] [2020-04-18 11:32:08,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:08,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488939371] [2020-04-18 11:32:08,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356841490] [2020-04-18 11:32:08,837 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:08,934 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:08,934 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:08,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:08,937 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:08,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:08,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:08,956 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:08,957 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:08,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:32:08,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:08,987 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:08,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:08,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:08,988 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 9 states. [2020-04-18 11:32:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:09,084 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:32:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:32:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:32:09,085 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:09,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 5 times [2020-04-18 11:32:09,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:09,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670762602] [2020-04-18 11:32:09,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:09,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670762602] [2020-04-18 11:32:09,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:09,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:09,126 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:09,127 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:09,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:32:09,129 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:09,145 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:09,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:09,146 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:32:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:09,234 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:32:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:32:09,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:09,235 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [252516082] [2020-04-18 11:32:09,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:09,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:09,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [252516082] [2020-04-18 11:32:09,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:32:09,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:09,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:32:09,236 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 11 states. [2020-04-18 11:32:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:09,553 INFO L93 Difference]: Finished difference Result 19072 states and 73298 transitions. [2020-04-18 11:32:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:32:09,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:32:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:09,608 INFO L225 Difference]: With dead ends: 19072 [2020-04-18 11:32:09,609 INFO L226 Difference]: Without dead ends: 19045 [2020-04-18 11:32:09,609 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:32:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19045 states. [2020-04-18 11:32:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19045 to 7048. [2020-04-18 11:32:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-04-18 11:32:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-04-18 11:32:10,808 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-04-18 11:32:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:10,808 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-04-18 11:32:10,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:32:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-04-18 11:32:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:32:10,809 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:10,809 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:11,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:11,010 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-04-18 11:32:11,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:11,011 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2094498262] [2020-04-18 11:32:11,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,012 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:32:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:32:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:32:11,013 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:11,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1671417013, now seen corresponding path program 2 times [2020-04-18 11:32:11,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:11,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248123587] [2020-04-18 11:32:11,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:11,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248123587] [2020-04-18 11:32:11,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:11,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:11,029 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:11,030 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,032 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:32:11,033 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:11,035 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:11,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:11,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:11,036 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:32:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:11,038 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:32:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:32:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:32:11,039 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 3 times [2020-04-18 11:32:11,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:11,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522667937] [2020-04-18 11:32:11,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:11,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522667937] [2020-04-18 11:32:11,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:11,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:11,071 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:11,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:32:11,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:11,082 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:11,083 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:32:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:11,098 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:32:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:32:11,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:11,098 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2094498262] [2020-04-18 11:32:11,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:11,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:11,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2094498262] [2020-04-18 11:32:11,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:11,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:11,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:11,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:11,100 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-04-18 11:32:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:11,251 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-04-18 11:32:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:11,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:32:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:11,292 INFO L225 Difference]: With dead ends: 12234 [2020-04-18 11:32:11,292 INFO L226 Difference]: Without dead ends: 12212 [2020-04-18 11:32:11,292 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-04-18 11:32:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-04-18 11:32:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-04-18 11:32:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-04-18 11:32:11,549 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-04-18 11:32:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:11,549 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-04-18 11:32:11,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-04-18 11:32:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:11,550 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:11,550 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:11,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,550 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-04-18 11:32:11,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:11,550 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1681600201] [2020-04-18 11:32:11,551 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,552 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 151 transitions. [2020-04-18 11:32:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:32:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:11,552 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1888358104, now seen corresponding path program 2 times [2020-04-18 11:32:11,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:11,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841503515] [2020-04-18 11:32:11,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:11,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841503515] [2020-04-18 11:32:11,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:11,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:11,565 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:11,567 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 101 transitions. [2020-04-18 11:32:11,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:11,575 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:11,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:11,576 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:32:11,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:11,582 INFO L93 Difference]: Finished difference Result 89 states and 163 transitions. [2020-04-18 11:32:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 163 transitions. [2020-04-18 11:32:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:11,583 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1067019528, now seen corresponding path program 3 times [2020-04-18 11:32:11,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:11,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500527120] [2020-04-18 11:32:11,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:11,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500527120] [2020-04-18 11:32:11,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:11,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:11,605 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:11,607 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 69 transitions. [2020-04-18 11:32:11,612 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:11,621 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:11,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:11,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:11,621 INFO L87 Difference]: Start difference. First operand 89 states and 163 transitions. Second operand 5 states. [2020-04-18 11:32:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:11,652 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-04-18 11:32:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-04-18 11:32:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:11,653 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:11,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,653 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 4 times [2020-04-18 11:32:11,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:11,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106964711] [2020-04-18 11:32:11,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:11,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106964711] [2020-04-18 11:32:11,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413304247] [2020-04-18 11:32:11,693 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:11,772 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:11,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:11,774 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:11,784 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:11,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:11,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:11,802 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:11,803 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-04-18 11:32:11,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:11,834 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:11,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:11,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:11,834 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 9 states. [2020-04-18 11:32:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:11,920 INFO L93 Difference]: Finished difference Result 97 states and 168 transitions. [2020-04-18 11:32:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 168 transitions. [2020-04-18 11:32:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:11,920 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:11,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 5 times [2020-04-18 11:32:11,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:11,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239605957] [2020-04-18 11:32:11,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:11,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239605957] [2020-04-18 11:32:11,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:11,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:11,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:11,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:11,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:32:11,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:11,989 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:11,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:11,990 INFO L87 Difference]: Start difference. First operand 97 states and 168 transitions. Second operand 7 states. [2020-04-18 11:32:12,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:12,087 INFO L93 Difference]: Finished difference Result 100 states and 171 transitions. [2020-04-18 11:32:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 171 transitions. [2020-04-18 11:32:12,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:12,088 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1681600201] [2020-04-18 11:32:12,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:12,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:12,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1681600201] [2020-04-18 11:32:12,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:32:12,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:12,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:32:12,089 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 11 states. [2020-04-18 11:32:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:12,634 INFO L93 Difference]: Finished difference Result 21543 states and 84183 transitions. [2020-04-18 11:32:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:32:12,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-04-18 11:32:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:12,685 INFO L225 Difference]: With dead ends: 21543 [2020-04-18 11:32:12,685 INFO L226 Difference]: Without dead ends: 21500 [2020-04-18 11:32:12,686 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:32:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21500 states. [2020-04-18 11:32:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21500 to 8129. [2020-04-18 11:32:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-04-18 11:32:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-04-18 11:32:13,021 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-04-18 11:32:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:13,021 INFO L479 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-04-18 11:32:13,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:32:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-04-18 11:32:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:13,022 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:13,022 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:13,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:13,226 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:13,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:13,226 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-04-18 11:32:13,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:13,227 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1708370724] [2020-04-18 11:32:13,228 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:13,230 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:32:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:32:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:13,231 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:13,231 INFO L82 PathProgramCache]: Analyzing trace with hash 496442822, now seen corresponding path program 2 times [2020-04-18 11:32:13,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:13,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682704548] [2020-04-18 11:32:13,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:13,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682704548] [2020-04-18 11:32:13,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:13,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:13,247 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:13,249 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:13,253 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 74 transitions. [2020-04-18 11:32:13,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:13,256 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:13,257 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:32:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:13,264 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2020-04-18 11:32:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-04-18 11:32:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:13,265 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -273739378, now seen corresponding path program 3 times [2020-04-18 11:32:13,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:13,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906354129] [2020-04-18 11:32:13,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:13,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906354129] [2020-04-18 11:32:13,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096854817] [2020-04-18 11:32:13,289 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:13,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:32:13,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:13,380 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:13,381 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:13,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:13,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:32:13,397 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:13,399 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:13,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2020-04-18 11:32:13,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:13,423 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:13,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:13,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:13,424 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 7 states. [2020-04-18 11:32:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:13,465 INFO L93 Difference]: Finished difference Result 76 states and 124 transitions. [2020-04-18 11:32:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 124 transitions. [2020-04-18 11:32:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:13,465 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash -273739918, now seen corresponding path program 4 times [2020-04-18 11:32:13,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:13,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236398193] [2020-04-18 11:32:13,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:13,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236398193] [2020-04-18 11:32:13,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:13,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:13,491 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:13,493 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:13,497 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2020-04-18 11:32:13,497 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:13,505 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:13,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:13,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:32:13,506 INFO L87 Difference]: Start difference. First operand 76 states and 124 transitions. Second operand 5 states. [2020-04-18 11:32:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:13,536 INFO L93 Difference]: Finished difference Result 83 states and 128 transitions. [2020-04-18 11:32:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2020-04-18 11:32:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:13,536 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 5 times [2020-04-18 11:32:13,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:13,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565597759] [2020-04-18 11:32:13,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:13,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565597759] [2020-04-18 11:32:13,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680518943] [2020-04-18 11:32:13,579 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:13,683 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:32:13,684 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:13,685 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:13,686 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:13,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:13,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:13,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:13,716 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:13,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-04-18 11:32:13,722 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:13,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:13,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:13,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:32:13,773 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand 11 states. [2020-04-18 11:32:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:13,906 INFO L93 Difference]: Finished difference Result 83 states and 128 transitions. [2020-04-18 11:32:13,906 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2020-04-18 11:32:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:32:13,907 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:13,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 6 times [2020-04-18 11:32:13,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:13,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199823482] [2020-04-18 11:32:13,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:13,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199823482] [2020-04-18 11:32:13,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:13,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:13,953 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:13,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:13,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:32:13,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:13,968 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:13,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:13,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:32:13,968 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand 7 states. [2020-04-18 11:32:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:14,052 INFO L93 Difference]: Finished difference Result 83 states and 128 transitions. [2020-04-18 11:32:14,052 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2020-04-18 11:32:14,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:14,053 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1708370724] [2020-04-18 11:32:14,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:14,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:14,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1708370724] [2020-04-18 11:32:14,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:32:14,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:14,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:14,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:32:14,055 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 13 states. [2020-04-18 11:32:14,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:14,808 INFO L93 Difference]: Finished difference Result 23663 states and 90455 transitions. [2020-04-18 11:32:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:32:14,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-04-18 11:32:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:14,867 INFO L225 Difference]: With dead ends: 23663 [2020-04-18 11:32:14,867 INFO L226 Difference]: Without dead ends: 23589 [2020-04-18 11:32:14,867 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:32:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23589 states. [2020-04-18 11:32:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23589 to 8317. [2020-04-18 11:32:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-04-18 11:32:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-04-18 11:32:15,224 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-04-18 11:32:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:15,224 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-04-18 11:32:15,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:32:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-04-18 11:32:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:15,225 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:15,225 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:15,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:15,629 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-04-18 11:32:15,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:15,630 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1320856642] [2020-04-18 11:32:15,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:15,635 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 405 transitions. [2020-04-18 11:32:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-04-18 11:32:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:15,636 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:15,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:15,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1963684983, now seen corresponding path program 2 times [2020-04-18 11:32:15,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:15,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295546366] [2020-04-18 11:32:15,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:15,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295546366] [2020-04-18 11:32:15,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:15,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:15,650 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:15,651 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:15,659 INFO L259 McrAutomatonBuilder]: Finished intersection with 65 states and 115 transitions. [2020-04-18 11:32:15,660 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:15,663 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:15,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:15,664 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-04-18 11:32:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:15,673 INFO L93 Difference]: Finished difference Result 203 states and 475 transitions. [2020-04-18 11:32:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 475 transitions. [2020-04-18 11:32:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:15,674 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash -508954823, now seen corresponding path program 3 times [2020-04-18 11:32:15,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:15,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866986642] [2020-04-18 11:32:15,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:15,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866986642] [2020-04-18 11:32:15,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:15,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:15,701 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:15,702 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:15,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 100 transitions. [2020-04-18 11:32:15,710 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:15,719 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:15,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:15,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:15,719 INFO L87 Difference]: Start difference. First operand 203 states and 475 transitions. Second operand 5 states. [2020-04-18 11:32:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:15,767 INFO L93 Difference]: Finished difference Result 266 states and 576 transitions. [2020-04-18 11:32:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 576 transitions. [2020-04-18 11:32:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:15,768 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1556585781, now seen corresponding path program 4 times [2020-04-18 11:32:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:15,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512467670] [2020-04-18 11:32:15,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:15,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512467670] [2020-04-18 11:32:15,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338657979] [2020-04-18 11:32:15,807 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:15,887 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:15,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:15,888 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:15,889 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:15,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:15,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:32:15,912 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:15,914 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:15,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 66 transitions. [2020-04-18 11:32:15,922 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:15,944 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:15,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:15,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:15,945 INFO L87 Difference]: Start difference. First operand 266 states and 576 transitions. Second operand 9 states. [2020-04-18 11:32:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:16,163 INFO L93 Difference]: Finished difference Result 308 states and 628 transitions. [2020-04-18 11:32:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 628 transitions. [2020-04-18 11:32:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:16,164 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:16,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1556586801, now seen corresponding path program 5 times [2020-04-18 11:32:16,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:16,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769964986] [2020-04-18 11:32:16,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:16,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769964986] [2020-04-18 11:32:16,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730916724] [2020-04-18 11:32:16,240 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:16,321 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:32:16,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:16,322 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:16,324 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:16,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:16,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:16,341 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:16,343 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:16,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 66 transitions. [2020-04-18 11:32:16,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:16,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:16,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:16,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:16,361 INFO L87 Difference]: Start difference. First operand 308 states and 628 transitions. Second operand 9 states. [2020-04-18 11:32:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:16,567 INFO L93 Difference]: Finished difference Result 361 states and 682 transitions. [2020-04-18 11:32:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 682 transitions. [2020-04-18 11:32:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:16,568 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 6 times [2020-04-18 11:32:16,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:16,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987226194] [2020-04-18 11:32:16,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:16,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987226194] [2020-04-18 11:32:16,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906468812] [2020-04-18 11:32:16,626 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:16,702 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:32:16,703 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:16,704 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:16,705 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:32:16,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:16,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:16,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:16,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:16,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-04-18 11:32:16,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:16,809 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:16,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:32:16,810 INFO L87 Difference]: Start difference. First operand 361 states and 682 transitions. Second operand 13 states. [2020-04-18 11:32:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:17,351 INFO L93 Difference]: Finished difference Result 368 states and 687 transitions. [2020-04-18 11:32:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 687 transitions. [2020-04-18 11:32:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:17,352 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:32:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 7 times [2020-04-18 11:32:17,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:17,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128768736] [2020-04-18 11:32:17,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:17,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128768736] [2020-04-18 11:32:17,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815532372] [2020-04-18 11:32:17,404 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:17,499 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:17,500 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:17,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:17,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:17,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:17,530 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:17,536 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:32:17,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:17,549 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:17,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:17,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1371, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:32:17,550 INFO L87 Difference]: Start difference. First operand 368 states and 687 transitions. Second operand 11 states. [2020-04-18 11:32:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:18,363 INFO L93 Difference]: Finished difference Result 375 states and 692 transitions. [2020-04-18 11:32:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 692 transitions. [2020-04-18 11:32:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:18,364 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:32:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1056201999, now seen corresponding path program 8 times [2020-04-18 11:32:18,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:18,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268433190] [2020-04-18 11:32:18,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:18,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268433190] [2020-04-18 11:32:18,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:18,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:32:18,412 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:18,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:18,418 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 37 transitions. [2020-04-18 11:32:18,418 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:18,448 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:18,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:18,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 11:32:18,449 INFO L87 Difference]: Start difference. First operand 375 states and 692 transitions. Second operand 7 states. [2020-04-18 11:32:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:18,647 INFO L93 Difference]: Finished difference Result 411 states and 727 transitions. [2020-04-18 11:32:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 727 transitions. [2020-04-18 11:32:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:18,648 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:32:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:18,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1056741489, now seen corresponding path program 9 times [2020-04-18 11:32:18,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:18,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511337377] [2020-04-18 11:32:18,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:18,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511337377] [2020-04-18 11:32:18,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758654612] [2020-04-18 11:32:18,699 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:18,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:32:18,776 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:18,777 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:18,778 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:18,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:18,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:18,805 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:18,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:18,811 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 37 transitions. [2020-04-18 11:32:18,812 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:18,856 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:18,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3822, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 11:32:18,857 INFO L87 Difference]: Start difference. First operand 411 states and 727 transitions. Second operand 9 states. [2020-04-18 11:32:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:19,084 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:32:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:32:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:19,086 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:32:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 10 times [2020-04-18 11:32:19,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:19,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677363747] [2020-04-18 11:32:19,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:19,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677363747] [2020-04-18 11:32:19,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660311663] [2020-04-18 11:32:19,144 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:19,233 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:19,233 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:19,234 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:19,235 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:19,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:19,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:19,260 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:19,263 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:19,271 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:32:19,271 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:19,392 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:32:19,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:32:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5041, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 11:32:19,394 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 17 states. [2020-04-18 11:32:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:20,089 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:32:20,089 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:32:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:20,090 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:32:20,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:20,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 11 times [2020-04-18 11:32:20,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:20,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293987691] [2020-04-18 11:32:20,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:20,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293987691] [2020-04-18 11:32:20,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010306321] [2020-04-18 11:32:20,152 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:20,228 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:32:20,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:20,229 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:20,230 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:32:20,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:20,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:20,244 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:20,246 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:20,249 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-04-18 11:32:20,250 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:20,273 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:20,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=6887, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 11:32:20,275 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 13 states. [2020-04-18 11:32:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:20,916 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:32:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:32:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:20,917 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:32:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:20,917 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 12 times [2020-04-18 11:32:20,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:20,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763005184] [2020-04-18 11:32:20,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:20,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763005184] [2020-04-18 11:32:20,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:20,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:20,968 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:20,969 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:20,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:32:20,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:20,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:20,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:20,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1970, Invalid=9802, Unknown=0, NotChecked=0, Total=11772 [2020-04-18 11:32:20,973 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 9 states. [2020-04-18 11:32:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:21,378 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:32:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:32:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:21,379 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:32:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 13 times [2020-04-18 11:32:21,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:21,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679311033] [2020-04-18 11:32:21,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:32:21,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679311033] [2020-04-18 11:32:21,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:21,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:21,426 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:21,428 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:21,431 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:32:21,431 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:21,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:21,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:21,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2330, Invalid=12190, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 11:32:21,433 INFO L87 Difference]: Start difference. First operand 466 states and 792 transitions. Second operand 9 states. [2020-04-18 11:32:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:21,922 INFO L93 Difference]: Finished difference Result 466 states and 792 transitions. [2020-04-18 11:32:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 792 transitions. [2020-04-18 11:32:21,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:21,924 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1320856642] [2020-04-18 