/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-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:37:24,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:37:24,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:37:24,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:37:24,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:37:24,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:37:24,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:37:24,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:37:24,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:37:24,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:37:24,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:37:24,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:37:24,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:37:24,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:37:24,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:37:24,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:37:24,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:37:24,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:37:24,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:37:24,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:37:24,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:37:24,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:37:24,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:37:24,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:37:24,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:37:24,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:37:24,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:37:24,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:37:24,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:37:24,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:37:24,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:37:24,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:37:24,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:37:24,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:37:24,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:37:24,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:37:24,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:37:24,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:37:24,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:37:24,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:37:24,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:37:24,696 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 10:37:24,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:37:24,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:37:24,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:37:24,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:37:24,712 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:37:24,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:37:24,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:37:24,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:37:24,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:37:24,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:37:24,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:37:24,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:37:24,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:37:24,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:37:24,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:37:24,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:37:24,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:37:24,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:37:24,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:37:24,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:37:24,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:37:24,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:37:24,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:37:24,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:37:24,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:37:24,717 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:37:24,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:37:24,717 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:37:24,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:37:24,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:37:25,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:37:25,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:37:25,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:37:25,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:37:25,072 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:37:25,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-18 10:37:25,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88dd35d66/98a9959382cd4a74b157126cb4f3d64b/FLAG1ee3fe4ed [2020-04-18 10:37:25,669 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:37:25,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-18 10:37:25,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88dd35d66/98a9959382cd4a74b157126cb4f3d64b/FLAG1ee3fe4ed [2020-04-18 10:37:25,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88dd35d66/98a9959382cd4a74b157126cb4f3d64b [2020-04-18 10:37:25,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:37:25,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:37:25,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:37:25,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:37:25,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:37:25,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:37:25" (1/1) ... [2020-04-18 10:37:25,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db45994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:25, skipping insertion in model container [2020-04-18 10:37:25,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:37:25" (1/1) ... [2020-04-18 10:37:25,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:37:26,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:37:26,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:37:26,493 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:37:26,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:37:26,666 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:37:26,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26 WrapperNode [2020-04-18 10:37:26,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:37:26,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:37:26,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:37:26,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:37:26,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:37:26,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:37:26,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:37:26,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:37:26,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (1/1) ... [2020-04-18 10:37:26,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:37:26,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:37:26,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:37:26,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:37:26,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (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 10:37:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:37:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:37:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:37:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:37:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:37:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:37:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:37:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:37:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:37:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:37:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:37:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:37:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:37:26,827 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 10:37:27,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:37:27,192 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:37:27,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:37:27 BoogieIcfgContainer [2020-04-18 10:37:27,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:37:27,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:37:27,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:37:27,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:37:27,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:37:25" (1/3) ... [2020-04-18 10:37:27,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538cb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:37:27, skipping insertion in model container [2020-04-18 10:37:27,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:37:26" (2/3) ... [2020-04-18 10:37:27,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538cb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:37:27, skipping insertion in model container [2020-04-18 10:37:27,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:37:27" (3/3) ... [2020-04-18 10:37:27,204 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-04-18 10:37:27,213 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:37:27,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:37:27,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:37:27,220 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:37:27,243 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,244 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,244 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,244 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,245 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,245 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,246 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,246 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,246 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,247 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,247 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,248 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,248 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,248 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,249 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,249 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,249 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,255 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,271 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,271 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,272 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,272 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,282 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,282 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,282 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,283 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:37:27,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:37:27,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:37:27,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:37:27,315 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:37:27,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:37:27,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:37:27,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:37:27,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:37:27,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:37:27,332 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:37:27,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:37:27,379 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:37:27,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:37:27,387 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:37:27,391 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:37:27,417 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:37:27,417 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:37:27,418 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:37:27,422 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:37:27,422 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:37:29,212 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 10:37:29,443 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 10:37:29,443 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 10:37:29,447 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:37:29,473 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:37:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:37:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:37:29,484 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:29,485 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:29,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 10:37:29,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:29,498 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1165469870] [2020-04-18 10:37:29,514 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:29,526 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:37:29,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:37:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:37:29,529 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:29,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 10:37:29,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:29,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371552408] [2020-04-18 10:37:29,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:29,728 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 10:37:29,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371552408] [2020-04-18 10:37:29,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:29,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:37:29,731 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:29,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:29,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:37:29,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:29,743 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:29,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:37:29,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:37:29,749 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:37:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:29,753 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:37:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:37:29,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:29,754 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1165469870] [2020-04-18 10:37:29,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:29,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:37:29,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1165469870] [2020-04-18 10:37:29,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:37:29,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:29,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:37:29,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:37:29,762 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:37:29,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:29,817 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 10:37:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:37:29,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:37:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:29,847 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:37:29,854 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:37:29,856 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 10:37:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:37:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:37:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:37:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 10:37:29,941 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 10:37:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:29,942 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 10:37:29,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:37:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 10:37:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:37:29,944 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:29,944 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:29,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-18 10:37:29,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:29,945 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1784221755] [2020-04-18 10:37:29,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:29,947 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:37:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:37:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:37:29,947 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:29,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 2 times [2020-04-18 10:37:29,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:29,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960310949] [2020-04-18 10:37:29,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,043 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 10:37:30,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960310949] [2020-04-18 10:37:30,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,046 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,047 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,048 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:37:30,048 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,060 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:30,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:30,061 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 10:37:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,072 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 10:37:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 10:37:30,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:30,073 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1784221755] [2020-04-18 10:37:30,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:30,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:37:30,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1784221755] [2020-04-18 10:37:30,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:37:30,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:30,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:37:30,076 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 10:37:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,106 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 10:37:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:37:30,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:37:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:30,112 INFO L225 Difference]: With dead ends: 242 [2020-04-18 10:37:30,112 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:37:30,114 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:37:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:37:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:37:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:37:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 10:37:30,125 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-18 10:37:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:30,125 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 10:37:30,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:37:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 10:37:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:37:30,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:30,127 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:30,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-18 10:37:30,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:30,128 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2061737429] [2020-04-18 10:37:30,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:37:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:37:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:37:30,131 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1380861297, now seen corresponding path program 2 times [2020-04-18 10:37:30,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142150296] [2020-04-18 10:37:30,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,210 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 10:37:30,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142150296] [2020-04-18 10:37:30,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,212 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,213 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,215 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 10:37:30,215 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,226 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:37:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:30,227 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 10:37:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,239 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:37:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:37:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:37:30,240 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:37:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 3 times [2020-04-18 10:37:30,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299686316] [2020-04-18 10:37:30,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,279 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 10:37:30,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299686316] [2020-04-18 10:37:30,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,303 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:37:30,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,345 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:37:30,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:37:30,346 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 