11:32:21,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:21,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:32:21,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1320856642] [2020-04-18 11:32:21,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:32:21,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:21,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:32:21,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2794, Invalid=15566, Unknown=0, NotChecked=0, Total=18360 [2020-04-18 11:32:21,926 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 24 states. [2020-04-18 11:32:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:26,400 INFO L93 Difference]: Finished difference Result 44264 states and 150047 transitions. [2020-04-18 11:32:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:32:26,401 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 21 [2020-04-18 11:32:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:27,538 INFO L225 Difference]: With dead ends: 44264 [2020-04-18 11:32:27,538 INFO L226 Difference]: Without dead ends: 44119 [2020-04-18 11:32:27,540 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26620 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8309, Invalid=53941, Unknown=0, NotChecked=0, Total=62250 [2020-04-18 11:32:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44119 states. [2020-04-18 11:32:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44119 to 7221. [2020-04-18 11:32:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7221 states. [2020-04-18 11:32:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7221 states to 7221 states and 33268 transitions. [2020-04-18 11:32:28,013 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 33268 transitions. Word has length 21 [2020-04-18 11:32:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:28,013 INFO L479 AbstractCegarLoop]: Abstraction has 7221 states and 33268 transitions. [2020-04-18 11:32:28,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:32:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 33268 transitions. [2020-04-18 11:32:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:28,015 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:28,015 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:29,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:29,418 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-04-18 11:32:29,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:29,419 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [288978607] [2020-04-18 11:32:29,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:29,421 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-04-18 11:32:29,421 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 11:32:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:29,421 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1956013121, now seen corresponding path program 2 times [2020-04-18 11:32:29,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:29,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221924762] [2020-04-18 11:32:29,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:29,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221924762] [2020-04-18 11:32:29,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:29,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:29,437 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:29,438 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:29,441 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:32:29,442 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:29,444 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:29,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:29,445 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-04-18 11:32:29,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:29,448 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:32:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:32:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:32:29,448 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:29,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 3 times [2020-04-18 11:32:29,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:29,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499580935] [2020-04-18 11:32:29,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:29,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499580935] [2020-04-18 11:32:29,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:29,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:32:29,474 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:29,475 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:29,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:32:29,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:29,483 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:29,484 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 5 states. [2020-04-18 11:32:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:29,499 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:32:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:32:29,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:29,499 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [288978607] [2020-04-18 11:32:29,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:29,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:32:29,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [288978607] [2020-04-18 11:32:29,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:32:29,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:29,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:29,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:29,501 INFO L87 Difference]: Start difference. First operand 7221 states and 33268 transitions. Second operand 5 states. [2020-04-18 11:32:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:29,608 INFO L93 Difference]: Finished difference Result 12418 states and 54012 transitions. [2020-04-18 11:32:29,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:32:29,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:32:29,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:29,638 INFO L225 Difference]: With dead ends: 12418 [2020-04-18 11:32:29,638 INFO L226 Difference]: Without dead ends: 12387 [2020-04-18 11:32:29,638 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:32:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12387 states. [2020-04-18 11:32:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12387 to 8573. [2020-04-18 11:32:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-04-18 11:32:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-04-18 11:32:29,885 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-04-18 11:32:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:29,886 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-04-18 11:32:29,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:32:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-04-18 11:32:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:29,887 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:29,887 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:29,887 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-04-18 11:32:29,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:29,888 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [140754241] [2020-04-18 11:32:29,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:29,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 203 transitions. [2020-04-18 11:32:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-18 11:32:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:29,892 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:29,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,893 INFO L82 PathProgramCache]: Analyzing trace with hash -25109276, now seen corresponding path program 2 times [2020-04-18 11:32:29,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:29,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165773982] [2020-04-18 11:32:29,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:29,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165773982] [2020-04-18 11:32:29,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:29,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:29,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:29,904 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:29,912 INFO L259 McrAutomatonBuilder]: Finished intersection with 77 states and 141 transitions. [2020-04-18 11:32:29,912 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:29,914 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:29,915 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-04-18 11:32:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:29,921 INFO L93 Difference]: Finished difference Result 117 states and 219 transitions. [2020-04-18 11:32:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 219 transitions. [2020-04-18 11:32:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:29,922 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:29,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2136056596, now seen corresponding path program 3 times [2020-04-18 11:32:29,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:29,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774385314] [2020-04-18 11:32:29,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:29,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774385314] [2020-04-18 11:32:29,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:29,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:29,943 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:29,945 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:29,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 97 transitions. [2020-04-18 11:32:29,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:29,959 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:29,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:29,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:29,960 INFO L87 Difference]: Start difference. First operand 117 states and 219 transitions. Second operand 5 states. [2020-04-18 11:32:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:29,991 INFO L93 Difference]: Finished difference Result 124 states and 224 transitions. [2020-04-18 11:32:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 224 transitions. [2020-04-18 11:32:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:29,992 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 4 times [2020-04-18 11:32:29,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:29,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595159291] [2020-04-18 11:32:29,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:30,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595159291] [2020-04-18 11:32:30,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290567309] [2020-04-18 11:32:30,033 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:30,107 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:30,107 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:30,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:30,108 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:30,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:30,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:30,129 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:30,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:30,137 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-04-18 11:32:30,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:30,166 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:30,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:30,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:30,167 INFO L87 Difference]: Start difference. First operand 124 states and 224 transitions. Second operand 9 states. [2020-04-18 11:32:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:30,261 INFO L93 Difference]: Finished difference Result 125 states and 224 transitions. [2020-04-18 11:32:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 224 transitions. [2020-04-18 11:32:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:30,261 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:30,262 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 5 times [2020-04-18 11:32:30,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:30,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942054873] [2020-04-18 11:32:30,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:30,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942054873] [2020-04-18 11:32:30,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:30,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:30,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:30,301 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:30,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:32:30,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:30,330 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:30,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:30,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:30,331 INFO L87 Difference]: Start difference. First operand 125 states and 224 transitions. Second operand 7 states. [2020-04-18 11:32:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:30,426 INFO L93 Difference]: Finished difference Result 128 states and 227 transitions. [2020-04-18 11:32:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 227 transitions. [2020-04-18 11:32:30,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:30,427 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [140754241] [2020-04-18 11:32:30,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:30,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:30,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [140754241] [2020-04-18 11:32:30,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:32:30,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:30,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:30,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:32:30,429 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 11 states. [2020-04-18 11:32:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:30,924 INFO L93 Difference]: Finished difference Result 22356 states and 88808 transitions. [2020-04-18 11:32:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:32:30,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-04-18 11:32:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:30,975 INFO L225 Difference]: With dead ends: 22356 [2020-04-18 11:32:30,975 INFO L226 Difference]: Without dead ends: 22295 [2020-04-18 11:32:30,975 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:32:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22295 states. [2020-04-18 11:32:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22295 to 8496. [2020-04-18 11:32:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8496 states. [2020-04-18 11:32:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8496 states to 8496 states and 38896 transitions. [2020-04-18 11:32:31,308 INFO L78 Accepts]: Start accepts. Automaton has 8496 states and 38896 transitions. Word has length 23 [2020-04-18 11:32:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:31,308 INFO L479 AbstractCegarLoop]: Abstraction has 8496 states and 38896 transitions. [2020-04-18 11:32:31,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:32:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8496 states and 38896 transitions. [2020-04-18 11:32:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:31,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:31,310 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:31,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:31,510 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-04-18 11:32:31,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:31,512 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1448257053] [2020-04-18 11:32:31,513 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:31,515 INFO L259 McrAutomatonBuilder]: Finished intersection with 84 states and 163 transitions. [2020-04-18 11:32:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-04-18 11:32:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:31,516 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash -905639014, now seen corresponding path program 2 times [2020-04-18 11:32:31,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:31,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993716257] [2020-04-18 11:32:31,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:31,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993716257] [2020-04-18 11:32:31,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:31,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:31,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:31,529 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:31,536 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 106 transitions. [2020-04-18 11:32:31,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:31,539 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:31,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:31,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:31,540 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-04-18 11:32:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:31,546 INFO L93 Difference]: Finished difference Result 97 states and 175 transitions. [2020-04-18 11:32:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 175 transitions. [2020-04-18 11:32:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:31,546 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash 72985754, now seen corresponding path program 3 times [2020-04-18 11:32:31,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:31,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663084908] [2020-04-18 11:32:31,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:31,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663084908] [2020-04-18 11:32:31,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:31,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:31,578 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:31,580 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:31,594 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 44 transitions. [2020-04-18 11:32:31,595 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:31,604 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:31,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:31,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:31,605 INFO L87 Difference]: Start difference. First operand 97 states and 175 transitions. Second operand 5 states. [2020-04-18 11:32:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:31,631 INFO L93 Difference]: Finished difference Result 104 states and 180 transitions. [2020-04-18 11:32:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 180 transitions. [2020-04-18 11:32:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:31,632 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash 72984734, now seen corresponding path program 4 times [2020-04-18 11:32:31,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:31,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335744410] [2020-04-18 11:32:31,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:31,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335744410] [2020-04-18 11:32:31,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137263515] [2020-04-18 11:32:31,664 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:31,748 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:31,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:31,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:31,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:31,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:31,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:32:31,760 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:31,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:31,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 44 transitions. [2020-04-18 11:32:31,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:31,794 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:31,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:31,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:32:31,795 INFO L87 Difference]: Start difference. First operand 104 states and 180 transitions. Second operand 7 states. [2020-04-18 11:32:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:31,838 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2020-04-18 11:32:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2020-04-18 11:32:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:31,839 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 5 times [2020-04-18 11:32:31,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:31,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450508425] [2020-04-18 11:32:31,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:31,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450508425] [2020-04-18 11:32:31,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100900307] [2020-04-18 11:32:31,884 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:31,958 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:31,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:31,960 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:31,960 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:31,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:31,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:31,973 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:31,975 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:31,979 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-04-18 11:32:31,979 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:32,040 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:32:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:32:32,040 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand 12 states. [2020-04-18 11:32:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:32,160 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2020-04-18 11:32:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2020-04-18 11:32:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:32,161 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 6 times [2020-04-18 11:32:32,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:32,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021570391] [2020-04-18 11:32:32,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:32,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021570391] [2020-04-18 11:32:32,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:32,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:32,213 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:32,214 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:32,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:32:32,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:32,232 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:32:32,233 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand 7 states. [2020-04-18 11:32:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:32,324 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2020-04-18 11:32:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2020-04-18 11:32:32,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:32,325 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1448257053] [2020-04-18 11:32:32,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:32,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:32,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1448257053] [2020-04-18 11:32:32,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:32:32,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:32:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:32:32,326 INFO L87 Difference]: Start difference. First operand 8496 states and 38896 transitions. Second operand 14 states. [2020-04-18 11:32:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:32,882 INFO L93 Difference]: Finished difference Result 24945 states and 96342 transitions. [2020-04-18 11:32:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:32:32,882 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-04-18 11:32:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:32,938 INFO L225 Difference]: With dead ends: 24945 [2020-04-18 11:32:32,939 INFO L226 Difference]: Without dead ends: 24844 [2020-04-18 11:32:32,939 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 11:32:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2020-04-18 11:32:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 8914. [2020-04-18 11:32:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8914 states. [2020-04-18 11:32:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8914 states to 8914 states and 40728 transitions. [2020-04-18 11:32:33,319 INFO L78 Accepts]: Start accepts. Automaton has 8914 states and 40728 transitions. Word has length 23 [2020-04-18 11:32:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:33,319 INFO L479 AbstractCegarLoop]: Abstraction has 8914 states and 40728 transitions. [2020-04-18 11:32:33,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:32:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8914 states and 40728 transitions. [2020-04-18 11:32:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:33,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:33,321 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:33,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:33,723 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:33,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-04-18 11:32:33,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:33,724 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [190985823] [2020-04-18 11:32:33,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,726 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 123 transitions. [2020-04-18 11:32:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 11:32:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:33,727 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1334245862, now seen corresponding path program 2 times [2020-04-18 11:32:33,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:33,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115240063] [2020-04-18 11:32:33,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:33,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115240063] [2020-04-18 11:32:33,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:33,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:33,742 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:33,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 86 transitions. [2020-04-18 11:32:33,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:33,750 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:33,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:33,751 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-04-18 11:32:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:33,758 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2020-04-18 11:32:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 131 transitions. [2020-04-18 11:32:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:33,758 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash -328925126, now seen corresponding path program 3 times [2020-04-18 11:32:33,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:33,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294447865] [2020-04-18 11:32:33,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:33,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294447865] [2020-04-18 11:32:33,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:33,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:33,796 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:33,798 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,804 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 36 transitions. [2020-04-18 11:32:33,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:33,813 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:33,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:33,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:33,814 INFO L87 Difference]: Start difference. First operand 77 states and 131 transitions. Second operand 5 states. [2020-04-18 11:32:33,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:33,845 INFO L93 Difference]: Finished difference Result 84 states and 136 transitions. [2020-04-18 11:32:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 136 transitions. [2020-04-18 11:32:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:33,846 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash -328925666, now seen corresponding path program 4 times [2020-04-18 11:32:33,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:33,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051502747] [2020-04-18 11:32:33,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:33,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051502747] [2020-04-18 11:32:33,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194769693] [2020-04-18 11:32:33,873 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:33,958 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:33,958 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:33,959 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:32:33,960 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:33,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:33,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:32:33,972 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:33,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:33,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 36 transitions. [2020-04-18 11:32:33,978 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:34,000 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:32:34,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:34,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:32:34,001 INFO L87 Difference]: Start difference. First operand 84 states and 136 transitions. Second operand 7 states. [2020-04-18 11:32:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:34,044 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2020-04-18 11:32:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2020-04-18 11:32:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:34,045 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:34,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:34,045 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 5 times [2020-04-18 11:32:34,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:34,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544193223] [2020-04-18 11:32:34,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:34,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544193223] [2020-04-18 11:32:34,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023763035] [2020-04-18 11:32:34,089 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:34,344 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:34,345 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:34,346 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:34,346 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:34,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:34,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:34,365 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:34,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:34,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-04-18 11:32:34,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:34,403 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:32:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:32:34,404 INFO L87 Difference]: Start difference. First operand 91 states and 140 transitions. Second operand 11 states. [2020-04-18 11:32:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:34,506 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2020-04-18 11:32:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2020-04-18 11:32:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:32:34,507 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 6 times [2020-04-18 11:32:34,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:34,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795330457] [2020-04-18 11:32:34,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:34,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795330457] [2020-04-18 11:32:34,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:34,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:32:34,537 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:34,538 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:34,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:32:34,541 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:34,548 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:34,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:34,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:32:34,549 INFO L87 Difference]: Start difference. First operand 91 states and 140 transitions. Second operand 7 states. [2020-04-18 11:32:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:34,629 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2020-04-18 11:32:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2020-04-18 11:32:34,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:34,630 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [190985823] [2020-04-18 11:32:34,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:34,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:32:34,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [190985823] [2020-04-18 11:32:34,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:32:34,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:34,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:32:34,632 INFO L87 Difference]: Start difference. First operand 8914 states and 40728 transitions. Second operand 13 states. [2020-04-18 11:32:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:35,203 INFO L93 Difference]: Finished difference Result 25403 states and 98232 transitions. [2020-04-18 11:32:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:32:35,203 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-04-18 11:32:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:35,262 INFO L225 Difference]: With dead ends: 25403 [2020-04-18 11:32:35,262 INFO L226 Difference]: Without dead ends: 25289 [2020-04-18 11:32:35,263 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:32:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2020-04-18 11:32:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 9426. [2020-04-18 11:32:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-04-18 11:32:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-04-18 11:32:35,657 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-04-18 11:32:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:35,657 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-04-18 11:32:35,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:32:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-04-18 11:32:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:35,660 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:35,660 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:36,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:36,061 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-04-18 11:32:36,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:36,062 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1769359574] [2020-04-18 11:32:36,063 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:36,069 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 609 transitions. [2020-04-18 11:32:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-04-18 11:32:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:36,071 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash 825478653, now seen corresponding path program 2 times [2020-04-18 11:32:36,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:36,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795562700] [2020-04-18 11:32:36,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:36,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795562700] [2020-04-18 11:32:36,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:36,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:36,081 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:36,083 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:36,094 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 163 transitions. [2020-04-18 11:32:36,094 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:36,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:36,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:36,098 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 3 states. [2020-04-18 11:32:36,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:36,111 INFO L93 Difference]: Finished difference Result 295 states and 715 transitions. [2020-04-18 11:32:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 715 transitions. [2020-04-18 11:32:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:36,112 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 783331315, now seen corresponding path program 3 times [2020-04-18 11:32:36,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:36,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13073087] [2020-04-18 11:32:36,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:36,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13073087] [2020-04-18 11:32:36,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:36,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:36,137 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:36,139 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:36,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 148 transitions. [2020-04-18 11:32:36,150 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:36,157 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:36,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:36,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:36,158 INFO L87 Difference]: Start difference. First operand 295 states and 715 transitions. Second operand 5 states. [2020-04-18 11:32:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:36,215 INFO L93 Difference]: Finished difference Result 386 states and 864 transitions. [2020-04-18 11:32:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 864 transitions. [2020-04-18 11:32:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:36,216 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash 145278167, now seen corresponding path program 4 times [2020-04-18 11:32:36,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:36,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940396232] [2020-04-18 11:32:36,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:36,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940396232] [2020-04-18 11:32:36,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850771340] [2020-04-18 11:32:36,257 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:36,354 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:36,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:36,355 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:36,356 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:36,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:36,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:32:36,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:36,370 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:36,380 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 94 transitions. [2020-04-18 11:32:36,380 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:36,403 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:36,403 INFO L87 Difference]: Start difference. First operand 386 states and 864 transitions. Second operand 9 states. [2020-04-18 11:32:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:36,609 INFO L93 Difference]: Finished difference Result 428 states and 916 transitions. [2020-04-18 11:32:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 916 transitions. [2020-04-18 11:32:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:36,610 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:36,610 INFO L82 PathProgramCache]: Analyzing trace with hash 145277147, now seen corresponding path program 5 times [2020-04-18 11:32:36,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:36,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095068800] [2020-04-18 11:32:36,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:36,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095068800] [2020-04-18 11:32:36,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831266727] [2020-04-18 11:32:36,645 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:36,721 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:36,721 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:36,722 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:36,723 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:36,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:36,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:36,741 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:36,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:36,752 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 94 transitions. [2020-04-18 11:32:36,752 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:36,760 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:36,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:36,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:36,761 INFO L87 Difference]: Start difference. First operand 428 states and 916 transitions. Second operand 9 states. [2020-04-18 11:32:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:36,996 INFO L93 Difference]: Finished difference Result 485 states and 974 transitions. [2020-04-18 11:32:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 974 transitions. [2020-04-18 11:32:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:36,997 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:36,998 INFO L82 PathProgramCache]: Analyzing trace with hash 145051157, now seen corresponding path program 6 times [2020-04-18 11:32:36,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:36,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645116817] [2020-04-18 11:32:37,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:37,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645116817] [2020-04-18 11:32:37,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016067732] [2020-04-18 11:32:37,095 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:37,179 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:32:37,180 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:37,181 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:37,181 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:32:37,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:37,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:37,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:37,207 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:37,220 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-04-18 11:32:37,220 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:37,301 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:32:37,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:32:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:32:37,302 INFO L87 Difference]: Start difference. First operand 485 states and 974 transitions. Second operand 14 states. [2020-04-18 11:32:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:37,862 INFO L93 Difference]: Finished difference Result 492 states and 979 transitions. [2020-04-18 11:32:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 979 transitions. [2020-04-18 11:32:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:37,863 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:32:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash -78179145, now seen corresponding path program 7 times [2020-04-18 11:32:37,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:37,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622436900] [2020-04-18 11:32:37,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:37,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622436900] [2020-04-18 11:32:37,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259548359] [2020-04-18 11:32:37,940 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:38,026 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:38,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:38,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:38,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:38,068 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:38,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:38,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:32:38,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:38,391 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:38,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:38,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 11:32:38,391 INFO L87 Difference]: Start difference. First operand 492 states and 979 transitions. Second operand 11 states. [2020-04-18 11:32:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:38,859 INFO L93 Difference]: Finished difference Result 499 states and 984 transitions. [2020-04-18 11:32:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 984 transitions. [2020-04-18 11:32:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:38,860 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:32:38,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:38,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1419407101, now seen corresponding path program 8 times [2020-04-18 11:32:38,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:38,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051623039] [2020-04-18 11:32:38,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:38,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051623039] [2020-04-18 11:32:38,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:38,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:32:38,891 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:38,893 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:38,899 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:32:38,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:38,924 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=2776, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:32:38,924 INFO L87 Difference]: Start difference. First operand 499 states and 984 transitions. Second operand 7 states. [2020-04-18 11:32:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:39,143 INFO L93 Difference]: Finished difference Result 535 states and 1019 transitions. [2020-04-18 11:32:39,143 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1019 transitions. [2020-04-18 