10:37:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,357 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 10:37:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 10:37:30,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:30,358 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2061737429] [2020-04-18 10:37:30,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:30,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:37:30,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2061737429] [2020-04-18 10:37:30,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:37:30,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:30,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:37:30,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:37:30,360 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 6 states. [2020-04-18 10:37:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,398 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-04-18 10:37:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:37:30,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 10:37:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:30,400 INFO L225 Difference]: With dead ends: 138 [2020-04-18 10:37:30,400 INFO L226 Difference]: Without dead ends: 138 [2020-04-18 10:37:30,401 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:37:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-18 10:37:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-18 10:37:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-18 10:37:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-04-18 10:37:30,410 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-04-18 10:37:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:30,410 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-04-18 10:37:30,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:37:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-04-18 10:37:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:37:30,412 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:30,412 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:30,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-04-18 10:37:30,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:30,413 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1266857367] [2020-04-18 10:37:30,414 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 68 transitions. [2020-04-18 10:37:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 10:37:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:37:30,416 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,416 INFO L82 PathProgramCache]: Analyzing trace with hash -142845273, now seen corresponding path program 2 times [2020-04-18 10:37:30,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5706743] [2020-04-18 10:37:30,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,457 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 10:37:30,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5706743] [2020-04-18 10:37:30,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,458 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,459 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,462 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 39 transitions. [2020-04-18 10:37:30,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,470 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:37:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:30,471 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-04-18 10:37:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,484 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-04-18 10:37:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 75 transitions. [2020-04-18 10:37:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:37:30,485 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:37:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,485 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 3 times [2020-04-18 10:37:30,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858598824] [2020-04-18 10:37:30,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,530 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 10:37:30,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858598824] [2020-04-18 10:37:30,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:37:30,531 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,532 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,534 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 10:37:30,535 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,540 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:37:30,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:37:30,541 INFO L87 Difference]: Start difference. First operand 43 states and 75 transitions. Second operand 3 states. [2020-04-18 10:37:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,542 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-04-18 10:37:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 75 transitions. [2020-04-18 10:37:30,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:30,543 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1266857367] [2020-04-18 10:37:30,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:30,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:37:30,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1266857367] [2020-04-18 10:37:30,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:37:30,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:30,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:37:30,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:37:30,545 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 5 states. [2020-04-18 10:37:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,580 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-04-18 10:37:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:37:30,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 10:37:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:30,581 INFO L225 Difference]: With dead ends: 194 [2020-04-18 10:37:30,581 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 10:37:30,582 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:37:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 10:37:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 10:37:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 10:37:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-18 10:37:30,589 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-04-18 10:37:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:30,589 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-18 10:37:30,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:37:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-18 10:37:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:37:30,591 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:30,591 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:30,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 1 times [2020-04-18 10:37:30,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:30,592 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [848847635] [2020-04-18 10:37:30,592 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,594 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 10:37:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 10:37:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:37:30,596 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1612262128, now seen corresponding path program 2 times [2020-04-18 10:37:30,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430045581] [2020-04-18 10:37:30,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,631 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 10:37:30,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430045581] [2020-04-18 10:37:30,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,632 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,634 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,639 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 10:37:30,639 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,647 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:37:30,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:30,648 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 10:37:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,665 INFO L93 Difference]: Finished difference Result 84 states and 189 transitions. [2020-04-18 10:37:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 189 transitions. [2020-04-18 10:37:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:37:30,666 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:37:30,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1648184308, now seen corresponding path program 3 times [2020-04-18 10:37:30,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565243987] [2020-04-18 10:37:30,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,722 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 10:37:30,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565243987] [2020-04-18 10:37:30,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,723 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,729 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 10:37:30,729 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:30,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:37:30,735 INFO L87 Difference]: Start difference. First operand 84 states and 189 transitions. Second operand 4 states. [2020-04-18 10:37:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,756 INFO L93 Difference]: Finished difference Result 107 states and 220 transitions. [2020-04-18 10:37:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 220 transitions. [2020-04-18 10:37:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:37:30,757 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:37:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 4 times [2020-04-18 10:37:30,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899865654] [2020-04-18 10:37:30,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,792 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 10:37:30,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899865654] [2020-04-18 10:37:30,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:37:30,794 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,795 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,798 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-04-18 10:37:30,798 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,859 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:37:30,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:37:30,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:37:30,860 INFO L87 Difference]: Start difference. First operand 107 states and 220 transitions. Second operand 6 states. [2020-04-18 10:37:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:30,903 INFO L93 Difference]: Finished difference Result 136 states and 245 transitions. [2020-04-18 10:37:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 245 transitions. [2020-04-18 10:37:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:37:30,904 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:37:30,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:30,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 5 times [2020-04-18 10:37:30,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:30,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865497185] [2020-04-18 10:37:30,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:30,952 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 10:37:30,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865497185] [2020-04-18 10:37:30,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:30,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:30,953 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:30,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:30,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 10:37:30,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:30,986 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:37:30,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:30,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:37:30,987 INFO L87 Difference]: Start difference. First operand 136 states and 245 transitions. Second operand 4 states. [2020-04-18 10:37:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:31,002 INFO L93 Difference]: Finished difference Result 136 states and 245 transitions. [2020-04-18 10:37:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 245 transitions. [2020-04-18 10:37:31,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:31,004 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [848847635] [2020-04-18 10:37:31,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:31,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:37:31,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [848847635] [2020-04-18 10:37:31,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 10:37:31,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:31,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 10:37:31,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:37:31,005 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 11 states. [2020-04-18 10:37:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:31,528 INFO L93 Difference]: Finished difference Result 159 states and 341 transitions. [2020-04-18 10:37:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 10:37:31,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-04-18 10:37:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:31,529 INFO L225 Difference]: With dead ends: 159 [2020-04-18 10:37:31,530 INFO L226 Difference]: Without dead ends: 59 [2020-04-18 10:37:31,531 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 10:37:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-18 10:37:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-18 10:37:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-18 10:37:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-18 10:37:31,534 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-18 10:37:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:31,535 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-18 10:37:31,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 10:37:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-18 10:37:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:37:31,536 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:31,536 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:31,536 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:31,536 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-18 10:37:31,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:31,537 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1115059163] [2020-04-18 10:37:31,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:31,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 10:37:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 10:37:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:37:31,543 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1559482212, now seen corresponding path program 2 times [2020-04-18 10:37:31,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:31,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060664929] [2020-04-18 10:37:31,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:31,574 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 10:37:31,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060664929] [2020-04-18 10:37:31,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:31,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:31,575 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:31,577 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:31,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 10:37:31,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:31,590 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:37:31,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:31,590 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 10:37:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:31,606 INFO L93 Difference]: Finished difference Result 118 states and 282 transitions. [2020-04-18 10:37:31,607 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 282 transitions. [2020-04-18 10:37:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:37:31,607 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:37:31,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:31,608 INFO L82 PathProgramCache]: Analyzing trace with hash 459790692, now seen corresponding path program 3 times [2020-04-18 10:37:31,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:31,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063019178] [2020-04-18 10:37:31,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:31,639 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 10:37:31,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063019178] [2020-04-18 10:37:31,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:31,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:31,640 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:31,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:31,647 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 50 transitions. [2020-04-18 10:37:31,647 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:31,653 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:31,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:37:31,654 INFO L87 Difference]: Start difference. First operand 118 states and 282 transitions. Second operand 4 states. [2020-04-18 10:37:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:31,672 INFO L93 Difference]: Finished difference Result 158 states and 351 transitions. [2020-04-18 10:37:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 351 transitions. [2020-04-18 10:37:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:37:31,673 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:37:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash 419234372, now seen corresponding path program 4 times [2020-04-18 10:37:31,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:31,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272880162] [2020-04-18 10:37:31,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:31,703 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 10:37:31,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272880162] [2020-04-18 10:37:31,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:31,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:37:31,704 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:31,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:31,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 10:37:31,712 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:31,765 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:37:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:37:31,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:37:31,766 INFO L87 Difference]: Start difference. First operand 158 states and 351 transitions. Second operand 6 states. [2020-04-18 10:37:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:31,806 INFO L93 Difference]: Finished difference Result 216 states and 430 transitions. [2020-04-18 10:37:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 430 transitions. [2020-04-18 10:37:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:37:31,807 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:37:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 5 times [2020-04-18 10:37:31,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:31,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728136280] [2020-04-18 10:37:31,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:31,851 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 10:37:31,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728136280] [2020-04-18 10:37:31,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:31,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:37:31,852 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:31,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:31,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 10:37:31,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:31,930 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:37:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:37:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:37:31,931 INFO L87 Difference]: Start difference. First operand 216 states and 430 transitions. Second operand 6 states. [2020-04-18 10:37:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:31,962 INFO L93 Difference]: Finished difference Result 216 states and 430 transitions. [2020-04-18 10:37:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 430 transitions. [2020-04-18 10:37:31,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:31,964 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1115059163] [2020-04-18 10:37:31,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:31,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:37:31,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1115059163] [2020-04-18 10:37:31,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:37:31,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:31,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:37:31,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:37:31,966 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 13 states. [2020-04-18 10:37:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:32,261 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-18 10:37:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 10:37:32,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-04-18 10:37:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:32,262 INFO L225 Difference]: With