11:32:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:39,144 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:32:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1418867611, now seen corresponding path program 9 times [2020-04-18 11:32:39,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:39,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327570631] [2020-04-18 11:32:39,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:39,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327570631] [2020-04-18 11:32:39,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894554666] [2020-04-18 11:32:39,175 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:39,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 11:32:39,256 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:39,257 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:39,257 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:39,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:39,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:39,271 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:39,273 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:39,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:32:39,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:39,313 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:39,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=3917, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 11:32:39,314 INFO L87 Difference]: Start difference. First operand 535 states and 1019 transitions. Second operand 9 states. [2020-04-18 11:32:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:39,535 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:32:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:32:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:39,537 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:32:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 10 times [2020-04-18 11:32:39,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:39,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163758088] [2020-04-18 11:32:39,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:39,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163758088] [2020-04-18 11:32:39,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188967786] [2020-04-18 11:32:39,599 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:39,677 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:39,678 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:39,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:39,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:39,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:39,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:39,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:39,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:39,704 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:32:39,705 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:39,886 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 11:32:39,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 11:32:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1251, Invalid=5391, Unknown=0, NotChecked=0, Total=6642 [2020-04-18 11:32:39,888 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 20 states. [2020-04-18 11:32:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:40,704 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:32:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:32:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:40,705 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:32:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 11 times [2020-04-18 11:32:40,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:40,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685870405] [2020-04-18 11:32:40,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:40,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685870405] [2020-04-18 11:32:40,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818436360] [2020-04-18 11:32:40,749 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:40,834 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:40,835 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:40,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:40,836 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:40,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:40,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:40,852 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:40,854 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:40,863 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:32:40,863 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:40,896 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:32:40,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:32:40,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1635, Invalid=7295, Unknown=0, NotChecked=0, Total=8930 [2020-04-18 11:32:40,898 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 14 states. [2020-04-18 11:32:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:41,651 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:32:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:32:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:41,652 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:32:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:41,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 12 times [2020-04-18 11:32:41,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:41,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351663226] [2020-04-18 11:32:41,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:41,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351663226] [2020-04-18 11:32:41,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:41,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:41,839 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:41,843 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:41,851 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:41,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:41,852 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:41,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2139, Invalid=10293, Unknown=0, NotChecked=0, Total=12432 [2020-04-18 11:32:41,855 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 9 states. [2020-04-18 11:32:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:42,349 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:32:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:32:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:42,350 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:32:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:42,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 13 times [2020-04-18 11:32:42,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:42,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325750565] [2020-04-18 11:32:42,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:42,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325750565] [2020-04-18 11:32:42,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:42,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:42,416 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:42,418 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:42,425 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:42,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:42,426 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:42,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:42,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2519, Invalid=12733, Unknown=0, NotChecked=0, Total=15252 [2020-04-18 11:32:42,428 INFO L87 Difference]: Start difference. First operand 602 states and 1108 transitions. Second operand 9 states. [2020-04-18 11:32:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:42,917 INFO L93 Difference]: Finished difference Result 602 states and 1108 transitions. [2020-04-18 11:32:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1108 transitions. [2020-04-18 11:32:42,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:42,919 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1769359574] [2020-04-18 11:32:42,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:42,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:32:42,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1769359574] [2020-04-18 11:32:42,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 11:32:42,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:42,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 11:32:42,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3000, Invalid=16182, Unknown=0, NotChecked=0, Total=19182 [2020-04-18 11:32:42,922 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 27 states. [2020-04-18 11:32:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:47,622 INFO L93 Difference]: Finished difference Result 48582 states and 167110 transitions. [2020-04-18 11:32:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:32:47,622 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-04-18 11:32:47,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:32:47,732 INFO L225 Difference]: With dead ends: 48582 [2020-04-18 11:32:47,732 INFO L226 Difference]: Without dead ends: 48341 [2020-04-18 11:32:47,735 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 556 SyntacticMatches, 5 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27287 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8784, Invalid=54972, Unknown=0, NotChecked=0, Total=63756 [2020-04-18 11:32:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48341 states. [2020-04-18 11:32:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48341 to 8476. [2020-04-18 11:32:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8476 states. [2020-04-18 11:32:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 38671 transitions. [2020-04-18 11:32:48,314 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 38671 transitions. Word has length 25 [2020-04-18 11:32:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:32:48,315 INFO L479 AbstractCegarLoop]: Abstraction has 8476 states and 38671 transitions. [2020-04-18 11:32:48,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 11:32:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 38671 transitions. [2020-04-18 11:32:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:48,317 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:32:48,317 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:32:49,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:49,719 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:32:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:49,720 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-04-18 11:32:49,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:32:49,721 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1930903528] [2020-04-18 11:32:49,722 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:49,727 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 457 transitions. [2020-04-18 11:32:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-04-18 11:32:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:49,728 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:32:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1772610045, now seen corresponding path program 2 times [2020-04-18 11:32:49,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:49,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880475765] [2020-04-18 11:32:49,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:49,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880475765] [2020-04-18 11:32:49,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:49,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:32:49,751 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:49,753 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:49,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 85 states and 155 transitions. [2020-04-18 11:32:49,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:49,765 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:49,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:32:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:32:49,765 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-04-18 11:32:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:49,774 INFO L93 Difference]: Finished difference Result 231 states and 531 transitions. [2020-04-18 11:32:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 531 transitions. [2020-04-18 11:32:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:49,775 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:32:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:49,775 INFO L82 PathProgramCache]: Analyzing trace with hash -111158227, now seen corresponding path program 3 times [2020-04-18 11:32:49,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:49,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595320675] [2020-04-18 11:32:49,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:49,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595320675] [2020-04-18 11:32:49,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:49,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:32:49,794 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:49,797 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:49,805 INFO L259 McrAutomatonBuilder]: Finished intersection with 75 states and 128 transitions. [2020-04-18 11:32:49,805 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:49,812 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:49,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:32:49,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:32:49,812 INFO L87 Difference]: Start difference. First operand 231 states and 531 transitions. Second operand 5 states. [2020-04-18 11:32:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:49,862 INFO L93 Difference]: Finished difference Result 294 states and 632 transitions. [2020-04-18 11:32:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 632 transitions. [2020-04-18 11:32:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:49,863 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:32:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:49,863 INFO L82 PathProgramCache]: Analyzing trace with hash -558420233, now seen corresponding path program 4 times [2020-04-18 11:32:49,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:49,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542697595] [2020-04-18 11:32:49,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:49,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542697595] [2020-04-18 11:32:49,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220051071] [2020-04-18 11:32:49,901 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:49,978 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:49,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:49,979 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:49,979 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:32:49,990 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:49,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:50,000 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 86 transitions. [2020-04-18 11:32:50,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:50,024 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:50,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:50,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:32:50,025 INFO L87 Difference]: Start difference. First operand 294 states and 632 transitions. Second operand 9 states. [2020-04-18 11:32:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:50,219 INFO L93 Difference]: Finished difference Result 336 states and 684 transitions. [2020-04-18 11:32:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 684 transitions. [2020-04-18 11:32:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:50,220 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:32:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash -558420773, now seen corresponding path program 5 times [2020-04-18 11:32:50,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:50,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413095706] [2020-04-18 11:32:50,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:50,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413095706] [2020-04-18 11:32:50,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233209647] [2020-04-18 11:32:50,253 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:50,325 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:50,325 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:50,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:50,327 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:50,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:50,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:50,345 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:50,347 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:50,355 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 86 transitions. [2020-04-18 11:32:50,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:50,366 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:32:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:32:50,367 INFO L87 Difference]: Start difference. First operand 336 states and 684 transitions. Second operand 9 states. [2020-04-18 11:32:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:50,582 INFO L93 Difference]: Finished difference Result 389 states and 738 transitions. [2020-04-18 11:32:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 738 transitions. [2020-04-18 11:32:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:50,583 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:32:50,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:50,583 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 6 times [2020-04-18 11:32:50,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:50,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613305447] [2020-04-18 11:32:50,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:50,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613305447] [2020-04-18 11:32:50,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613405485] [2020-04-18 11:32:50,641 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:50,865 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:32:50,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:50,866 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:50,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:32:50,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:50,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:50,880 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:50,882 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:50,890 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:32:50,890 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:50,930 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:32:50,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:50,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:32:50,931 INFO L87 Difference]: Start difference. First operand 389 states and 738 transitions. Second operand 13 states. [2020-04-18 11:32:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:51,445 INFO L93 Difference]: Finished difference Result 396 states and 743 transitions. [2020-04-18 11:32:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 743 transitions. [2020-04-18 11:32:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:51,446 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:32:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 7 times [2020-04-18 11:32:51,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:51,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678668875] [2020-04-18 11:32:51,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:51,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678668875] [2020-04-18 11:32:51,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961708267] [2020-04-18 11:32:51,516 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:51,605 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:51,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:32:51,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:51,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:51,653 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:51,655 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:51,662 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:32:51,663 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:51,673 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:51,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:32:51,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1371, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:32:51,673 INFO L87 Difference]: Start difference. First operand 396 states and 743 transitions. Second operand 11 states. [2020-04-18 11:32:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,135 INFO L93 Difference]: Finished difference Result 403 states and 748 transitions. [2020-04-18 11:32:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 748 transitions. [2020-04-18 11:32:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:52,136 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:32:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1730092701, now seen corresponding path program 8 times [2020-04-18 11:32:52,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529730118] [2020-04-18 11:32:52,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:52,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529730118] [2020-04-18 11:32:52,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:52,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:32:52,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,207 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:32:52,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,244 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:32:52,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:32:52,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 11:32:52,245 INFO L87 Difference]: Start difference. First operand 403 states and 748 transitions. Second operand 7 states. [2020-04-18 11:32:52,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,444 INFO L93 Difference]: Finished difference Result 439 states and 783 transitions. [2020-04-18 11:32:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 783 transitions. [2020-04-18 11:32:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:52,445 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:32:52,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1730029851, now seen corresponding path program 9 times [2020-04-18 11:32:52,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979730073] [2020-04-18 11:32:52,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:52,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979730073] [2020-04-18 11:32:52,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593891622] [2020-04-18 11:32:52,473 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:52,552 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:32:52,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:52,553 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:32:52,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:52,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:52,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:32:52,567 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,576 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:32:52,576 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:52,620 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:32:52,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:52,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3822, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 11:32:52,621 INFO L87 Difference]: Start difference. First operand 439 states and 783 transitions. Second operand 9 states. [2020-04-18 11:32:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:52,838 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:52,839 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:32:52,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:52,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 10 times [2020-04-18 11:32:52,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:52,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600156158] [2020-04-18 11:32:52,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:52,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600156158] [2020-04-18 11:32:52,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422800316] [2020-04-18 11:32:52,886 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:52,967 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:32:52,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:52,968 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:52,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:52,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:52,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:52,986 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:52,988 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:52,994 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:32:52,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:53,071 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:32:53,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:32:53,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=5041, Unknown=0, NotChecked=0, Total=6162 [2020-04-18 11:32:53,072 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 17 states. [2020-04-18 11:32:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:53,772 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:53,774 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:32:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:53,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 11 times [2020-04-18 11:32:53,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:53,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855685498] [2020-04-18 11:32:53,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:53,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855685498] [2020-04-18 11:32:53,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985890029] [2020-04-18 11:32:53,838 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:32:53,912 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:32:53,912 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:32:53,913 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:32:53,914 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:32:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:32:53,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:32:53,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:32:53,930 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:53,931 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:53,936 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:32:53,936 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:53,958 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:32:53,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:32:53,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=6887, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 11:32:53,960 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 13 states. [2020-04-18 11:32:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:54,604 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:54,606 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:32:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 12 times [2020-04-18 11:32:54,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:54,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676386969] [2020-04-18 11:32:54,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:54,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676386969] [2020-04-18 11:32:54,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:54,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:54,649 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:54,651 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:54,655 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:54,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:54,655 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:54,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1970, Invalid=9802, Unknown=0, NotChecked=0, Total=11772 [2020-04-18 11:32:54,656 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 9 states. [2020-04-18 11:32:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:55,069 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:32:55,071 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:32:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:32:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 13 times [2020-04-18 11:32:55,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:32:55,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826498735] [2020-04-18 11:32:55,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:32:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:32:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:32:55,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826498735] [2020-04-18 11:32:55,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:32:55,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:32:55,117 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:32:55,119 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:32:55,125 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:32:55,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:32:55,126 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:32:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:32:55,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2330, Invalid=12190, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 11:32:55,128 INFO L87 Difference]: Start difference. First operand 494 states and 848 transitions. Second operand 9 states. [2020-04-18 11:32:55,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:32:55,795 INFO L93 Difference]: Finished difference Result 494 states and 848 transitions. [2020-04-18 11:32:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 848 transitions. [2020-04-18 11:32:55,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:32:55,798 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1930903528] [2020-04-18 11:32:55,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:32:55,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:32:55,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1930903528] [2020-04-18 11:32:55,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:32:55,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:32:55,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:32:55,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2794, Invalid=15566, Unknown=0, NotChecked=0, Total=18360 [2020-04-18 11:32:55,803 INFO L87 Difference]: Start difference. First operand 8476 states and 38671 transitions. Second operand 24 states. [2020-04-18 11:33:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:00,119 INFO L93 Difference]: Finished difference Result 46283 states and 159277 transitions. [2020-04-18 11:33:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:33:00,120 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-04-18 11:33:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:00,225 INFO L225 Difference]: With dead ends: 46283 [2020-04-18 11:33:00,225 INFO L226 Difference]: Without dead ends: 46035 [2020-04-18 11:33:00,227 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26371 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8309, Invalid=53941, Unknown=0, NotChecked=0, Total=62250 [2020-04-18 11:33:00,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46035 states. [2020-04-18 11:33:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46035 to 7590. [2020-04-18 11:33:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7590 states. [2020-04-18 11:33:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 34684 transitions. [2020-04-18 11:33:00,792 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 34684 transitions. Word has length 25 [2020-04-18 11:33:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:00,792 INFO L479 AbstractCegarLoop]: Abstraction has 7590 states and 34684 transitions. [2020-04-18 11:33:00,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:33:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 34684 transitions. [2020-04-18 11:33:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:00,795 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:00,795 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:02,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:02,198 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-04-18 11:33:02,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:02,199 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2082279477] [2020-04-18 11:33:02,201 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:02,204 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 417 transitions. [2020-04-18 11:33:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-04-18 11:33:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:02,206 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:02,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1380847073, now seen corresponding path program 2 times [2020-04-18 11:33:02,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:02,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720601102] [2020-04-18 11:33:02,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:02,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720601102] [2020-04-18 11:33:02,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:02,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:02,215 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:02,216 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:02,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 182 transitions. [2020-04-18 11:33:02,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:02,229 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:02,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:02,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:02,229 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-04-18 11:33:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:02,239 INFO L93 Difference]: Finished difference Result 211 states and 487 transitions. [2020-04-18 11:33:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 487 transitions. [2020-04-18 11:33:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:02,240 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:02,241 INFO L82 PathProgramCache]: Analyzing trace with hash 181846743, now seen corresponding path program 3 times [2020-04-18 11:33:02,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:02,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303257209] [2020-04-18 11:33:02,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:02,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303257209] [2020-04-18 11:33:02,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:02,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:02,333 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:02,334 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:02,341 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:33:02,341 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:02,348 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:02,349 INFO L87 Difference]: Start difference. First operand 211 states and 487 transitions. Second operand 5 states. [2020-04-18 11:33:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:02,403 INFO L93 Difference]: Finished difference Result 246 states and 540 transitions. [2020-04-18 11:33:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 540 transitions. [2020-04-18 11:33:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:02,404 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:02,404 INFO L82 PathProgramCache]: Analyzing trace with hash 181830003, now seen corresponding path program 4 times [2020-04-18 11:33:02,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:02,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175416776] [2020-04-18 11:33:02,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:02,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175416776] [2020-04-18 11:33:02,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652264981] [2020-04-18 11:33:02,433 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:02,519 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:02,519 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:02,520 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:02,521 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:02,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:02,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:33:02,531 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:02,532 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:02,540 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:33:02,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:02,555 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:33:02,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:02,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:33:02,556 INFO L87 Difference]: Start difference. First operand 246 states and 540 transitions. Second operand 7 states. [2020-04-18 11:33:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:02,634 INFO L93 Difference]: Finished difference Result 331 states and 661 transitions. [2020-04-18 11:33:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 661 transitions. [2020-04-18 11:33:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:02,635 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 181828983, now seen corresponding path program 5 times [2020-04-18 11:33:02,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:02,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478607324] [2020-04-18 11:33:02,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:02,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478607324] [2020-04-18 11:33:02,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908246247] [2020-04-18 11:33:02,673 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:02,749 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:33:02,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:02,751 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:02,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:02,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:02,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:33:02,763 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:02,765 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:02,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2020-04-18 11:33:02,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:02,785 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:02,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:33:02,785 INFO L87 Difference]: Start difference. First operand 331 states and 661 transitions. Second operand 7 states. [2020-04-18 11:33:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:02,862 INFO L93 Difference]: Finished difference Result 442 states and 794 transitions. [2020-04-18 11:33:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 794 transitions. [2020-04-18 11:33:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:02,863 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:33:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:02,864 INFO L82 PathProgramCache]: Analyzing trace with hash 189585273, now seen corresponding path program 6 times [2020-04-18 11:33:02,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:02,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737377480] [2020-04-18 11:33:02,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:02,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737377480] [2020-04-18 11:33:02,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491263865] [2020-04-18 11:33:02,892 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:02,969 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:33:02,969 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:02,970 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:02,971 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:02,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:02,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:33:02,984 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:02,985 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:02,994 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 93 transitions. [2020-04-18 11:33:02,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,031 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:03,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:33:03,032 INFO L87 Difference]: Start difference. First operand 442 states and 794 transitions. Second operand 11 states. [2020-04-18 11:33:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:03,303 INFO L93 Difference]: Finished difference Result 457 states and 806 transitions. [2020-04-18 11:33:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 806 transitions. [2020-04-18 11:33:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:03,304 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:33:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 189358263, now seen corresponding path program 7 times [2020-04-18 11:33:03,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:03,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443793295] [2020-04-18 11:33:03,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:03,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443793295] [2020-04-18 11:33:03,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200665415] [2020-04-18 11:33:03,341 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,422 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:03,422 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:03,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:03,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:03,439 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:03,441 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 93 transitions. [2020-04-18 11:33:03,453 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,455 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:33:03,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-04-18 11:33:03,455 INFO L87 Difference]: Start difference. First operand 457 states and 806 transitions. Second operand 11 states. [2020-04-18 11:33:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:03,717 INFO L93 Difference]: Finished difference Result 468 states and 813 transitions. [2020-04-18 11:33:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 813 transitions. [2020-04-18 11:33:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:03,717 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:33:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:03,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1419610833, now seen corresponding path program 8 times [2020-04-18 11:33:03,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:03,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562670277] [2020-04-18 11:33:03,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:03,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562670277] [2020-04-18 11:33:03,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:03,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:33:03,774 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:03,778 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:03,790 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:33:03,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:03,811 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:03,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:03,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:33:03,812 INFO L87 Difference]: Start difference. First operand 468 states and 813 transitions. Second operand 7 states. [2020-04-18 11:33:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:04,066 INFO L93 Difference]: Finished difference Result 483 states and 825 transitions. [2020-04-18 11:33:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 825 transitions. [2020-04-18 11:33:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:04,067 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:33:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:04,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1418874183, now seen corresponding path program 9 times [2020-04-18 11:33:04,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:04,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569704631] [2020-04-18 11:33:04,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:04,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569704631] [2020-04-18 11:33:04,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383216820] [2020-04-18 11:33:04,129 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:04,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 11:33:04,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:04,258 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:04,260 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:04,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:04,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:04,285 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:04,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:04,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 49 transitions. [2020-04-18 11:33:04,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:04,297 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:04,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:04,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 11:33:04,298 INFO L87 Difference]: Start difference. First operand 483 states and 825 transitions. Second operand 9 states. [2020-04-18 11:33:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:04,489 INFO L93 Difference]: Finished difference Result 494 states and 831 transitions. [2020-04-18 11:33:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 831 transitions. [2020-04-18 11:33:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:04,490 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:33:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 10 times [2020-04-18 11:33:04,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:04,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351380347] [2020-04-18 11:33:04,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:04,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351380347] [2020-04-18 11:33:04,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498915100] [2020-04-18 11:33:04,547 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:04,628 