dead ends: 60 [2020-04-18 10:37:32,262 INFO L226 Difference]: Without dead ends: 45 [2020-04-18 10:37:32,263 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2020-04-18 10:37:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-18 10:37:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-18 10:37:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-18 10:37:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-18 10:37:32,266 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-18 10:37:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:32,266 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-18 10:37:32,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:37:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-18 10:37:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:37:32,267 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:32,267 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:32,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:32,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:32,267 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-18 10:37:32,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:32,268 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1734475852] [2020-04-18 10:37:32,268 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:32,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 10:37:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 10:37:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:37:32,272 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1150340927, now seen corresponding path program 2 times [2020-04-18 10:37:32,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:32,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017001766] [2020-04-18 10:37:32,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:32,303 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 10:37:32,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017001766] [2020-04-18 10:37:32,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:32,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:32,304 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:32,306 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:32,309 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-04-18 10:37:32,309 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:32,317 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:37:32,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:32,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:32,317 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-04-18 10:37:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:32,332 INFO L93 Difference]: Finished difference Result 154 states and 384 transitions. [2020-04-18 10:37:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 384 transitions. [2020-04-18 10:37:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:37:32,334 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:37:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1368613075, now seen corresponding path program 3 times [2020-04-18 10:37:32,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:32,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114498037] [2020-04-18 10:37:32,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:32,362 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 10:37:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114498037] [2020-04-18 10:37:32,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:32,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:32,363 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:32,365 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:32,367 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-04-18 10:37:32,368 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:32,374 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:37:32,374 INFO L87 Difference]: Start difference. First operand 154 states and 384 transitions. Second operand 4 states. [2020-04-18 10:37:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:32,391 INFO L93 Difference]: Finished difference Result 212 states and 495 transitions. [2020-04-18 10:37:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 495 transitions. [2020-04-18 10:37:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:37:32,392 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:37:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash 111367155, now seen corresponding path program 4 times [2020-04-18 10:37:32,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:32,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153342412] [2020-04-18 10:37:32,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:32,421 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 10:37:32,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153342412] [2020-04-18 10:37:32,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:32,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:37:32,422 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:32,423 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:32,426 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 48 transitions. [2020-04-18 10:37:32,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:32,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:37:32,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:37:32,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:37:32,481 INFO L87 Difference]: Start difference. First operand 212 states and 495 transitions. Second operand 6 states. [2020-04-18 10:37:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:32,517 INFO L93 Difference]: Finished difference Result 316 states and 677 transitions. [2020-04-18 10:37:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 677 transitions. [2020-04-18 10:37:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:37:32,518 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:37:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:32,519 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 5 times [2020-04-18 10:37:32,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:32,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132789624] [2020-04-18 10:37:32,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:32,598 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 10:37:32,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132789624] [2020-04-18 10:37:32,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:32,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:37:32,599 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:32,604 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:32,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-04-18 10:37:32,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:32,729 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:37:32,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:37:32,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:37:32,730 INFO L87 Difference]: Start difference. First operand 316 states and 677 transitions. Second operand 7 states. [2020-04-18 10:37:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:32,834 INFO L93 Difference]: Finished difference Result 316 states and 677 transitions. [2020-04-18 10:37:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 677 transitions. [2020-04-18 10:37:32,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:32,836 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1734475852] [2020-04-18 10:37:32,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:32,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:37:32,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1734475852] [2020-04-18 10:37:32,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 10:37:32,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:32,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 10:37:32,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:37:32,840 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 14 states. [2020-04-18 10:37:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:33,085 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-18 10:37:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 10:37:33,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-04-18 10:37:33,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:33,086 INFO L225 Difference]: With dead ends: 42 [2020-04-18 10:37:33,086 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 10:37:33,087 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-04-18 10:37:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 10:37:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 10:37:33,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 10:37:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 10:37:33,089 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 10:37:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:33,089 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 10:37:33,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 10:37:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 10:37:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:37:33,090 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:37:33,090 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:37:33,090 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:37:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:33,091 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-18 10:37:33,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:37:33,091 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1330857165] [2020-04-18 10:37:33,092 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:33,095 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 10:37:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:37:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:37:33,099 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:37:33,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:33,100 INFO L82 PathProgramCache]: Analyzing trace with hash 219391538, now seen corresponding path program 2 times [2020-04-18 10:37:33,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:33,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849369507] [2020-04-18 10:37:33,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:33,137 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 10:37:33,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849369507] [2020-04-18 10:37:33,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:33,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:33,138 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:33,139 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:33,144 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 82 transitions. [2020-04-18 10:37:33,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:33,153 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:37:33,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:33,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:37:33,157 