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:04,629 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:04,629 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:04,630 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:04,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:04,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:04,643 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:04,645 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:04,651 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:33:04,652 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:04,715 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:04,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:33:04,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=1494, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 11:33:04,716 INFO L87 Difference]: Start difference. First operand 494 states and 831 transitions. Second operand 14 states. [2020-04-18 11:33:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:05,458 INFO L93 Difference]: Finished difference Result 494 states and 831 transitions. [2020-04-18 11:33:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 831 transitions. [2020-04-18 11:33:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:05,459 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:33:05,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 11 times [2020-04-18 11:33:05,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:05,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657798467] [2020-04-18 11:33:05,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:05,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657798467] [2020-04-18 11:33:05,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137839122] [2020-04-18 11:33:05,528 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:05,608 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:33:05,608 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:05,609 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:05,610 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 11:33:05,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:05,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:05,638 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:05,640 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:05,650 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:33:05,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:05,762 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:33:05,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 11:33:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=3115, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 11:33:05,763 INFO L87 Difference]: Start difference. First operand 494 states and 831 transitions. Second operand 18 states. [2020-04-18 11:33:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:06,492 INFO L93 Difference]: Finished difference Result 494 states and 831 transitions. [2020-04-18 11:33:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 831 transitions. [2020-04-18 11:33:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:06,493 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:33:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:06,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1729639995, now seen corresponding path program 12 times [2020-04-18 11:33:06,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:06,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532734849] [2020-04-18 11:33:06,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:06,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532734849] [2020-04-18 11:33:06,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:06,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:06,528 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:06,530 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:06,537 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:33:06,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:06,583 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:06,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=4859, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 11:33:06,584 INFO L87 Difference]: Start difference. First operand 494 states and 831 transitions. Second operand 7 states. [2020-04-18 11:33:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:06,783 INFO L93 Difference]: Finished difference Result 509 states and 842 transitions. [2020-04-18 11:33:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 842 transitions. [2020-04-18 11:33:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:06,784 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:33:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1730014785, now seen corresponding path program 13 times [2020-04-18 11:33:06,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:06,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696349335] [2020-04-18 11:33:06,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:06,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696349335] [2020-04-18 11:33:06,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607639230] [2020-04-18 11:33:06,818 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:06,899 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:06,900 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:06,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:06,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:06,916 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:06,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:06,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 41 transitions. [2020-04-18 11:33:06,922 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:06,924 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:33:06,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=5712, Unknown=0, NotChecked=0, Total=6972 [2020-04-18 11:33:06,925 INFO L87 Difference]: Start difference. First operand 509 states and 842 transitions. Second operand 9 states. [2020-04-18 11:33:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:07,138 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:33:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:33:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:07,139 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:33:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:07,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 14 times [2020-04-18 11:33:07,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:07,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572628346] [2020-04-18 11:33:07,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:07,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572628346] [2020-04-18 11:33:07,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569076061] [2020-04-18 11:33:07,182 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:07,259 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:33:07,259 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:07,260 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:07,260 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:07,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:07,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:07,275 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:07,276 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:07,282 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:33:07,282 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:07,324 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:33:07,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:33:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1422, Invalid=6588, Unknown=0, NotChecked=0, Total=8010 [2020-04-18 11:33:07,325 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 17 states. [2020-04-18 11:33:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:08,035 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:33:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:33:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:08,036 INFO L105 Mcr]: ---- MCR iteration 13 ---- [2020-04-18 11:33:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 15 times [2020-04-18 11:33:08,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:08,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929073337] [2020-04-18 11:33:08,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:08,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929073337] [2020-04-18 11:33:08,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536295322] [2020-04-18 11:33:08,085 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:08,158 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:33:08,158 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:08,159 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:08,159 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 11:33:08,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:08,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:08,175 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:08,177 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:08,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:33:08,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:08,199 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:33:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1817, Invalid=8689, Unknown=0, NotChecked=0, Total=10506 [2020-04-18 11:33:08,200 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 13 states. [2020-04-18 11:33:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:08,816 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:33:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:33:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:08,817 INFO L105 Mcr]: ---- MCR iteration 14 ---- [2020-04-18 11:33:08,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:08,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 16 times [2020-04-18 11:33:08,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:08,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069284610] [2020-04-18 11:33:08,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:08,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069284610] [2020-04-18 11:33:08,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:08,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:08,891 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:08,892 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:08,898 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:33:08,898 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:08,898 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:08,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:08,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2233, Invalid=11339, Unknown=0, NotChecked=0, Total=13572 [2020-04-18 11:33:08,900 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 9 states. [2020-04-18 11:33:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:09,326 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:33:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:33:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:09,327 INFO L105 Mcr]: ---- MCR iteration 15 ---- [2020-04-18 11:33:09,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 17 times [2020-04-18 11:33:09,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:09,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678495352] [2020-04-18 11:33:09,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:33:09,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678495352] [2020-04-18 11:33:09,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:09,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:09,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:09,371 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:09,375 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:33:09,375 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:09,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:09,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:09,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2608, Invalid=13904, Unknown=0, NotChecked=0, Total=16512 [2020-04-18 11:33:09,377 INFO L87 Difference]: Start difference. First operand 520 states and 848 transitions. Second operand 9 states. [2020-04-18 11:33:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:09,821 INFO L93 Difference]: Finished difference Result 520 states and 848 transitions. [2020-04-18 11:33:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 848 transitions. [2020-04-18 11:33:09,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:09,823 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2082279477] [2020-04-18 11:33:09,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:09,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:33:09,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2082279477] [2020-04-18 11:33:09,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 11:33:09,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 11:33:09,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=16735, Unknown=0, NotChecked=0, Total=19740 [2020-04-18 11:33:09,826 INFO L87 Difference]: Start difference. First operand 7590 states and 34684 transitions. Second operand 27 states. [2020-04-18 11:33:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:15,687 INFO L93 Difference]: Finished difference Result 45221 states and 154374 transitions. [2020-04-18 11:33:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2020-04-18 11:33:15,688 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 25 [2020-04-18 11:33:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:15,787 INFO L225 Difference]: With dead ends: 45221 [2020-04-18 11:33:15,788 INFO L226 Difference]: Without dead ends: 44954 [2020-04-18 11:33:15,791 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 775 SyntacticMatches, 2 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33574 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=10400, Invalid=68842, Unknown=0, NotChecked=0, Total=79242 [2020-04-18 11:33:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44954 states. [2020-04-18 11:33:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44954 to 7269. [2020-04-18 11:33:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-04-18 11:33:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-04-18 11:33:16,319 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-04-18 11:33:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:16,319 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-04-18 11:33:16,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 11:33:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-04-18 11:33:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:16,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:16,322 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:18,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:18,326 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-04-18 11:33:18,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:18,327 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [240973681] [2020-04-18 11:33:18,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:18,332 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 69 transitions. [2020-04-18 11:33:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-04-18 11:33:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:18,332 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:18,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1874285922, now seen corresponding path program 2 times [2020-04-18 11:33:18,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:18,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844745554] [2020-04-18 11:33:18,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:33:18,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844745554] [2020-04-18 11:33:18,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:18,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:18,343 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:18,345 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:18,350 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 67 transitions. [2020-04-18 11:33:18,351 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:18,358 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:18,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:18,359 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-04-18 11:33:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:18,361 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:33:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:33:18,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:33:18,362 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:18,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 3 times [2020-04-18 11:33:18,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:18,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325622159] [2020-04-18 11:33:18,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:33:18,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325622159] [2020-04-18 11:33:18,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:18,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:33:18,387 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:18,390 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:18,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:33:18,394 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:18,407 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:18,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:18,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:18,408 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand 5 states. [2020-04-18 11:33:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:18,423 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:33:18,423 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:33:18,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:18,423 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [240973681] [2020-04-18 11:33:18,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:18,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:33:18,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [240973681] [2020-04-18 11:33:18,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:33:18,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:18,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:18,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:18,424 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-04-18 11:33:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:18,580 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-04-18 11:33:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:33:18,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-18 11:33:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:18,642 INFO L225 Difference]: With dead ends: 11919 [2020-04-18 11:33:18,642 INFO L226 Difference]: Without dead ends: 11887 [2020-04-18 11:33:18,642 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-04-18 11:33:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-04-18 11:33:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-04-18 11:33:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-04-18 11:33:19,131 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-04-18 11:33:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:19,132 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-04-18 11:33:19,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:33:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-04-18 11:33:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:33:19,138 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:19,139 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:19,139 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-04-18 11:33:19,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:19,140 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [167484720] [2020-04-18 11:33:19,141 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:19,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2020-04-18 11:33:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-04-18 11:33:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 11:33:19,144 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 2 times [2020-04-18 11:33:19,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:19,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549966096] [2020-04-18 11:33:19,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:33:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:33:19,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:33:19,198 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:33:19,198 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:33:19,200 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 11:33:19,201 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 11:33:19,225 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,225 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,226 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,226 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,226 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,226 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,226 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,227 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,227 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,227 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,227 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,227 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,228 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,228 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,228 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,228 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,228 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,229 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,229 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,229 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,229 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,229 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,230 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,230 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,238 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,238 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,238 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,239 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,239 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,239 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,240 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,240 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,241 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,241 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,241 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,241 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,241 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,242 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,242 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,242 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,242 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,242 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,243 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,243 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,243 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,243 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,243 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,243 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,244 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,244 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,244 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,244 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,244 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,244 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,245 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,245 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,245 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,245 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,245 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,246 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,246 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,246 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,246 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,247 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,247 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,247 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,247 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,247 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,247 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,248 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,248 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,248 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,248 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,248 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,249 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,249 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,249 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,250 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,250 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,250 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,250 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,250 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,251 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,251 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,251 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,251 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,251 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,251 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,252 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,252 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,252 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,252 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,252 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,253 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,253 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,254 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,254 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,254 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,254 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,254 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,255 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,255 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,255 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,255 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,255 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,257 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,257 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,259 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,259 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,259 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,259 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,259 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,261 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,262 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,262 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,262 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,262 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,264 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,265 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,265 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,265 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,265 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,267 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,268 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,268 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,268 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,268 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,270 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,271 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,271 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,271 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,271 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,274 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,275 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,275 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,275 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,275 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,277 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,278 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,278 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,280 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,281 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,281 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,281 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,283 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,284 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,284 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,284 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,284 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,284 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,286 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,287 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,288 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,290 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,291 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,291 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,291 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,291 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,291 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,293 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,294 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,294 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,294 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,294 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,294 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:33:19,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-18 11:33:19,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:33:19,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:33:19,297 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:33:19,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:33:19,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:33:19,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:33:19,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:33:19,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:33:19,300 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-04-18 11:33:19,300 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-04-18 11:33:19,325 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-04-18 11:33:19,325 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 11:33:19,327 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-04-18 11:33:19,333 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-04-18 11:33:19,354 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-04-18 11:33:19,354 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 11:33:19,356 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-04-18 11:33:19,363 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-04-18 11:33:19,364 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:33:21,200 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-04-18 11:33:21,488 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-04-18 11:33:21,488 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-04-18 11:33:21,488 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-04-18 11:33:23,013 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-04-18 11:33:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-04-18 11:33:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:33:23,014 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:23,014 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 11:33:23,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:23,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-04-18 11:33:23,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:23,015 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2106955297] [2020-04-18 11:33:23,015 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:23,015 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:33:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-04-18 11:33:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 11:33:23,015 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:23,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 2 times [2020-04-18 11:33:23,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:23,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861824660] [2020-04-18 11:33:23,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:23,022 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 11:33:23,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861824660] [2020-04-18 11:33:23,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:23,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:33:23,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:23,023 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:23,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-04-18 11:33:23,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:23,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:23,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:23,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:23,025 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2020-04-18 11:33:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:23,025 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2020-04-18 11:33:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 3 transitions. [2020-04-18 11:33:23,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:23,026 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2106955297] [2020-04-18 11:33:23,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:23,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:33:23,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2106955297] [2020-04-18 11:33:23,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:33:23,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:23,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:23,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:23,027 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-04-18 11:33:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:23,156 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-04-18 11:33:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:33:23,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 11:33:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:23,206 INFO L225 Difference]: With dead ends: 17885 [2020-04-18 11:33:23,206 INFO L226 Difference]: Without dead ends: 16791 [2020-04-18 11:33:23,206 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-04-18 11:33:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-04-18 11:33:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-04-18 11:33:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-04-18 11:33:23,971 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-04-18 11:33:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:23,971 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-04-18 11:33:23,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:33:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-04-18 11:33:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:33:23,971 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:23,972 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:23,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-04-18 11:33:23,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:23,972 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2113146211] [2020-04-18 11:33:23,973 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:23,973 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:33:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:33:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:33:23,973 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:23,974 INFO L82 PathProgramCache]: Analyzing trace with hash -838148292, now seen corresponding path program 2 times [2020-04-18 11:33:23,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:23,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042339232] [2020-04-18 11:33:23,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:23,981 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 11:33:23,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042339232] [2020-04-18 11:33:23,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:23,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:23,981 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:23,982 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:23,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:33:23,982 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:23,984 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:23,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:23,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:23,985 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 11:33:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:23,987 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:33:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:33:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:33:23,988 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:23,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:23,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 3 times [2020-04-18 11:33:23,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:23,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270962186] [2020-04-18 11:33:23,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:24,015 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 11:33:24,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270962186] [2020-04-18 11:33:24,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:24,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:33:24,016 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:24,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:24,016 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:33:24,017 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:24,023 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:24,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:24,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:24,024 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2020-04-18 11:33:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:24,036 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-04-18 11:33:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-04-18 11:33:24,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:24,036 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2113146211] [2020-04-18 11:33:24,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:24,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:33:24,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2113146211] [2020-04-18 11:33:24,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:33:24,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:24,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:24,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:24,037 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-04-18 11:33:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:24,249 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-04-18 11:33:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:33:24,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:33:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:24,340 INFO L225 Difference]: With dead ends: 30985 [2020-04-18 11:33:24,340 INFO L226 Difference]: Without dead ends: 30977 [2020-04-18 11:33:24,340 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-04-18 11:33:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-04-18 11:33:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-04-18 11:33:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-04-18 11:33:27,169 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-04-18 11:33:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:27,169 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-04-18 11:33:27,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:33:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-04-18 11:33:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:33:27,170 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:27,170 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:27,170 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-04-18 11:33:27,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:27,171 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [371414010] [2020-04-18 11:33:27,171 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:27,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:33:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:33:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:33:27,172 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:27,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1465956375, now seen corresponding path program 2 times [2020-04-18 11:33:27,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:27,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404759132] [2020-04-18 11:33:27,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:33:27,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404759132] [2020-04-18 11:33:27,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:27,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:27,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:27,183 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:27,184 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 11:33:27,184 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:27,186 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:27,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:27,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:27,186 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:33:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:27,188 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:33:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:33:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:33:27,188 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:27,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:27,189 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 3 times [2020-04-18 11:33:27,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:27,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952764819] [2020-04-18 11:33:27,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:33:27,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952764819] [2020-04-18 11:33:27,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:27,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:33:27,206 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:27,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:27,207 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 11:33:27,207 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:27,214 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:27,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:27,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:27,214 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 5 states. [2020-04-18 11:33:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:27,231 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-04-18 11:33:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-04-18 11:33:27,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:27,231 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [371414010] [2020-04-18 11:33:27,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:27,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:33:27,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [371414010] [2020-04-18 11:33:27,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:33:27,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:27,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:27,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:27,232 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-04-18 11:33:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:27,493 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-04-18 11:33:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:33:27,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 11:33:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:27,612 INFO L225 Difference]: With dead ends: 36296 [2020-04-18 11:33:27,612 INFO L226 Difference]: Without dead ends: 36280 [2020-04-18 11:33:27,612 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-04-18 11:33:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-04-18 11:33:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-04-18 11:33:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-04-18 11:33:28,777 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-04-18 11:33:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:28,777 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-04-18 11:33:28,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:33:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-04-18 11:33:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:33:28,777 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:28,777 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:28,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-04-18 11:33:28,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:28,778 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1096758865] [2020-04-18 11:33:28,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:28,779 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 99 transitions. [2020-04-18 11:33:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-04-18 11:33:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:33:28,780 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash 835890241, now seen corresponding path program 2 times [2020-04-18 11:33:28,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:28,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235922594] [2020-04-18 11:33:28,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:33:28,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235922594] [2020-04-18 11:33:28,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:28,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:28,790 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:28,791 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:28,793 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 61 transitions. [2020-04-18 11:33:28,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:28,796 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:28,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:28,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:28,797 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-04-18 11:33:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:28,803 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-04-18 11:33:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-04-18 11:33:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:33:28,804 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:28,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2123648201, now seen corresponding path program 3 times [2020-04-18 11:33:28,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:28,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421982063] [2020-04-18 11:33:28,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:33:28,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421982063] [2020-04-18 11:33:28,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841762832] [2020-04-18 11:33:28,826 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:28,909 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:33:28,909 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:28,910 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:28,910 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:33:28,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:28,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:33:28,921 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:28,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:28,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 41 transitions. [2020-04-18 11:33:28,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:28,981 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:28,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:28,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:33:28,982 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 11 states. [2020-04-18 11:33:29,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:29,064 INFO L93 Difference]: Finished difference Result 68 states and 112 transitions. [2020-04-18 11:33:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2020-04-18 11:33:29,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:33:29,065 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:29,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:29,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 4 times [2020-04-18 11:33:29,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:29,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666593409] [2020-04-18 11:33:29,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:33:29,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666593409] [2020-04-18 11:33:29,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977880951] [2020-04-18 11:33:29,095 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:29,182 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:29,182 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:29,183 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:29,183 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:33:29,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:29,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:29,197 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:29,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:29,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-04-18 11:33:29,200 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:29,220 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:33:29,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:29,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:33:29,220 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand 11 states. [2020-04-18 11:33:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:29,327 INFO L93 Difference]: Finished difference Result 69 states and 112 transitions. [2020-04-18 11:33:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 112 transitions. [2020-04-18 11:33:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:33:29,328 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:29,328 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 5 times [2020-04-18 11:33:29,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:29,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634833092] [2020-04-18 11:33:29,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 11:33:29,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634833092] [2020-04-18 11:33:29,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:29,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:29,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:29,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:29,358 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 11:33:29,359 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:29,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:29,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:33:29,375 INFO L87 Difference]: Start difference. First operand 69 states and 112 transitions. Second operand 7 states. [2020-04-18 11:33:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:29,476 INFO L93 Difference]: Finished difference Result 72 states and 115 transitions. [2020-04-18 11:33:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions. [2020-04-18 11:33:29,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:29,477 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1096758865] [2020-04-18 11:33:29,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:29,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:33:29,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1096758865] [2020-04-18 11:33:29,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:33:29,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:29,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:33:29,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:33:29,478 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 15 states. [2020-04-18 11:33:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:30,570 INFO L93 Difference]: Finished difference Result 65163 states and 295360 transitions. [2020-04-18 11:33:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:33:30,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-04-18 11:33:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:30,761 INFO L225 Difference]: With dead ends: 65163 [2020-04-18 11:33:30,761 INFO L226 Difference]: Without dead ends: 65130 [2020-04-18 11:33:30,761 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=579, Invalid=1871, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 11:33:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65130 states. [2020-04-18 11:33:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65130 to 23109. [2020-04-18 11:33:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-04-18 11:33:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-04-18 11:33:34,524 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-04-18 11:33:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:34,525 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-04-18 11:33:34,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:33:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-04-18 11:33:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:33:34,525 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:34,525 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:34,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:34,926 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:34,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-04-18 11:33:34,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:34,927 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1355387067] [2020-04-18 11:33:34,928 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:34,929 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:33:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:33:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:33:34,930 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1298525542, now seen corresponding path program 2 times [2020-04-18 11:33:34,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:34,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010270640] [2020-04-18 11:33:34,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:34,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010270640] [2020-04-18 11:33:34,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:34,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:34,942 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:34,942 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:34,944 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 43 transitions. [2020-04-18 11:33:34,944 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:34,946 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:34,947 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:33:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:34,949 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:33:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:33:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:33:34,950 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:34,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 3 times [2020-04-18 11:33:34,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:34,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905202085] [2020-04-18 11:33:34,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:34,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905202085] [2020-04-18 11:33:34,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:34,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:33:34,969 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:34,969 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:34,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-04-18 11:33:34,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:34,978 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:34,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:34,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:34,979 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand 5 states. [2020-04-18 11:33:34,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:34,995 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-04-18 11:33:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-04-18 11:33:34,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:34,996 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1355387067] [2020-04-18 11:33:34,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:34,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:33:34,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1355387067] [2020-04-18 11:33:34,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:33:34,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:34,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:34,996 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-04-18 11:33:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:35,309 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-04-18 11:33:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:33:35,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 11:33:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:35,437 INFO L225 Difference]: With dead ends: 41885 [2020-04-18 11:33:35,437 INFO L226 Difference]: Without dead ends: 41856 [2020-04-18 11:33:35,438 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:33:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-04-18 11:33:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-04-18 11:33:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-04-18 11:33:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-04-18 11:33:37,475 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-04-18 11:33:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:37,476 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-04-18 11:33:37,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:33:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-04-18 11:33:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:37,476 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:37,477 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:37,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-04-18 11:33:37,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:37,477 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [681806999] [2020-04-18 11:33:37,478 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 151 transitions. [2020-04-18 11:33:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:33:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:37,479 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2126269866, now seen corresponding path program 2 times [2020-04-18 11:33:37,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380179528] [2020-04-18 11:33:37,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:37,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380179528] [2020-04-18 11:33:37,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:37,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:37,487 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,488 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,493 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 94 transitions. [2020-04-18 11:33:37,493 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,495 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:37,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:37,496 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:33:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:37,503 INFO L93 Difference]: Finished difference Result 89 states and 163 transitions. [2020-04-18 11:33:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 163 transitions. [2020-04-18 11:33:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:37,504 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,504 INFO L82 PathProgramCache]: Analyzing trace with hash 269417922, now seen corresponding path program 3 times [2020-04-18 11:33:37,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679148883] [2020-04-18 11:33:37,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:37,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679148883] [2020-04-18 11:33:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:37,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:37,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,531 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-04-18 11:33:37,531 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,539 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:37,540 INFO L87 Difference]: Start difference. First operand 89 states and 163 transitions. Second operand 5 states. [2020-04-18 11:33:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:37,572 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-04-18 11:33:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-04-18 11:33:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:37,573 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash 269416872, now seen corresponding path program 4 times [2020-04-18 11:33:37,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711860673] [2020-04-18 11:33:37,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:37,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711860673] [2020-04-18 11:33:37,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048205497] [2020-04-18 11:33:37,592 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 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:37,683 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:37,683 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:37,684 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:37,684 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:37,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:37,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:33:37,696 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,697 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-04-18 11:33:37,701 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,721 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:37,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:33:37,722 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 7 states. [2020-04-18 11:33:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:37,769 INFO L93 Difference]: Finished difference Result 103 states and 172 transitions. [2020-04-18 11:33:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 172 transitions. [2020-04-18 11:33:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:37,770 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 5 times [2020-04-18 11:33:37,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:37,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285888914] [2020-04-18 11:33:37,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:37,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285888914] [2020-04-18 11:33:37,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479269774] [2020-04-18 11:33:37,800 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:37,889 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:33:37,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:37,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:37,891 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:37,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:37,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:37,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:37,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:37,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-04-18 11:33:37,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:37,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:37,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:33:37,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:33:37,973 INFO L87 Difference]: Start difference. First operand 103 states and 172 transitions. Second operand 12 states. [2020-04-18 11:33:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:38,083 INFO L93 Difference]: Finished difference Result 103 states and 172 transitions. [2020-04-18 11:33:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 172 transitions. [2020-04-18 11:33:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:38,083 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:33:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:38,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 6 times [2020-04-18 11:33:38,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:38,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065544142] [2020-04-18 11:33:38,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:38,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065544142] [2020-04-18 11:33:38,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:38,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:38,127 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:38,128 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:38,130 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:33:38,130 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:38,138 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:38,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:33:38,138 INFO L87 Difference]: Start difference. First operand 103 states and 172 transitions. Second operand 7 states. [2020-04-18 11:33:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:38,223 INFO L93 Difference]: Finished difference Result 103 states and 172 transitions. [2020-04-18 11:33:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 172 transitions. [2020-04-18 11:33:38,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:38,224 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [681806999] [2020-04-18 11:33:38,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:38,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:33:38,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [681806999] [2020-04-18 11:33:38,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:33:38,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:38,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:33:38,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:33:38,226 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 14 states. [2020-04-18 11:33:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:39,180 INFO L93 Difference]: Finished difference Result 83516 states and 377086 transitions. [2020-04-18 11:33:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:33:39,180 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-04-18 11:33:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:39,423 INFO L225 Difference]: With dead ends: 83516 [2020-04-18 11:33:39,423 INFO L226 Difference]: Without dead ends: 83431 [2020-04-18 11:33:39,424 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 11:33:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83431 states. [2020-04-18 11:33:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83431 to 28061. [2020-04-18 11:33:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-04-18 11:33:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-04-18 11:33:41,356 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-04-18 11:33:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:41,356 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-04-18 11:33:41,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:33:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-04-18 11:33:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:41,357 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:41,357 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:41,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:41,758 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:41,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-04-18 11:33:41,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:41,759 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [909109139] [2020-04-18 11:33:41,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:41,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-04-18 11:33:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:33:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:41,762 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1952477143, now seen corresponding path program 2 times [2020-04-18 11:33:41,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:41,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295495804] [2020-04-18 11:33:41,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:41,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295495804] [2020-04-18 11:33:41,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:41,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:41,771 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:41,772 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:41,774 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 45 transitions. [2020-04-18 11:33:41,774 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:41,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:41,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:41,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:41,776 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:33:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:41,783 INFO L93 Difference]: Finished difference Result 69 states and 119 transitions. [2020-04-18 11:33:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2020-04-18 11:33:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:41,783 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2138426399, now seen corresponding path program 3 times [2020-04-18 11:33:41,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:41,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017191648] [2020-04-18 11:33:41,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:41,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017191648] [2020-04-18 11:33:41,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:41,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:41,801 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:41,802 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:41,804 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 21 transitions. [2020-04-18 11:33:41,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:41,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:41,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:41,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:41,811 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand 5 states. [2020-04-18 11:33:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:43,921 INFO L93 Difference]: Finished difference Result 76 states and 124 transitions. [2020-04-18 11:33:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 124 transitions. [2020-04-18 11:33:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:43,922 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:43,922 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 4 times [2020-04-18 11:33:43,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:43,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806870623] [2020-04-18 11:33:43,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:43,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806870623] [2020-04-18 11:33:43,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:43,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:43,950 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:43,950 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:43,952 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-04-18 11:33:43,952 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:43,961 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:43,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:43,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:33:43,962 INFO L87 Difference]: Start difference. First operand 76 states and 124 transitions. Second operand 7 states. [2020-04-18 11:33:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:44,044 INFO L93 Difference]: Finished difference Result 77 states and 124 transitions. [2020-04-18 11:33:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 124 transitions. [2020-04-18 11:33:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:33:44,045 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:44,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 5 times [2020-04-18 11:33:44,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:44,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972582496] [2020-04-18 11:33:44,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:44,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972582496] [2020-04-18 11:33:44,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:44,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:33:44,075 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:44,075 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:44,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-04-18 11:33:44,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:44,140 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:44,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:33:44,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:33:44,141 INFO L87 Difference]: Start difference. First operand 77 states and 124 transitions. Second operand 11 states. [2020-04-18 11:33:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:44,269 INFO L93 Difference]: Finished difference Result 80 states and 127 transitions. [2020-04-18 11:33:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 127 transitions. [2020-04-18 11:33:44,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:44,269 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [909109139] [2020-04-18 11:33:44,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:44,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:33:44,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [909109139] [2020-04-18 11:33:44,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:33:44,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:44,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:33:44,271 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 13 states. [2020-04-18 11:33:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:45,460 INFO L93 Difference]: Finished difference Result 89447 states and 400291 transitions. [2020-04-18 11:33:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:33:45,461 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-04-18 11:33:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:33:45,743 INFO L225 Difference]: With dead ends: 89447 [2020-04-18 11:33:45,743 INFO L226 Difference]: Without dead ends: 89337 [2020-04-18 11:33:45,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 11:33:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89337 states. [2020-04-18 11:33:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89337 to 29094. [2020-04-18 11:33:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-04-18 11:33:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-04-18 11:33:47,752 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-04-18 11:33:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:33:47,752 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-04-18 11:33:47,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:33:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-04-18 11:33:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:47,753 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:33:47,753 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:33:47,754 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:33:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-04-18 11:33:47,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:33:47,754 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1251824478] [2020-04-18 11:33:47,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:47,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 405 transitions. [2020-04-18 11:33:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-04-18 11:33:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:47,759 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:33:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1059131539, now seen corresponding path program 2 times [2020-04-18 11:33:47,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:47,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260857238] [2020-04-18 11:33:47,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:47,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260857238] [2020-04-18 11:33:47,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:47,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:33:47,770 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:47,771 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:47,777 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 99 transitions. [2020-04-18 11:33:47,777 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:47,779 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:33:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:33:47,779 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-04-18 11:33:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:47,790 INFO L93 Difference]: Finished difference Result 203 states and 475 transitions. [2020-04-18 11:33:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 475 transitions. [2020-04-18 11:33:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:47,791 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:33:47,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1212625151, now seen corresponding path program 3 times [2020-04-18 11:33:47,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:47,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176808248] [2020-04-18 11:33:47,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:47,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176808248] [2020-04-18 11:33:47,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:47,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:33:47,818 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:47,819 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:47,824 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 46 transitions. [2020-04-18 11:33:47,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:47,841 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:47,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:33:47,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:33:47,841 INFO L87 Difference]: Start difference. First operand 203 states and 475 transitions. Second operand 5 states. [2020-04-18 11:33:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:47,891 INFO L93 Difference]: Finished difference Result 238 states and 528 transitions. [2020-04-18 11:33:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 528 transitions. [2020-04-18 11:33:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:47,892 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:33:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:47,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1211616101, now seen corresponding path program 4 times [2020-04-18 11:33:47,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:47,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652656120] [2020-04-18 11:33:47,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:48,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652656120] [2020-04-18 11:33:48,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956361549] [2020-04-18 11:33:48,175 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:48,264 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:33:48,264 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:48,265 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:33:48,266 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:48,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:48,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:33:48,277 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:48,277 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:48,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 49 transitions. [2020-04-18 11:33:48,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:48,298 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:48,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:48,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:33:48,298 INFO L87 Difference]: Start difference. First operand 238 states and 528 transitions. Second operand 7 states. [2020-04-18 11:33:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:48,375 INFO L93 Difference]: Finished difference Result 323 states and 649 transitions. [2020-04-18 11:33:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 649 transitions. [2020-04-18 11:33:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:48,377 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:33:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1211597771, now seen corresponding path program 5 times [2020-04-18 11:33:48,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:48,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022648376] [2020-04-18 11:33:48,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:48,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022648376] [2020-04-18 11:33:48,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616808340] [2020-04-18 11:33:48,405 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:48,503 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:33:48,503 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:48,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:48,505 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:48,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:48,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:33:48,517 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:48,518 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:48,522 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 45 transitions. [2020-04-18 11:33:48,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:48,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:33:48,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:48,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:33:48,535 INFO L87 Difference]: Start difference. First operand 323 states and 649 transitions. Second operand 9 states. [2020-04-18 11:33:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:48,745 INFO L93 Difference]: Finished difference Result 382 states and 708 transitions. [2020-04-18 11:33:48,745 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 708 transitions. [2020-04-18 11:33:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:48,746 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:33:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1212072191, now seen corresponding path program 6 times [2020-04-18 11:33:48,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:48,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998907358] [2020-04-18 11:33:48,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:48,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998907358] [2020-04-18 11:33:48,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:48,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:33:48,777 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:48,778 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:48,782 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 45 transitions. [2020-04-18 11:33:48,782 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:48,783 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:33:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:33:48,783 INFO L87 Difference]: Start difference. First operand 382 states and 708 transitions. Second operand 7 states. [2020-04-18 11:33:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:48,938 INFO L93 Difference]: Finished difference Result 452 states and 797 transitions. [2020-04-18 11:33:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 797 transitions. [2020-04-18 11:33:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:48,939 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:33:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1393043291, now seen corresponding path program 7 times [2020-04-18 11:33:48,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:48,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77019716] [2020-04-18 11:33:48,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:48,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77019716] [2020-04-18 11:33:48,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604951246] [2020-04-18 11:33:48,998 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:49,095 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:33:49,095 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:49,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:49,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:33:49,107 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:49,109 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:49,114 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:33:49,114 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:49,168 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:33:49,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:33:49,169 INFO L87 Difference]: Start difference. First operand 452 states and 797 transitions. Second operand 12 states. [2020-04-18 11:33:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:49,474 INFO L93 Difference]: Finished difference Result 467 states and 808 transitions. [2020-04-18 11:33:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 808 transitions. [2020-04-18 11:33:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:49,475 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:33:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:49,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 8 times [2020-04-18 11:33:49,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:49,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74859444] [2020-04-18 11:33:49,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:49,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74859444] [2020-04-18 11:33:49,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807858581] [2020-04-18 11:33:49,530 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 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:49,620 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:33:49,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:49,621 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:49,622 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:49,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:49,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:49,640 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:49,641 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:49,646 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:33:49,646 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:49,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:33:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=962, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:33:49,679 INFO L87 Difference]: Start difference. First operand 467 states and 808 transitions. Second operand 14 states. [2020-04-18 11:33:50,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:50,274 INFO L93 Difference]: Finished difference Result 467 states and 808 transitions. [2020-04-18 11:33:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 808 transitions. [2020-04-18 11:33:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:50,275 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:33:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:50,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 9 times [2020-04-18 11:33:50,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:50,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205445440] [2020-04-18 11:33:50,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:50,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205445440] [2020-04-18 11:33:50,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231580614] [2020-04-18 11:33:50,317 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:33:50,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 11:33:50,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:33:50,413 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:33:50,413 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:33:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 11:33:50,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:33:50,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:33:50,428 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:50,428 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:50,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-04-18 11:33:50,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:50,534 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:33:50,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 11:33:50,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=2327, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 11:33:50,535 INFO L87 Difference]: Start difference. First operand 467 states and 808 transitions. Second operand 18 states. [2020-04-18 11:33:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:51,290 INFO L93 Difference]: Finished difference Result 474 states and 813 transitions. [2020-04-18 11:33:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 813 transitions. [2020-04-18 11:33:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:51,292 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:33:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:51,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2073528999, now seen corresponding path program 10 times [2020-04-18 11:33:51,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:51,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028391101] [2020-04-18 11:33:51,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:51,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028391101] [2020-04-18 11:33:51,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:51,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:33:51,321 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:51,322 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:51,325 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 23 transitions. [2020-04-18 11:33:51,325 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:51,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:51,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:33:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=984, Invalid=3846, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 11:33:51,338 INFO L87 Difference]: Start difference. First operand 474 states and 813 transitions. Second operand 7 states. [2020-04-18 11:33:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:51,526 INFO L93 Difference]: Finished difference Result 489 states and 824 transitions. [2020-04-18 11:33:51,526 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 824 transitions. [2020-04-18 11:33:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:51,527 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:33:51,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:51,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 11 times [2020-04-18 11:33:51,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:51,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738265592] [2020-04-18 11:33:51,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:51,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738265592] [2020-04-18 11:33:51,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:51,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:51,584 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:51,585 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:51,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:33:51,588 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:51,588 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:51,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:51,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1097, Invalid=4603, Unknown=0, NotChecked=0, Total=5700 [2020-04-18 11:33:51,589 INFO L87 Difference]: Start difference. First operand 489 states and 824 transitions. Second operand 9 states. [2020-04-18 11:33:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:52,007 INFO L93 Difference]: Finished difference Result 489 states and 824 transitions. [2020-04-18 11:33:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 824 transitions. [2020-04-18 11:33:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:52,008 