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 4 states. [2020-04-18 10:37:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:33,178 INFO L93 Difference]: Finished difference Result 306 states and 842 transitions. [2020-04-18 10:37:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 842 transitions. [2020-04-18 10:37:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:37:33,179 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:37:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash 437663686, now seen corresponding path program 3 times [2020-04-18 10:37:33,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:33,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133836669] [2020-04-18 10:37:33,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:33,221 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 10:37:33,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133836669] [2020-04-18 10:37:33,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:33,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:37:33,223 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:33,224 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:33,229 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 10:37:33,229 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:33,235 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:37:33,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:33,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:37:33,236 INFO L87 Difference]: Start difference. First operand 306 states and 842 transitions. Second operand 4 states. [2020-04-18 10:37:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:33,286 INFO L93 Difference]: Finished difference Result 480 states and 1291 transitions. [2020-04-18 10:37:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1291 transitions. [2020-04-18 10:37:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:37:33,288 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:37:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash -352122458, now seen corresponding path program 4 times [2020-04-18 10:37:33,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:33,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596967740] [2020-04-18 10:37:33,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:33,323 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 10:37:33,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596967740] [2020-04-18 10:37:33,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:33,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:37:33,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:33,327 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:33,332 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 10:37:33,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:33,390 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:37:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:37:33,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:37:33,391 INFO L87 Difference]: Start difference. First operand 480 states and 1291 transitions. Second operand 6 states. [2020-04-18 10:37:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:33,435 INFO L93 Difference]: Finished difference Result 744 states and 1881 transitions. [2020-04-18 10:37:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1881 transitions. [2020-04-18 10:37:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:37:33,439 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:37:33,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:33,439 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 5 times [2020-04-18 10:37:33,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:33,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778877620] [2020-04-18 10:37:33,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:33,470 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 10:37:33,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778877620] [2020-04-18 10:37:33,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:33,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:37:33,471 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:33,472 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:33,476 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 10:37:33,476 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:33,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:37:33,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:37:33,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:37:33,502 INFO L87 Difference]: Start difference. First operand 744 states and 1881 transitions. Second operand 4 states. [2020-04-18 10:37:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:33,522 INFO L93 Difference]: Finished difference Result 1080 states and 2575 transitions. [2020-04-18 10:37:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 2575 transitions. [2020-04-18 10:37:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:37:33,526 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:37:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:37:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash -410995550, now seen corresponding path program 6 times [2020-04-18 10:37:33,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:37:33,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679708316] [2020-04-18 10:37:33,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:37:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:37:33,597 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 10:37:33,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679708316] [2020-04-18 10:37:33,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:37:33,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:37:33,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:37:33,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:37:33,602 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 39 transitions. [2020-04-18 10:37:33,602 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:37:33,700 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:37:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:37:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:37:33,701 INFO L87 Difference]: Start difference. First operand 1080 states and 2575 transitions. Second operand 7 states. [2020-04-18 10:37:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:33,863 INFO L93 Difference]: Finished difference Result 1104 states and 2588 transitions. [2020-04-18 10:37:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 2588 transitions. [2020-04-18 10:37:33,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:33,868 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1330857165] [2020-04-18 10:37:33,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:37:33,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:37:33,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1330857165] [2020-04-18 10:37:33,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 10:37:33,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:37:33,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 10:37:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:37:33,871 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 16 states. [2020-04-18 10:37:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:37:34,178 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 10:37:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 10:37:34,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2020-04-18 10:37:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:37:34,183 INFO L225 Difference]: With dead ends: 35 [2020-04-18 10:37:34,183 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:37:34,184 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 10:37:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:37:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:37:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:37:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:37:34,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 10:37:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:37:34,185 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:37:34,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 10:37:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:37:34,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:37:34,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:37:34 BasicIcfg [2020-04-18 10:37:34,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:37:34,192 INFO L168 Benchmark]: Toolchain (without parser) took 8248.91 ms. Allocated memory was 145.8 MB in the beginning and 314.6 MB in the end (delta: 168.8 MB). Free memory was 102.1 MB in the beginning and 135.2 MB in the end (delta: -33.1 MB). Peak memory consumption was 135.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,192 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.51 ms. Allocated memory was 145.8 MB in the beginning and 200.3 MB in the end (delta: 54.5 MB). Free memory was 100.3 MB in the beginning and 155.3 MB in the end (delta: -55.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.51 ms. Allocated memory is still 200.3 MB. Free memory was 155.3 MB in the beginning and 152.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,193 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 200.3 MB. Free memory was 152.6 MB in the beginning and 151.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,198 INFO L168 Benchmark]: RCFGBuilder took 445.53 ms. Allocated memory is still 200.3 MB. Free memory was 151.2 MB in the beginning and 129.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,200 INFO L168 Benchmark]: TraceAbstraction took 6992.39 ms. Allocated memory was 200.3 MB in the beginning and 314.6 MB in the end (delta: 114.3 MB). Free memory was 128.4 MB in the beginning and 135.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:37:34,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.51 ms. Allocated memory was 145.8 MB in the beginning and 200.3 MB in the end (delta: 54.5 MB). Free memory was 100.3 MB in the beginning and 155.3 MB in the end (delta: -55.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.51 ms. Allocated memory is still 200.3 MB. Free memory was 155.3 MB in the beginning and 152.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 200.3 MB. Free memory was 152.6 MB in the beginning and 151.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.53 ms. Allocated memory is still 200.3 MB. Free memory was 151.2 MB in the beginning and 129.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6992.39 ms. Allocated memory was 200.3 MB in the beginning and 314.6 MB in the end (delta: 114.3 MB). Free memory was 128.4 MB in the beginning and 135.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 137 SDtfs, 325 SDslu, 407 SDs, 0 SdLazy, 584 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 468 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...