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:33:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:52,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 12 times [2020-04-18 11:33:52,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:52,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989341549] [2020-04-18 11:33:52,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:52,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989341549] [2020-04-18 11:33:52,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:52,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:52,051 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:52,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:52,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:33:52,055 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:52,069 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:33:52,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:33:52,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1437, Invalid=6395, Unknown=0, NotChecked=0, Total=7832 [2020-04-18 11:33:52,070 INFO L87 Difference]: Start difference. First operand 489 states and 824 transitions. Second operand 9 states. [2020-04-18 11:33:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:52,503 INFO L93 Difference]: Finished difference Result 496 states and 828 transitions. [2020-04-18 11:33:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2020-04-18 11:33:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:52,504 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:33:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:52,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 13 times [2020-04-18 11:33:52,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:52,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170663984] [2020-04-18 11:33:52,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:52,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170663984] [2020-04-18 11:33:52,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:52,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:52,573 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:52,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:52,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:33:52,579 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:52,682 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:33:52,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:33:52,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=9619, Unknown=0, NotChecked=0, Total=11556 [2020-04-18 11:33:52,684 INFO L87 Difference]: Start difference. First operand 496 states and 828 transitions. Second operand 17 states. [2020-04-18 11:33:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:53,484 INFO L93 Difference]: Finished difference Result 496 states and 828 transitions. [2020-04-18 11:33:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2020-04-18 11:33:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:33:53,485 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:33:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:33:53,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 14 times [2020-04-18 11:33:53,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:33:53,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021931501] [2020-04-18 11:33:53,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:33:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:33:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:33:53,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021931501] [2020-04-18 11:33:53,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:33:53,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:33:53,553 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:33:53,553 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:33:53,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-04-18 11:33:53,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:33:53,559 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:33:53,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:33:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2476, Invalid=13024, Unknown=0, NotChecked=0, Total=15500 [2020-04-18 11:33:53,560 INFO L87 Difference]: Start difference. First operand 496 states and 828 transitions. Second operand 13 states. [2020-04-18 11:33:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:33:54,209 INFO L93 Difference]: Finished difference Result 496 states and 828 transitions. [2020-04-18 11:33:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 828 transitions. [2020-04-18 11:33:54,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:33:54,210 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1251824478] [2020-04-18 11:33:54,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:33:54,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:33:54,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1251824478] [2020-04-18 11:33:54,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 11:33:54,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:33:54,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 11:33:54,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2990, Invalid=16470, Unknown=0, NotChecked=0, Total=19460 [2020-04-18 11:33:54,213 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 28 states. [2020-04-18 11:34:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:02,253 INFO L93 Difference]: Finished difference Result 184065 states and 731893 transitions. [2020-04-18 11:34:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2020-04-18 11:34:02,253 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 21 [2020-04-18 11:34:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:02,756 INFO L225 Difference]: With dead ends: 184065 [2020-04-18 11:34:02,756 INFO L226 Difference]: Without dead ends: 183845 [2020-04-18 11:34:02,762 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 477 SyntacticMatches, 3 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47924 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=13555, Invalid=94357, Unknown=0, NotChecked=0, Total=107912 [2020-04-18 11:34:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183845 states. [2020-04-18 11:34:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183845 to 25744. [2020-04-18 11:34:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-04-18 11:34:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-04-18 11:34:06,494 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-04-18 11:34:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:06,495 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-04-18 11:34:06,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 11:34:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-04-18 11:34:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:34:06,496 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:06,496 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:07,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:07,498 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:07,499 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-04-18 11:34:07,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:07,499 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [24431369] [2020-04-18 11:34:07,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:07,501 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-04-18 11:34:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 11:34:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:34:07,501 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:07,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2131721569, now seen corresponding path program 2 times [2020-04-18 11:34:07,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:07,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306756271] [2020-04-18 11:34:07,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:07,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306756271] [2020-04-18 11:34:07,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:07,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:07,510 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:07,511 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:07,513 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:34:07,513 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:07,515 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:07,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:07,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:07,516 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-04-18 11:34:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:07,518 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:34:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:34:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:34:07,519 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 3 times [2020-04-18 11:34:07,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:07,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488495168] [2020-04-18 11:34:07,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:07,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488495168] [2020-04-18 11:34:07,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:07,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:34:07,551 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:07,553 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:07,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-04-18 11:34:07,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:07,566 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:07,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:07,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:34:07,567 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 5 states. [2020-04-18 11:34:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:07,585 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:34:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-04-18 11:34:07,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:07,585 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [24431369] [2020-04-18 11:34:07,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:07,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:34:07,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [24431369] [2020-04-18 11:34:07,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:34:07,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:07,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:07,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:07,587 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-04-18 11:34:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:07,915 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-04-18 11:34:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:34:07,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:34:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:08,059 INFO L225 Difference]: With dead ends: 46463 [2020-04-18 11:34:08,059 INFO L226 Difference]: Without dead ends: 46417 [2020-04-18 11:34:08,059 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-04-18 11:34:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-04-18 11:34:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-04-18 11:34:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-04-18 11:34:09,869 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-04-18 11:34:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:09,869 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-04-18 11:34:09,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:34:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-04-18 11:34:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:09,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:09,871 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:09,871 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-04-18 11:34:09,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:09,871 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1012594656] [2020-04-18 11:34:09,872 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,873 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 203 transitions. [2020-04-18 11:34:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-18 11:34:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:09,874 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2086035311, now seen corresponding path program 2 times [2020-04-18 11:34:09,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014703583] [2020-04-18 11:34:09,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:09,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014703583] [2020-04-18 11:34:09,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:09,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:09,883 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:09,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,891 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 126 transitions. [2020-04-18 11:34:09,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:09,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:09,894 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-04-18 11:34:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:09,902 INFO L93 Difference]: Finished difference Result 117 states and 219 transitions. [2020-04-18 11:34:09,902 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 219 transitions. [2020-04-18 11:34:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:09,903 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:09,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1107229367, now seen corresponding path program 3 times [2020-04-18 11:34:09,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952985837] [2020-04-18 11:34:09,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:09,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952985837] [2020-04-18 11:34:09,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:09,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:34:09,922 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:09,923 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:09,928 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 52 transitions. [2020-04-18 11:34:09,928 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:09,936 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:34:09,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:09,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:34:09,936 INFO L87 Difference]: Start difference. First operand 117 states and 219 transitions. Second operand 5 states. [2020-04-18 11:34:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:09,972 INFO L93 Difference]: Finished difference Result 124 states and 224 transitions. [2020-04-18 11:34:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 224 transitions. [2020-04-18 11:34:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:09,973 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1107230417, now seen corresponding path program 4 times [2020-04-18 11:34:09,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:09,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974369574] [2020-04-18 11:34:09,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:09,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974369574] [2020-04-18 11:34:09,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148822544] [2020-04-18 11:34:09,994 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:10,085 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:10,086 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:10,086 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:10,087 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:10,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:10,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:34:10,099 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:10,100 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:10,105 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 52 transitions. [2020-04-18 11:34:10,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:10,125 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:34:10,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:10,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:34:10,126 INFO L87 Difference]: Start difference. First operand 124 states and 224 transitions. Second operand 7 states. [2020-04-18 11:34:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:10,178 INFO L93 Difference]: Finished difference Result 131 states and 228 transitions. [2020-04-18 11:34:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 228 transitions. [2020-04-18 11:34:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:10,179 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:10,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 5 times [2020-04-18 11:34:10,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:10,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940184463] [2020-04-18 11:34:10,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:10,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940184463] [2020-04-18 11:34:10,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883783322] [2020-04-18 11:34:10,221 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:10,305 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:10,305 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:10,306 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:10,307 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:10,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:10,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:10,322 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:10,324 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:10,331 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-04-18 11:34:10,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:10,408 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:10,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:34:10,409 INFO L87 Difference]: Start difference. First operand 131 states and 228 transitions. Second operand 13 states. [2020-04-18 11:34:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:10,530 INFO L93 Difference]: Finished difference Result 131 states and 228 transitions. [2020-04-18 11:34:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 228 transitions. [2020-04-18 11:34:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:10,531 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:34:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 6 times [2020-04-18 11:34:10,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:10,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494353764] [2020-04-18 11:34:10,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:10,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494353764] [2020-04-18 11:34:10,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:10,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:34:10,559 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:10,560 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:10,563 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:34:10,563 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:10,573 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:10,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:10,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:34:10,573 INFO L87 Difference]: Start difference. First operand 131 states and 228 transitions. Second operand 7 states. [2020-04-18 11:34:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:10,658 INFO L93 Difference]: Finished difference Result 131 states and 228 transitions. [2020-04-18 11:34:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 228 transitions. [2020-04-18 11:34:10,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:10,659 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1012594656] [2020-04-18 11:34:10,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:10,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:34:10,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1012594656] [2020-04-18 11:34:10,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:34:10,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:34:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:34:10,661 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 15 states. [2020-04-18 11:34:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:11,814 INFO L93 Difference]: Finished difference Result 94350 states and 432647 transitions. [2020-04-18 11:34:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:34:11,814 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2020-04-18 11:34:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:12,089 INFO L225 Difference]: With dead ends: 94350 [2020-04-18 11:34:12,089 INFO L226 Difference]: Without dead ends: 94208 [2020-04-18 11:34:12,089 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=436, Invalid=1204, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 11:34:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94208 states. [2020-04-18 11:34:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94208 to 32410. [2020-04-18 11:34:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32410 states. [2020-04-18 11:34:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32410 states to 32410 states and 173487 transitions. [2020-04-18 11:34:14,755 INFO L78 Accepts]: Start accepts. Automaton has 32410 states and 173487 transitions. Word has length 23 [2020-04-18 11:34:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:14,755 INFO L479 AbstractCegarLoop]: Abstraction has 32410 states and 173487 transitions. [2020-04-18 11:34:14,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:34:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32410 states and 173487 transitions. [2020-04-18 11:34:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:14,757 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:14,757 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:15,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:15,158 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:15,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-04-18 11:34:15,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:15,159 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [359188619] [2020-04-18 11:34:15,160 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:15,162 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 123 transitions. [2020-04-18 11:34:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 11:34:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:15,162 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:15,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1724453322, now seen corresponding path program 2 times [2020-04-18 11:34:15,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:15,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121647801] [2020-04-18 11:34:15,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:15,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121647801] [2020-04-18 11:34:15,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:15,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:15,171 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:15,172 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:15,176 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 85 transitions. [2020-04-18 11:34:15,176 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:15,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:15,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:15,179 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-04-18 11:34:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:15,184 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2020-04-18 11:34:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 131 transitions. [2020-04-18 11:34:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:15,184 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1118728608, now seen corresponding path program 3 times [2020-04-18 11:34:15,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:15,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657083430] [2020-04-18 11:34:15,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:15,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657083430] [2020-04-18 11:34:15,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541313020] [2020-04-18 11:34:15,206 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:15,290 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:34:15,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:15,291 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:15,292 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:15,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:15,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:34:15,302 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:15,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:15,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 49 transitions. [2020-04-18 11:34:15,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:15,323 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:34:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:15,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:15,324 INFO L87 Difference]: Start difference. First operand 77 states and 131 transitions. Second operand 7 states. [2020-04-18 11:34:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:15,369 INFO L93 Difference]: Finished difference Result 84 states and 136 transitions. [2020-04-18 11:34:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 136 transitions. [2020-04-18 11:34:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:15,370 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 4 times [2020-04-18 11:34:15,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:15,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472945090] [2020-04-18 11:34:15,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:15,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472945090] [2020-04-18 11:34:15,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950517696] [2020-04-18 11:34:15,405 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:15,499 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:15,499 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:15,500 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:15,500 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:15,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:15,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:15,515 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:15,515 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:15,519 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-04-18 11:34:15,519 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:15,529 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:34:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:34:15,530 INFO L87 Difference]: Start difference. First operand 84 states and 136 transitions. Second operand 9 states. [2020-04-18 11:34:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:15,617 INFO L93 Difference]: Finished difference Result 85 states and 136 transitions. [2020-04-18 11:34:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 136 transitions. [2020-04-18 11:34:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:15,617 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 5 times [2020-04-18 11:34:15,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:15,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121245806] [2020-04-18 11:34:15,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:15,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121245806] [2020-04-18 11:34:15,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:15,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:34:15,650 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:15,651 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:15,654 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:34:15,654 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:15,671 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:15,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:15,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:34:15,672 INFO L87 Difference]: Start difference. First operand 85 states and 136 transitions. Second operand 7 states. [2020-04-18 11:34:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:15,772 INFO L93 Difference]: Finished difference Result 88 states and 139 transitions. [2020-04-18 11:34:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 139 transitions. [2020-04-18 11:34:15,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:15,773 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [359188619] [2020-04-18 11:34:15,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:15,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:34:15,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [359188619] [2020-04-18 11:34:15,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:34:15,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:15,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:15,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:34:15,774 INFO L87 Difference]: Start difference. First operand 32410 states and 173487 transitions. Second operand 11 states. [2020-04-18 11:34:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:16,509 INFO L93 Difference]: Finished difference Result 89551 states and 421651 transitions. [2020-04-18 11:34:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:34:16,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-04-18 11:34:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:16,787 INFO L225 Difference]: With dead ends: 89551 [2020-04-18 11:34:16,787 INFO L226 Difference]: Without dead ends: 89454 [2020-04-18 11:34:16,787 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:34:18,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89454 states. [2020-04-18 11:34:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89454 to 34508. [2020-04-18 11:34:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-04-18 11:34:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-04-18 11:34:19,435 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-04-18 11:34:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:19,436 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-04-18 11:34:19,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:34:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-04-18 11:34:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:19,437 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:19,437 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:19,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:19,838 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-04-18 11:34:19,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:19,839 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [198321667] [2020-04-18 11:34:19,841 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:19,843 INFO L259 McrAutomatonBuilder]: Finished intersection with 84 states and 163 transitions. [2020-04-18 11:34:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-04-18 11:34:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:19,844 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash -114932514, now seen corresponding path program 2 times [2020-04-18 11:34:19,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:19,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108290318] [2020-04-18 11:34:19,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:19,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108290318] [2020-04-18 11:34:19,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:19,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:19,852 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:19,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:19,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 57 transitions. [2020-04-18 11:34:19,857 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:19,859 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:19,859 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-04-18 11:34:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:19,867 INFO L93 Difference]: Finished difference Result 97 states and 175 transitions. [2020-04-18 11:34:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 175 transitions. [2020-04-18 11:34:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:19,867 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:19,868 INFO L82 PathProgramCache]: Analyzing trace with hash -617737926, now seen corresponding path program 3 times [2020-04-18 11:34:19,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:19,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929255238] [2020-04-18 11:34:19,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:19,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929255238] [2020-04-18 11:34:19,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:19,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:34:19,897 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:19,898 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:19,902 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 25 transitions. [2020-04-18 11:34:19,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:19,910 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:19,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:19,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:34:19,911 INFO L87 Difference]: Start difference. First operand 97 states and 175 transitions. Second operand 5 states. [2020-04-18 11:34:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:19,941 INFO L93 Difference]: Finished difference Result 104 states and 180 transitions. [2020-04-18 11:34:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 180 transitions. [2020-04-18 11:34:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:19,942 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 4 times [2020-04-18 11:34:19,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:19,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083101834] [2020-04-18 11:34:19,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:19,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083101834] [2020-04-18 11:34:19,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:19,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:34:19,973 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:19,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:19,977 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-04-18 11:34:19,977 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:19,987 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:19,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:19,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:34:19,987 INFO L87 Difference]: Start difference. First operand 104 states and 180 transitions. Second operand 7 states. [2020-04-18 11:34:20,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:20,063 INFO L93 Difference]: Finished difference Result 105 states and 180 transitions. [2020-04-18 11:34:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 180 transitions. [2020-04-18 11:34:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:34:20,063 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:20,064 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 5 times [2020-04-18 11:34:20,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:20,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775839144] [2020-04-18 11:34:20,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:20,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775839144] [2020-04-18 11:34:20,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:20,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:34:20,094 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:20,095 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:20,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-04-18 11:34:20,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:20,228 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:34:20,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:20,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:34:20,229 INFO L87 Difference]: Start difference. First operand 105 states and 180 transitions. Second operand 13 states. [2020-04-18 11:34:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:20,373 INFO L93 Difference]: Finished difference Result 108 states and 183 transitions. [2020-04-18 11:34:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 183 transitions. [2020-04-18 11:34:20,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:20,374 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [198321667] [2020-04-18 11:34:20,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:20,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:34:20,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [198321667] [2020-04-18 11:34:20,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:34:20,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:20,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:34:20,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:34:20,376 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 15 states. [2020-04-18 11:34:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:22,292 INFO L93 Difference]: Finished difference Result 107380 states and 487761 transitions. [2020-04-18 11:34:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:34:22,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2020-04-18 11:34:22,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:22,637 INFO L225 Difference]: With dead ends: 107380 [2020-04-18 11:34:22,637 INFO L226 Difference]: Without dead ends: 107189 [2020-04-18 11:34:22,637 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=585, Invalid=1767, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 11:34:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107189 states. [2020-04-18 11:34:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107189 to 37062. [2020-04-18 11:34:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-04-18 11:34:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-04-18 11:34:25,067 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-04-18 11:34:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:25,067 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-04-18 11:34:25,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:34:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-04-18 11:34:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:25,070 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:25,070 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:25,070 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-04-18 11:34:25,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:25,071 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1797615597] [2020-04-18 11:34:25,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:25,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 457 transitions. [2020-04-18 11:34:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-04-18 11:34:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:25,075 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:25,076 INFO L82 PathProgramCache]: Analyzing trace with hash 574724282, now seen corresponding path program 2 times [2020-04-18 11:34:25,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:25,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219804965] [2020-04-18 11:34:25,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:25,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219804965] [2020-04-18 11:34:25,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:25,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:25,084 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:25,086 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:25,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 203 transitions. [2020-04-18 11:34:25,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:25,101 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:25,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:25,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:25,102 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-04-18 11:34:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:25,112 INFO L93 Difference]: Finished difference Result 231 states and 531 transitions. [2020-04-18 11:34:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 531 transitions. [2020-04-18 11:34:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:25,113 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:25,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:25,113 INFO L82 PathProgramCache]: Analyzing trace with hash -899589434, now seen corresponding path program 3 times [2020-04-18 11:34:25,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:25,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141922730] [2020-04-18 11:34:25,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:25,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141922730] [2020-04-18 11:34:25,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789245648] [2020-04-18 11:34:25,133 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:25,703 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:34:25,704 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:25,704 INFO L264 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:25,705 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:25,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:25,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:34:25,716 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:25,718 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:25,726 INFO L259 McrAutomatonBuilder]: Finished intersection with 73 states and 121 transitions. [2020-04-18 11:34:25,726 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:25,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:34:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:25,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:34:25,743 INFO L87 Difference]: Start difference. First operand 231 states and 531 transitions. Second operand 7 states. [2020-04-18 11:34:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:25,819 INFO L93 Difference]: Finished difference Result 294 states and 632 transitions. [2020-04-18 11:34:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 632 transitions. [2020-04-18 11:34:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:25,820 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash 542684702, now seen corresponding path program 4 times [2020-04-18 11:34:25,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:25,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276951997] [2020-04-18 11:34:25,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:25,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276951997] [2020-04-18 11:34:25,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910785029] [2020-04-18 11:34:25,863 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:25,953 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:25,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:25,954 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:25,955 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:25,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:25,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:34:25,969 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:25,971 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:25,979 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 101 transitions. [2020-04-18 11:34:25,979 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:25,991 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:34:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:34:25,992 INFO L87 Difference]: Start difference. First operand 294 states and 632 transitions. Second operand 9 states. [2020-04-18 11:34:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:26,202 INFO L93 Difference]: Finished difference Result 336 states and 684 transitions. [2020-04-18 11:34:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 684 transitions. [2020-04-18 11:34:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:26,203 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:26,204 INFO L82 PathProgramCache]: Analyzing trace with hash 542683652, now seen corresponding path program 5 times [2020-04-18 11:34:26,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:26,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533677812] [2020-04-18 11:34:26,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:26,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533677812] [2020-04-18 11:34:26,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025711033] [2020-04-18 11:34:26,224 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:26,314 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:26,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:26,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:26,315 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:26,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:26,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:34:26,327 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:26,328 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:26,337 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 110 transitions. [2020-04-18 11:34:26,337 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:26,414 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 11:34:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:34:26,414 INFO L87 Difference]: Start difference. First operand 336 states and 684 transitions. Second operand 11 states. [2020-04-18 11:34:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:26,557 INFO L93 Difference]: Finished difference Result 434 states and 804 transitions. [2020-04-18 11:34:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 804 transitions. [2020-04-18 11:34:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:26,558 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:34:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 543336512, now seen corresponding path program 6 times [2020-04-18 11:34:26,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:26,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091218393] [2020-04-18 11:34:26,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:26,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091218393] [2020-04-18 11:34:26,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419964292] [2020-04-18 11:34:26,601 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:26,694 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:34:26,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:26,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:26,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:26,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:26,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:26,711 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:26,712 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:26,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 101 transitions. [2020-04-18 11:34:26,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:26,725 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:34:26,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:34:26,726 INFO L87 Difference]: Start difference. First operand 434 states and 804 transitions. Second operand 11 states. [2020-04-18 11:34:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:26,966 INFO L93 Difference]: Finished difference Result 480 states and 853 transitions. [2020-04-18 11:34:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 853 transitions. [2020-04-18 11:34:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:26,967 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:34:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1103270398, now seen corresponding path program 7 times [2020-04-18 11:34:26,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:26,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393407090] [2020-04-18 11:34:26,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:27,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393407090] [2020-04-18 11:34:27,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:27,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:34:27,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:27,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:27,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:34:27,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:27,056 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:34:27,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:27,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:34:27,057 INFO L87 Difference]: Start difference. First operand 480 states and 853 transitions. Second operand 7 states. [2020-04-18 11:34:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:27,317 INFO L93 Difference]: Finished difference Result 499 states and 867 transitions. [2020-04-18 11:34:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 867 transitions. [2020-04-18 11:34:27,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:27,318 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:34:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1103458138, now seen corresponding path program 8 times [2020-04-18 11:34:27,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:27,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655639425] [2020-04-18 11:34:27,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:27,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655639425] [2020-04-18 11:34:27,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633575568] [2020-04-18 11:34:27,370 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:27,517 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:34:27,517 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:27,518 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:27,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:27,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:27,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:27,545 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:27,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:27,560 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:34:27,560 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:27,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:34:27,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:27,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:34:27,563 INFO L87 Difference]: Start difference. First operand 499 states and 867 transitions. Second operand 9 states. [2020-04-18 11:34:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:27,785 INFO L93 Difference]: Finished difference Result 510 states and 873 transitions. [2020-04-18 11:34:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 873 transitions. [2020-04-18 11:34:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:27,785 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:34:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 9 times [2020-04-18 11:34:27,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:27,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046734715] [2020-04-18 11:34:27,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:27,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046734715] [2020-04-18 11:34:27,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62761127] [2020-04-18 11:34:27,827 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:27,919 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 11:34:27,919 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:27,920 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:27,921 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:27,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:27,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:27,936 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:27,937 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:27,944 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:34:27,944 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:28,026 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:34:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1728, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 11:34:28,027 INFO L87 Difference]: Start difference. First operand 510 states and 873 transitions. Second operand 15 states. [2020-04-18 11:34:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:28,706 INFO L93 Difference]: Finished difference Result 510 states and 873 transitions. [2020-04-18 11:34:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 873 transitions. [2020-04-18 11:34:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:28,707 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:34:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 10 times [2020-04-18 11:34:28,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:28,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952726897] [2020-04-18 11:34:28,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:28,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952726897] [2020-04-18 11:34:28,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734245467] [2020-04-18 11:34:28,747 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 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:28,841 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:28,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:28,842 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:28,843 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:28,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:28,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:28,857 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:28,858 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:28,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:34:28,867 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:29,006 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 11:34:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:34:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=3451, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 11:34:29,008 INFO L87 Difference]: Start difference. First operand 510 states and 873 transitions. Second operand 19 states. [2020-04-18 11:34:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:29,838 INFO L93 Difference]: Finished difference Result 510 states and 873 transitions. [2020-04-18 11:34:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 873 transitions. [2020-04-18 11:34:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:29,839 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:34:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1848455064, now seen corresponding path program 11 times [2020-04-18 11:34:29,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:29,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127536593] [2020-04-18 11:34:29,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:29,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127536593] [2020-04-18 11:34:29,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775280080] [2020-04-18 11:34:29,870 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:29,965 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:29,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:29,966 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:29,967 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:29,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:29,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:29,978 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:29,980 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:29,986 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 54 transitions. [2020-04-18 11:34:29,986 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:30,001 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:34:30,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1201, Invalid=5279, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 11:34:30,002 INFO L87 Difference]: Start difference. First operand 510 states and 873 transitions. Second operand 9 states. [2020-04-18 11:34:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:30,234 INFO L93 Difference]: Finished difference Result 525 states and 884 transitions. [2020-04-18 11:34:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 884 transitions. [2020-04-18 11:34:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:30,235 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:34:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 12 times [2020-04-18 11:34:30,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:30,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106729656] [2020-04-18 11:34:30,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:30,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106729656] [2020-04-18 11:34:30,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367730256] [2020-04-18 11:34:30,310 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:30,431 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:34:30,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:30,432 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:30,434 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:30,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:30,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:30,475 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:30,477 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:30,486 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:34:30,486 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:30,488 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:34:30,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:30,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=6153, Unknown=0, NotChecked=0, Total=7482 [2020-04-18 11:34:30,489 INFO L87 Difference]: Start difference. First operand 525 states and 884 transitions. Second operand 13 states. [2020-04-18 11:34:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:31,039 INFO L93 Difference]: Finished difference Result 525 states and 884 transitions. [2020-04-18 11:34:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 884 transitions. [2020-04-18 11:34:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:31,040 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:34:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 13 times [2020-04-18 11:34:31,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:31,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475436517] [2020-04-18 11:34:31,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:31,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475436517] [2020-04-18 11:34:31,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609020051] [2020-04-18 11:34:31,082 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:31,174 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:31,175 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:34:31,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:31,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:31,189 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:31,190 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:31,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:34:31,195 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:31,212 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:34:31,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:31,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1698, Invalid=8202, Unknown=0, NotChecked=0, Total=9900 [2020-04-18 11:34:31,213 INFO L87 Difference]: Start difference. First operand 525 states and 884 transitions. Second operand 11 states. [2020-04-18 11:34:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:31,739 INFO L93 Difference]: Finished difference Result 532 states and 888 transitions. [2020-04-18 11:34:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 888 transitions. [2020-04-18 11:34:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:31,740 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:34:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 14 times [2020-04-18 11:34:31,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:31,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993643077] [2020-04-18 11:34:31,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:31,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993643077] [2020-04-18 11:34:31,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:31,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:31,786 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:31,788 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:31,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:31,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:31,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:31,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:31,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2105, Invalid=10777, Unknown=0, NotChecked=0, Total=12882 [2020-04-18 11:34:31,794 INFO L87 Difference]: Start difference. First operand 532 states and 888 transitions. Second operand 9 states. [2020-04-18 11:34:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:32,290 INFO L93 Difference]: Finished difference Result 532 states and 888 transitions. [2020-04-18 11:34:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 888 transitions. [2020-04-18 11:34:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:32,292 INFO L105 Mcr]: ---- MCR iteration 13 ---- [2020-04-18 11:34:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:32,292 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 15 times [2020-04-18 11:34:32,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:32,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784330775] [2020-04-18 11:34:32,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:32,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784330775] [2020-04-18 11:34:32,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:32,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:32,376 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:32,377 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:32,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:32,383 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:32,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:32,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2552, Invalid=13960, Unknown=0, NotChecked=0, Total=16512 [2020-04-18 11:34:32,387 INFO L87 Difference]: Start difference. First operand 532 states and 888 transitions. Second operand 9 states. [2020-04-18 11:34:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:32,832 INFO L93 Difference]: Finished difference Result 532 states and 888 transitions. [2020-04-18 11:34:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 888 transitions. [2020-04-18 11:34:32,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:32,834 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1797615597] [2020-04-18 11:34:32,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:32,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:34:32,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1797615597] [2020-04-18 11:34:32,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 11:34:32,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:32,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 11:34:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2953, Invalid=16787, Unknown=0, NotChecked=0, Total=19740 [2020-04-18 11:34:32,837 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 28 states. [2020-04-18 11:34:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:39,074 INFO L93 Difference]: Finished difference Result 181501 states and 778700 transitions. [2020-04-18 11:34:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 11:34:39,074 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 25 [2020-04-18 11:34:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:34:39,622 INFO L225 Difference]: With dead ends: 181501 [2020-04-18 11:34:39,622 INFO L226 Difference]: Without dead ends: 181305 [2020-04-18 11:34:39,626 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 715 SyntacticMatches, 4 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26267 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8983, Invalid=55279, Unknown=0, NotChecked=0, Total=64262 [2020-04-18 11:34:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181305 states. [2020-04-18 11:34:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181305 to 33875. [2020-04-18 11:34:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33875 states. [2020-04-18 11:34:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33875 states to 33875 states and 181202 transitions. [2020-04-18 11:34:47,578 INFO L78 Accepts]: Start accepts. Automaton has 33875 states and 181202 transitions. Word has length 25 [2020-04-18 11:34:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:34:47,578 INFO L479 AbstractCegarLoop]: Abstraction has 33875 states and 181202 transitions. [2020-04-18 11:34:47,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 11:34:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 33875 states and 181202 transitions. [2020-04-18 11:34:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:47,581 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:34:47,581 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:34:49,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:49,587 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:34:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:49,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-04-18 11:34:49,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:34:49,589 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1357419352] [2020-04-18 11:34:49,590 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:49,594 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 609 transitions. [2020-04-18 11:34:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-04-18 11:34:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:49,596 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:34:49,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash -290393454, now seen corresponding path program 2 times [2020-04-18 11:34:49,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:49,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2365272] [2020-04-18 11:34:49,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:49,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2365272] [2020-04-18 11:34:49,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:49,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:34:49,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:49,607 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:49,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 129 states and 275 transitions. [2020-04-18 11:34:49,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:49,624 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:34:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:34:49,625 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 3 states. [2020-04-18 11:34:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:49,637 INFO L93 Difference]: Finished difference Result 295 states and 715 transitions. [2020-04-18 11:34:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 715 transitions. [2020-04-18 11:34:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:49,638 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:34:49,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:49,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1948435474, now seen corresponding path program 3 times [2020-04-18 11:34:49,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:49,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689633319] [2020-04-18 11:34:49,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:49,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689633319] [2020-04-18 11:34:49,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:49,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:34:49,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:49,659 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:49,670 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 181 transitions. [2020-04-18 11:34:49,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:49,679 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 11:34:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:34:49,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:34:49,680 INFO L87 Difference]: Start difference. First operand 295 states and 715 transitions. Second operand 5 states. [2020-04-18 11:34:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:49,737 INFO L93 Difference]: Finished difference Result 386 states and 864 transitions. [2020-04-18 11:34:49,737 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 864 transitions. [2020-04-18 11:34:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:49,738 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:34:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash -506161338, now seen corresponding path program 4 times [2020-04-18 11:34:49,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:49,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808359610] [2020-04-18 11:34:49,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:49,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808359610] [2020-04-18 11:34:49,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904564434] [2020-04-18 11:34:49,770 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 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:49,859 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:49,859 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:49,860 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:49,861 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:49,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:49,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:34:49,875 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:49,876 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:49,887 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 145 transitions. [2020-04-18 11:34:49,887 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:49,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:34:49,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:49,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:34:49,936 INFO L87 Difference]: Start difference. First operand 386 states and 864 transitions. Second operand 11 states. [2020-04-18 11:34:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:50,185 INFO L93 Difference]: Finished difference Result 428 states and 916 transitions. [2020-04-18 11:34:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 916 transitions. [2020-04-18 11:34:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:50,186 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:34:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:50,187 INFO L82 PathProgramCache]: Analyzing trace with hash -506162388, now seen corresponding path program 5 times [2020-04-18 11:34:50,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:50,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831508652] [2020-04-18 11:34:50,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:50,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831508652] [2020-04-18 11:34:50,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268895705] [2020-04-18 11:34:50,205 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:50,296 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:50,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:50,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:34:50,298 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:50,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:50,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:34:50,310 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:50,312 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:50,324 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 162 transitions. [2020-04-18 11:34:50,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:50,465 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 11:34:50,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:50,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:34:50,466 INFO L87 Difference]: Start difference. First operand 428 states and 916 transitions. Second operand 13 states. [2020-04-18 11:34:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:50,650 INFO L93 Difference]: Finished difference Result 554 states and 1080 transitions. [2020-04-18 11:34:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1080 transitions. [2020-04-18 11:34:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:50,651 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:34:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:50,652 INFO L82 PathProgramCache]: Analyzing trace with hash -505509528, now seen corresponding path program 6 times [2020-04-18 11:34:50,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:50,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064917619] [2020-04-18 11:34:50,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:50,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064917619] [2020-04-18 11:34:50,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957780089] [2020-04-18 11:34:50,682 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:50,776 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 11:34:50,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:50,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:50,778 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:50,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:50,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:50,792 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:50,793 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:50,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 145 transitions. [2020-04-18 11:34:50,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:50,822 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 11:34:50,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:34:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:34:50,823 INFO L87 Difference]: Start difference. First operand 554 states and 1080 transitions. Second operand 12 states. [2020-04-18 11:34:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:51,119 INFO L93 Difference]: Finished difference Result 600 states and 1129 transitions. [2020-04-18 11:34:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1129 transitions. [2020-04-18 11:34:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:51,121 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:34:51,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:51,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1103954630, now seen corresponding path program 7 times [2020-04-18 11:34:51,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:51,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171841241] [2020-04-18 11:34:51,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:51,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171841241] [2020-04-18 11:34:51,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:34:51,176 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:51,178 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:51,187 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:34:51,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:51,219 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:34:51,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:34:51,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:34:51,220 INFO L87 Difference]: Start difference. First operand 600 states and 1129 transitions. Second operand 7 states. [2020-04-18 11:34:51,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:51,430 INFO L93 Difference]: Finished difference Result 619 states and 1143 transitions. [2020-04-18 11:34:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1143 transitions. [2020-04-18 11:34:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:51,431 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:34:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1103480210, now seen corresponding path program 8 times [2020-04-18 11:34:51,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:51,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228347522] [2020-04-18 11:34:51,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:51,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228347522] [2020-04-18 11:34:51,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718278668] [2020-04-18 11:34:51,461 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 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:51,555 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:34:51,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:51,556 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:51,556 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:51,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:51,568 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:51,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:51,576 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 57 transitions. [2020-04-18 11:34:51,576 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:51,577 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:34:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1464, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:34:51,578 INFO L87 Difference]: Start difference. First operand 619 states and 1143 transitions. Second operand 9 states. [2020-04-18 11:34:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:51,789 INFO L93 Difference]: Finished difference Result 630 states and 1149 transitions. [2020-04-18 11:34:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1149 transitions. [2020-04-18 11:34:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:51,790 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:34:51,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:51,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 9 times [2020-04-18 11:34:51,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:51,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511129978] [2020-04-18 11:34:51,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:51,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511129978] [2020-04-18 11:34:51,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733128972] [2020-04-18 11:34:51,842 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:51,934 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 11:34:51,934 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:51,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:51,936 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:51,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:51,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:51,952 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:51,953 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:51,960 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:34:51,961 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:52,060 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:34:52,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 11:34:52,062 INFO L87 Difference]: Start difference. First operand 630 states and 1149 transitions. Second operand 15 states. [2020-04-18 11:34:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:52,739 INFO L93 Difference]: Finished difference Result 630 states and 1149 transitions. [2020-04-18 11:34:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1149 transitions. [2020-04-18 11:34:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:52,741 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:34:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 10 times [2020-04-18 11:34:52,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:52,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529474334] [2020-04-18 11:34:52,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:52,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529474334] [2020-04-18 11:34:52,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387802034] [2020-04-18 11:34:52,783 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 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:52,875 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:34:52,875 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:52,876 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:52,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:52,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:52,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:52,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:52,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:52,916 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-04-18 11:34:52,917 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:53,155 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 11:34:53,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 11:34:53,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=4026, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 11:34:53,157 INFO L87 Difference]: Start difference. First operand 630 states and 1149 transitions. Second operand 21 states. [2020-04-18 11:34:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:54,054 INFO L93 Difference]: Finished difference Result 630 states and 1149 transitions. [2020-04-18 11:34:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1149 transitions. [2020-04-18 11:34:54,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:54,055 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:34:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:54,055 INFO L82 PathProgramCache]: Analyzing trace with hash -601001104, now seen corresponding path program 11 times [2020-04-18 11:34:54,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:54,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307749637] [2020-04-18 11:34:54,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:54,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307749637] [2020-04-18 11:34:54,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150355784] [2020-04-18 11:34:54,086 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:54,174 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:34:54,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:54,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:34:54,176 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:54,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:54,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:34:54,189 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:54,190 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:54,198 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 78 transitions. [2020-04-18 11:34:54,198 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:54,225 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:34:54,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:34:54,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1322, Invalid=5988, Unknown=0, NotChecked=0, Total=7310 [2020-04-18 11:34:54,227 INFO L87 Difference]: Start difference. First operand 630 states and 1149 transitions. Second operand 11 states. [2020-04-18 11:34:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:54,521 INFO L93 Difference]: Finished difference Result 645 states and 1160 transitions. [2020-04-18 11:34:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1160 transitions. [2020-04-18 11:34:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:54,522 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 11:34:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash -600348244, now seen corresponding path program 12 times [2020-04-18 11:34:54,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:54,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723101044] [2020-04-18 11:34:54,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:54,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723101044] [2020-04-18 11:34:54,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481964671] [2020-04-18 11:34:54,568 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:54,659 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:34:54,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:34:54,660 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:54,660 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:54,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:54,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:54,676 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:54,677 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:54,685 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:34:54,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:54,709 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 11:34:54,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:34:54,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1467, Invalid=6905, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 11:34:54,710 INFO L87 Difference]: Start difference. First operand 645 states and 1160 transitions. Second operand 16 states. [2020-04-18 11:34:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:55,404 INFO L93 Difference]: Finished difference Result 645 states and 1160 transitions. [2020-04-18 11:34:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1160 transitions. [2020-04-18 11:34:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:55,405 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 11:34:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash 667735448, now seen corresponding path program 13 times [2020-04-18 11:34:55,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:55,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143358996] [2020-04-18 11:34:55,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:55,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143358996] [2020-04-18 11:34:55,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119627340] [2020-04-18 11:34:55,445 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:34:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:55,539 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:34:55,540 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:34:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:34:55,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:34:55,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:34:55,553 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:55,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:55,561 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:34:55,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:56,085 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:34:56,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:34:56,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1867, Invalid=9053, Unknown=0, NotChecked=0, Total=10920 [2020-04-18 11:34:56,086 INFO L87 Difference]: Start difference. First operand 645 states and 1160 transitions. Second operand 13 states. [2020-04-18 11:34:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:56,690 INFO L93 Difference]: Finished difference Result 652 states and 1164 transitions. [2020-04-18 11:34:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1164 transitions. [2020-04-18 11:34:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:56,691 INFO L105 Mcr]: ---- MCR iteration 12 ---- [2020-04-18 11:34:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 14 times [2020-04-18 11:34:56,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:56,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548654707] [2020-04-18 11:34:56,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:56,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548654707] [2020-04-18 11:34:56,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:56,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:56,731 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:56,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:56,736 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:56,737 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:56,737 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:56,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:56,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2306, Invalid=11736, Unknown=0, NotChecked=0, Total=14042 [2020-04-18 11:34:56,738 INFO L87 Difference]: Start difference. First operand 652 states and 1164 transitions. Second operand 9 states. [2020-04-18 11:34:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:57,231 INFO L93 Difference]: Finished difference Result 652 states and 1164 transitions. [2020-04-18 11:34:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1164 transitions. [2020-04-18 11:34:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:34:57,232 INFO L105 Mcr]: ---- MCR iteration 13 ---- [2020-04-18 11:34:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:34:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -958277096, now seen corresponding path program 15 times [2020-04-18 11:34:57,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:34:57,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167799893] [2020-04-18 11:34:57,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:34:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:34:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:34:57,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167799893] [2020-04-18 11:34:57,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:34:57,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:34:57,274 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:34:57,275 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:34:57,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:34:57,279 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:34:57,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:34:57,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:34:57,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2763, Invalid=15059, Unknown=0, NotChecked=0, Total=17822 [2020-04-18 11:34:57,280 INFO L87 Difference]: Start difference. First operand 652 states and 1164 transitions. Second operand 9 states. [2020-04-18 11:34:57,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:34:57,725 INFO L93 Difference]: Finished difference Result 652 states and 1164 transitions. [2020-04-18 11:34:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1164 transitions. [2020-04-18 11:34:57,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:34:57,727 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1357419352] [2020-04-18 11:34:57,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:34:57,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:34:57,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1357419352] [2020-04-18 11:34:57,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-18 11:34:57,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:34:57,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-18 11:34:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3179, Invalid=17991, Unknown=0, NotChecked=0, Total=21170 [2020-04-18 11:34:57,730 INFO L87 Difference]: Start difference. First operand 33875 states and 181202 transitions. Second operand 33 states. [2020-04-18 11:35:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:04,175 INFO L93 Difference]: Finished difference Result 183572 states and 774369 transitions. [2020-04-18 11:35:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2020-04-18 11:35:04,175 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2020-04-18 11:35:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:35:04,731 INFO L225 Difference]: With dead ends: 183572 [2020-04-18 11:35:04,731 INFO L226 Difference]: Without dead ends: 182550 [2020-04-18 11:35:04,733 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 774 SyntacticMatches, 10 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30771 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10600, Invalid=64202, Unknown=0, NotChecked=0, Total=74802 [2020-04-18 11:35:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182550 states. [2020-04-18 11:35:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182550 to 30165. [2020-04-18 11:35:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30165 states. [2020-04-18 11:35:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30165 states to 30165 states and 162363 transitions. [2020-04-18 11:35:08,792 INFO L78 Accepts]: Start accepts. Automaton has 30165 states and 162363 transitions. Word has length 25 [2020-04-18 11:35:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:35:08,792 INFO L479 AbstractCegarLoop]: Abstraction has 30165 states and 162363 transitions. [2020-04-18 11:35:08,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-18 11:35:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 30165 states and 162363 transitions. [2020-04-18 11:35:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:08,794 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:35:08,794 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:35:10,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:10,597 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:35:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-04-18 11:35:10,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:35:10,599 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [537061702] [2020-04-18 11:35:10,600 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:10,603 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 417 transitions. [2020-04-18 11:35:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-04-18 11:35:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:10,604 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:35:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1256748813, now seen corresponding path program 2 times [2020-04-18 11:35:10,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:10,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820983631] [2020-04-18 11:35:10,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:35:10,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820983631] [2020-04-18 11:35:10,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:10,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:35:10,613 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:10,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:10,623 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 103 transitions. [2020-04-18 11:35:10,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:10,625 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:10,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:35:10,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:35:10,625 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-04-18 11:35:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:10,635 INFO L93 Difference]: Finished difference Result 211 states and 487 transitions. [2020-04-18 11:35:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 487 transitions. [2020-04-18 11:35:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:10,636 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:35:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:10,637 INFO L82 PathProgramCache]: Analyzing trace with hash -558114339, now seen corresponding path program 3 times [2020-04-18 11:35:10,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:10,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849583528] [2020-04-18 11:35:10,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:10,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849583528] [2020-04-18 11:35:10,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454175457] [2020-04-18 11:35:10,655 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:10,742 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:35:10,742 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:10,743 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:35:10,744 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:10,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:10,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:35:10,755 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:10,756 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:10,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 79 transitions. [2020-04-18 11:35:10,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:10,781 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:35:10,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:35:10,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:35:10,781 INFO L87 Difference]: Start difference. First operand 211 states and 487 transitions. Second operand 7 states. [2020-04-18 11:35:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:10,856 INFO L93 Difference]: Finished difference Result 274 states and 588 transitions. [2020-04-18 11:35:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 588 transitions. [2020-04-18 11:35:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:10,857 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:35:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:10,857 INFO L82 PathProgramCache]: Analyzing trace with hash -306385085, now seen corresponding path program 4 times [2020-04-18 11:35:10,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:10,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992764453] [2020-04-18 11:35:10,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:10,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992764453] [2020-04-18 11:35:10,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782549503] [2020-04-18 11:35:10,889 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 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:10,977 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:35:10,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:10,978 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:35:10,979 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:10,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:10,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:35:10,994 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:10,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:11,001 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 67 transitions. [2020-04-18 11:35:11,002 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:11,014 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:35:11,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:35:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:35:11,015 INFO L87 Difference]: Start difference. First operand 274 states and 588 transitions. Second operand 9 states. [2020-04-18 11:35:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:11,217 INFO L93 Difference]: Finished difference Result 320 states and 644 transitions. [2020-04-18 11:35:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 644 transitions. [2020-04-18 11:35:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:11,218 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:35:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash -398407445, now seen corresponding path program 5 times [2020-04-18 11:35:11,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:11,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038564455] [2020-04-18 11:35:11,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:11,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038564455] [2020-04-18 11:35:11,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859708890] [2020-04-18 11:35:11,257 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:11,351 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 11:35:11,352 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:11,353 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:35:11,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:11,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:11,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:35:11,401 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:11,403 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:11,410 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:35:11,410 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:11,436 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:35:11,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:35:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:35:11,437 INFO L87 Difference]: Start difference. First operand 320 states and 644 transitions. Second operand 11 states. [2020-04-18 11:35:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:11,855 INFO L93 Difference]: Finished difference Result 337 states and 655 transitions. [2020-04-18 11:35:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 655 transitions. [2020-04-18 11:35:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:11,856 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:35:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 6 times [2020-04-18 11:35:11,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:11,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866111330] [2020-04-18 11:35:11,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:11,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866111330] [2020-04-18 11:35:11,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60097749] [2020-04-18 11:35:11,899 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:11,986 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 11:35:11,987 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:11,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:35:11,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:12,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:12,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:35:12,006 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:12,007 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:12,012 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 11:35:12,013 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:12,030 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:35:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:35:12,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:35:12,031 INFO L87 Difference]: Start difference. First operand 337 states and 655 transitions. Second operand 11 states. [2020-04-18 11:35:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:12,521 INFO L93 Difference]: Finished difference Result 366 states and 689 transitions. [2020-04-18 11:35:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 689 transitions. [2020-04-18 11:35:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:12,522 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:35:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:12,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1664960285, now seen corresponding path program 7 times [2020-04-18 11:35:12,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:12,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139241698] [2020-04-18 11:35:12,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:35:12,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139241698] [2020-04-18 11:35:12,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:12,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:35:12,592 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:12,594 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:12,603 INFO L259 McrAutomatonBuilder]: Finished intersection with 55 states and 83 transitions. [2020-04-18 11:35:12,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:12,717 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 11:35:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:35:12,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=2838, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:35:12,718 INFO L87 Difference]: Start difference. First operand 366 states and 689 transitions. Second operand 11 states. [2020-04-18 11:35:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:13,019 INFO L93 Difference]: Finished difference Result 411 states and 747 transitions. [2020-04-18 11:35:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 747 transitions. [2020-04-18 11:35:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:13,020 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:35:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1756982645, now seen corresponding path program 8 times [2020-04-18 11:35:13,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:13,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800586102] [2020-04-18 11:35:13,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:35:13,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800586102] [2020-04-18 11:35:13,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855794031] [2020-04-18 11:35:13,064 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 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:13,153 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:35:13,153 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:13,154 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:35:13,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:35:13,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:13,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:35:13,171 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:13,172 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:13,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-04-18 11:35:13,179 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:13,251 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 11:35:13,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:35:13,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=878, Invalid=4092, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 11:35:13,253 INFO L87 Difference]: Start difference. First operand 411 states and 747 transitions. Second operand 15 states. [2020-04-18 11:35:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:13,866 INFO L93 Difference]: Finished difference Result 414 states and 748 transitions. [2020-04-18 11:35:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 748 transitions. [2020-04-18 11:35:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:13,867 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:35:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash 667736843, now seen corresponding path program 9 times [2020-04-18 11:35:13,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:13,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40219056] [2020-04-18 11:35:13,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:35:13,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40219056] [2020-04-18 11:35:13,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179031090] [2020-04-18 11:35:13,908 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:13,995 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:35:13,995 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:13,996 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-04-18 11:35:13,996 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 11:35:14,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:14,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 11:35:14,011 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:14,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:14,017 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:35:14,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:14,033 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:35:14,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:35:14,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=5745, Unknown=0, NotChecked=0, Total=6972 [2020-04-18 11:35:14,034 INFO L87 Difference]: Start difference. First operand 414 states and 748 transitions. Second operand 13 states. [2020-04-18 11:35:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:14,642 INFO L93 Difference]: Finished difference Result 449 states and 785 transitions. [2020-04-18 11:35:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 785 transitions. [2020-04-18 11:35:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:14,643 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 11:35:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:14,643 INFO L82 PathProgramCache]: Analyzing trace with hash -979464821, now seen corresponding path program 10 times [2020-04-18 11:35:14,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:14,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023627194] [2020-04-18 11:35:14,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:15,026 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-04-18 11:35:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:35:15,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023627194] [2020-04-18 11:35:15,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:15,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:35:15,052 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:15,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:15,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:35:15,057 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:15,075 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:15,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:35:15,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1722, Invalid=8580, Unknown=0, NotChecked=0, Total=10302 [2020-04-18 11:35:15,076 INFO L87 Difference]: Start difference. First operand 449 states and 785 transitions. Second operand 9 states. [2020-04-18 11:35:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:15,551 INFO L93 Difference]: Finished difference Result 449 states and 785 transitions. [2020-04-18 11:35:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 785 transitions. [2020-04-18 11:35:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:15,552 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 11:35:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:15,552 INFO L82 PathProgramCache]: Analyzing trace with hash -958275701, now seen corresponding path program 11 times [2020-04-18 11:35:15,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:15,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682466108] [2020-04-18 11:35:15,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:35:15,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682466108] [2020-04-18 11:35:15,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:15,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 11:35:15,595 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:15,596 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:15,599 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:35:15,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:15,600 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:35:15,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2154, Invalid=11888, Unknown=0, NotChecked=0, Total=14042 [2020-04-18 11:35:15,601 INFO L87 Difference]: Start difference. First operand 449 states and 785 transitions. Second operand 9 states. [2020-04-18 11:35:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:16,072 INFO L93 Difference]: Finished difference Result 449 states and 785 transitions. [2020-04-18 11:35:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 785 transitions. [2020-04-18 11:35:16,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:35:16,074 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [537061702] [2020-04-18 11:35:16,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:35:16,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 11:35:16,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [537061702] [2020-04-18 11:35:16,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:35:16,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:35:16,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:35:16,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2597, Invalid=15225, Unknown=0, NotChecked=0, Total=17822 [2020-04-18 11:35:16,076 INFO L87 Difference]: Start difference. First operand 30165 states and 162363 transitions. Second operand 24 states. [2020-04-18 11:35:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:22,685 INFO L93 Difference]: Finished difference Result 197911 states and 812328 transitions. [2020-04-18 11:35:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2020-04-18 11:35:22,686 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2020-04-18 11:35:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:35:23,336 INFO L225 Difference]: With dead ends: 197911 [2020-04-18 11:35:23,336 INFO L226 Difference]: Without dead ends: 197474 [2020-04-18 11:35:23,338 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34322 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=9967, Invalid=69839, Unknown=0, NotChecked=0, Total=79806 [2020-04-18 11:35:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197474 states. [2020-04-18 11:35:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197474 to 29338. [2020-04-18 11:35:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29338 states. [2020-04-18 11:35:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29338 states to 29338 states and 157263 transitions. [2020-04-18 11:35:27,748 INFO L78 Accepts]: Start accepts. Automaton has 29338 states and 157263 transitions. Word has length 25 [2020-04-18 11:35:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:35:27,749 INFO L479 AbstractCegarLoop]: Abstraction has 29338 states and 157263 transitions. [2020-04-18 11:35:27,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:35:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 29338 states and 157263 transitions. [2020-04-18 11:35:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:27,752 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:35:27,752 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:35:28,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:28,954 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:35:28,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:28,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 1 times [2020-04-18 11:35:28,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:35:28,955 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [66650198] [2020-04-18 11:35:28,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:28,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 69 transitions. [2020-04-18 11:35:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-04-18 11:35:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:28,958 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:35:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:28,958 INFO L82 PathProgramCache]: Analyzing trace with hash 86770305, now seen corresponding path program 2 times [2020-04-18 11:35:28,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:28,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68318164] [2020-04-18 11:35:28,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:35:28,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68318164] [2020-04-18 11:35:28,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:28,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:35:28,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:28,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:28,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 67 transitions. [2020-04-18 11:35:28,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:28,973 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:35:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:35:28,974 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-04-18 11:35:28,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:28,983 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:35:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:35:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:35:28,984 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:35:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:28,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 3 times [2020-04-18 11:35:28,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:28,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050337585] [2020-04-18 11:35:28,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:35:29,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050337585] [2020-04-18 11:35:29,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:29,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:35:29,006 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:29,008 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:29,012 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 11:35:29,012 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:29,020 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:35:29,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:35:29,020 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand 5 states. [2020-04-18 11:35:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:29,035 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-04-18 11:35:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2020-04-18 11:35:29,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:35:29,035 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [66650198] [2020-04-18 11:35:29,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:35:29,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:35:29,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [66650198] [2020-04-18 11:35:29,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:35:29,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:35:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:35:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:35:29,037 INFO L87 Difference]: Start difference. First operand 29338 states and 157263 transitions. Second operand 5 states. [2020-04-18 11:35:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:29,425 INFO L93 Difference]: Finished difference Result 52267 states and 269053 transitions. [2020-04-18 11:35:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:35:29,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-18 11:35:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:35:29,603 INFO L225 Difference]: With dead ends: 52267 [2020-04-18 11:35:29,603 INFO L226 Difference]: Without dead ends: 52173 [2020-04-18 11:35:29,604 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:35:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52173 states. [2020-04-18 11:35:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52173 to 36868. [2020-04-18 11:35:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36868 states. [2020-04-18 11:35:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36868 states to 36868 states and 197743 transitions. [2020-04-18 11:35:31,729 INFO L78 Accepts]: Start accepts. Automaton has 36868 states and 197743 transitions. Word has length 25 [2020-04-18 11:35:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:35:31,730 INFO L479 AbstractCegarLoop]: Abstraction has 36868 states and 197743 transitions. [2020-04-18 11:35:31,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:35:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 36868 states and 197743 transitions. [2020-04-18 11:35:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:31,734 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:35:31,735 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:35:31,735 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:35:31,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:31,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1444696671, now seen corresponding path program 1 times [2020-04-18 11:35:31,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:35:31,735 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1413989666] [2020-04-18 11:35:31,736 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:31,738 INFO L259 McrAutomatonBuilder]: Finished intersection with 124 states and 255 transitions. [2020-04-18 11:35:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2020-04-18 11:35:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:31,739 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:35:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2033040719, now seen corresponding path program 2 times [2020-04-18 11:35:31,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:31,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882146712] [2020-04-18 11:35:31,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:35:31,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882146712] [2020-04-18 11:35:31,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:31,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:35:31,747 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:31,748 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:31,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 85 states and 158 transitions. [2020-04-18 11:35:31,758 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:31,761 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:31,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:35:31,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:35:31,761 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 3 states. [2020-04-18 11:35:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:31,768 INFO L93 Difference]: Finished difference Result 145 states and 275 transitions. [2020-04-18 11:35:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 275 transitions. [2020-04-18 11:35:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:31,769 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:35:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1444956951, now seen corresponding path program 3 times [2020-04-18 11:35:31,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:31,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687524242] [2020-04-18 11:35:31,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:35:31,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687524242] [2020-04-18 11:35:31,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:31,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:35:31,789 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:31,791 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:31,799 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 64 transitions. [2020-04-18 11:35:31,799 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:31,806 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:35:31,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:35:31,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:35:31,807 INFO L87 Difference]: Start difference. First operand 145 states and 275 transitions. Second operand 5 states. [2020-04-18 11:35:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:31,841 INFO L93 Difference]: Finished difference Result 152 states and 280 transitions. [2020-04-18 11:35:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 280 transitions. [2020-04-18 11:35:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:31,841 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:35:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:31,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1444958001, now seen corresponding path program 4 times [2020-04-18 11:35:31,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:31,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872461711] [2020-04-18 11:35:31,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-04-18 11:35:31,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872461711] [2020-04-18 11:35:31,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765622057] [2020-04-18 11:35:31,873 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 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:31,981 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:35:31,981 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:31,982 INFO L264 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:35:31,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-04-18 11:35:32,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:32,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-04-18 11:35:32,001 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:32,004 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:32,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 64 transitions. [2020-04-18 11:35:32,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:32,049 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:35:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:35:32,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:35:32,050 INFO L87 Difference]: Start difference. First operand 152 states and 280 transitions. Second operand 7 states. [2020-04-18 11:35:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:32,108 INFO L93 Difference]: Finished difference Result 159 states and 284 transitions. [2020-04-18 11:35:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 284 transitions. [2020-04-18 11:35:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:32,109 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:35:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:32,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1444696671, now seen corresponding path program 5 times [2020-04-18 11:35:32,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:32,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299158090] [2020-04-18 11:35:32,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-04-18 11:35:32,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299158090] [2020-04-18 11:35:32,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094444274] [2020-04-18 11:35:32,155 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:32,248 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-04-18 11:35:32,248 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:32,249 INFO L264 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:35:32,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-04-18 11:35:32,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:32,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 11:35:32,265 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:32,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:32,277 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 91 transitions. [2020-04-18 11:35:32,278 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:32,400 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 11:35:32,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:35:32,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:35:32,401 INFO L87 Difference]: Start difference. First operand 159 states and 284 transitions. Second operand 14 states. [2020-04-18 11:35:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:32,522 INFO L93 Difference]: Finished difference Result 159 states and 284 transitions. [2020-04-18 11:35:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 284 transitions. [2020-04-18 11:35:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:32,523 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:35:32,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:32,523 INFO L82 PathProgramCache]: Analyzing trace with hash -639654315, now seen corresponding path program 6 times [2020-04-18 11:35:32,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:32,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380598902] [2020-04-18 11:35:32,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 11:35:32,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380598902] [2020-04-18 11:35:32,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:35:32,553 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:32,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:32,559 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-04-18 11:35:32,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:32,569 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:32,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:35:32,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:35:32,570 INFO L87 Difference]: Start difference. First operand 159 states and 284 transitions. Second operand 7 states. [2020-04-18 11:35:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:32,652 INFO L93 Difference]: Finished difference Result 159 states and 284 transitions. [2020-04-18 11:35:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 284 transitions. [2020-04-18 11:35:32,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:35:32,653 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1413989666] [2020-04-18 11:35:32,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:35:32,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:35:32,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1413989666] [2020-04-18 11:35:32,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 11:35:32,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:35:32,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:35:32,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-04-18 11:35:32,654 INFO L87 Difference]: Start difference. First operand 36868 states and 197743 transitions. Second operand 16 states. [2020-04-18 11:35:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:33,784 INFO L93 Difference]: Finished difference Result 102986 states and 481544 transitions. [2020-04-18 11:35:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 11:35:33,784 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-04-18 11:35:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:35:34,113 INFO L225 Difference]: With dead ends: 102986 [2020-04-18 11:35:34,114 INFO L226 Difference]: Without dead ends: 102694 [2020-04-18 11:35:34,114 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 195 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=464, Invalid=1258, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 11:35:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102694 states. [2020-04-18 11:35:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102694 to 37245. [2020-04-18 11:35:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37245 states. [2020-04-18 11:35:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37245 states to 37245 states and 199415 transitions. [2020-04-18 11:35:37,166 INFO L78 Accepts]: Start accepts. Automaton has 37245 states and 199415 transitions. Word has length 27 [2020-04-18 11:35:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:35:37,167 INFO L479 AbstractCegarLoop]: Abstraction has 37245 states and 199415 transitions. [2020-04-18 11:35:37,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 11:35:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 37245 states and 199415 transitions. [2020-04-18 11:35:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:37,171 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:35:37,171 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:35:37,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 z3 -smt2 -in SMTLIB2_COMPLIANT=true,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:37,572 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:35:37,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:37,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1707919879, now seen corresponding path program 1 times [2020-04-18 11:35:37,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:35:37,573 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2092958232] [2020-04-18 11:35:37,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:37,583 INFO L259 McrAutomatonBuilder]: Finished intersection with 484 states and 1539 transitions. [2020-04-18 11:35:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states. [2020-04-18 11:35:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:37,587 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:35:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash -961346275, now seen corresponding path program 2 times [2020-04-18 11:35:37,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:37,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993142839] [2020-04-18 11:35:37,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 11:35:37,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993142839] [2020-04-18 11:35:37,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:35:37,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:35:37,596 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:37,597 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:37,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 121 states and 244 transitions. [2020-04-18 11:35:37,615 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:37,617 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:35:37,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:35:37,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:35:37,617 INFO L87 Difference]: Start difference. First operand 484 states. Second operand 3 states. [2020-04-18 11:35:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:37,632 INFO L93 Difference]: Finished difference Result 649 states and 1927 transitions. [2020-04-18 11:35:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1927 transitions. [2020-04-18 11:35:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:37,633 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:35:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash -437619671, now seen corresponding path program 3 times [2020-04-18 11:35:37,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:37,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746120034] [2020-04-18 11:35:37,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:37,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746120034] [2020-04-18 11:35:37,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453498176] [2020-04-18 11:35:37,662 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:37,751 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 11:35:37,752 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:37,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 11:35:37,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:37,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:37,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 11:35:37,767 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:37,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:37,790 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 186 transitions. [2020-04-18 11:35:37,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:37,809 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:35:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:35:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:35:37,810 INFO L87 Difference]: Start difference. First operand 649 states and 1927 transitions. Second operand 7 states. [2020-04-18 11:35:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:35:37,908 INFO L93 Difference]: Finished difference Result 922 states and 2584 transitions. [2020-04-18 11:35:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2584 transitions. [2020-04-18 11:35:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 11:35:37,910 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:35:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:35:37,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1223947389, now seen corresponding path program 4 times [2020-04-18 11:35:37,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:35:37,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38662670] [2020-04-18 11:35:37,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:35:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:35:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:37,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38662670] [2020-04-18 11:35:37,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395674327] [2020-04-18 11:35:37,950 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 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:38,042 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:35:38,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:35:38,043 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 11:35:38,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:35:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 11:35:38,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:35:38,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 11:35:38,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:35:38,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:35:38,079 INFO L259 McrAutomatonBuilder]: Finished intersection with 93 states and 162 transitions. [2020-04-18 11:35:38,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:35:38,094 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 11:35:38,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:35:38,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:35:38,094 INFO L87 Difference]: Start difference. First operand 922 states and 2584 transitions. Second operand 9 states. Received shutdown request... [2020-04-18 11:35:39,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:35:39,068 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 11:35:39,073 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 11:35:39,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:35:39 BasicIcfg [2020-04-18 11:35:39,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:35:39,074 INFO L168 Benchmark]: Toolchain (without parser) took 239135.58 ms. Allocated memory was 137.9 MB in the beginning and 3.1 GB in the end (delta: 3.0 GB). Free memory was 101.5 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,074 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.97 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.5 MB in the beginning and 159.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.90 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,075 INFO L168 Benchmark]: Boogie Preprocessor took 34.17 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,075 INFO L168 Benchmark]: RCFGBuilder took 418.38 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 136.5 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,076 INFO L168 Benchmark]: TraceAbstraction took 237927.38 ms. Allocated memory was 202.4 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 135.8 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-04-18 11:35:39,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.97 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.5 MB in the beginning and 159.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.90 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.17 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.38 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 136.5 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237927.38 ms. Allocated memory was 202.4 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 135.8 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 55 ProgramPointsBefore, 18 ProgramPointsAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 389 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 576 CheckedPairsTotal, 45 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 577 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 964 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 781 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1796 CheckedPairsTotal, 73 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 1100 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2240 CheckedPairsTotal, 92 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 139 ProgramPointsBefore, 61 ProgramPointsAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 1387 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3096 CheckedPairsTotal, 115 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 160 ProgramPointsBefore, 71 ProgramPointsAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 1785 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 4226 CheckedPairsTotal, 127 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while BasicCegarLoop was analyzing trace of length 28 with TraceHistMax 4,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 237.5s, OverallIterations: 58, TraceHistogramMax: 6, AutomataDifference: 71.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.9s, HoareTripleCheckerStatistics: 2618 SDtfs, 23232 SDslu, 15815 SDs, 0 SdLazy, 21548 SolverSat, 2194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10747 GetRequests, 7693 SyntacticMatches, 33 SemanticMatches, 3021 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271157 ImplicationChecksByTransitivity, 48.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37245occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 57.7s AutomataMinimizationTime, 52 MinimizatonAttempts, 1381043 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown