/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/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:10:43,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:10:43,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:10:43,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:10:43,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:10:43,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:10:43,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:10:43,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:10:43,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:10:43,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:10:43,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:10:43,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:10:43,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:10:43,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:10:43,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:10:43,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:10:43,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:10:43,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:10:43,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:10:43,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:10:43,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:10:43,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:10:43,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:10:43,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:10:43,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:10:43,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:10:43,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:10:43,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:10:43,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:10:43,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:10:43,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:10:43,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:10:43,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:10:43,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:10:43,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:10:43,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:10:43,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:10:43,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:10:43,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:10:43,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:10:43,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:10:43,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:10:43,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:10:43,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:10:43,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:10:43,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:10:43,717 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:10:43,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:10:43,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:10:43,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:10:43,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:10:43,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:10:43,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:10:43,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:10:43,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:10:43,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:10:43,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:10:43,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:10:43,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:10:43,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:10:43,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:10:43,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:10:43,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:10:43,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:10:43,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:10:43,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:10:43,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:10:43,722 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:10:43,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:10:43,723 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:10:43,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:10:43,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:10:43,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:10:43,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:10:44,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:10:44,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:10:44,002 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:10:44,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-04-18 11:10:44,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64acb2b85/1a2820312e914175b8c6064647e69513/FLAG281055f6d [2020-04-18 11:10:44,621 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:10:44,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-04-18 11:10:44,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64acb2b85/1a2820312e914175b8c6064647e69513/FLAG281055f6d [2020-04-18 11:10:44,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64acb2b85/1a2820312e914175b8c6064647e69513 [2020-04-18 11:10:44,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:10:44,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:10:44,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:10:44,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:10:44,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:10:44,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:10:44" (1/1) ... [2020-04-18 11:10:44,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bba74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:44, skipping insertion in model container [2020-04-18 11:10:44,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:10:44" (1/1) ... [2020-04-18 11:10:44,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:10:45,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:10:45,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:10:45,507 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:10:45,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:10:45,633 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:10:45,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45 WrapperNode [2020-04-18 11:10:45,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:10:45,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:10:45,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:10:45,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:10:45,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:10:45,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:10:45,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:10:45,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:10:45,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... [2020-04-18 11:10:45,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:10:45,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:10:45,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:10:45,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:10:45,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:10:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:10:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:10:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:10:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:10:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:10:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:10:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:10:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:10:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:10:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:10:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:10:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:10:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:10:45,780 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:10:46,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:10:46,126 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:10:46,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:10:46 BoogieIcfgContainer [2020-04-18 11:10:46,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:10:46,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:10:46,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:10:46,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:10:46,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:10:44" (1/3) ... [2020-04-18 11:10:46,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd6232c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:10:46, skipping insertion in model container [2020-04-18 11:10:46,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:10:45" (2/3) ... [2020-04-18 11:10:46,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd6232c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:10:46, skipping insertion in model container [2020-04-18 11:10:46,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:10:46" (3/3) ... [2020-04-18 11:10:46,138 INFO L109 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-04-18 11:10:46,148 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:10:46,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:10:46,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:10:46,156 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:10:46,186 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,186 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,186 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,187 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,187 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,188 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,188 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,188 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,189 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,189 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,189 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,189 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,190 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,190 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,190 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,191 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,191 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,191 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,197 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,197 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,197 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,198 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,208 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,209 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,209 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,209 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,219 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,219 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,219 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,220 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:10:46,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:10:46,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:10:46,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:10:46,259 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:10:46,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:10:46,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:10:46,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:10:46,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:10:46,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:10:46,275 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:10:46,277 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:10:46,318 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:10:46,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:10:46,324 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:10:46,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:10:46,348 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:10:46,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:10:46,350 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:10:46,352 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:10:46,353 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:10:48,240 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2585 [2020-04-18 11:10:48,240 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:10:48,244 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 11:10:48,270 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:10:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:10:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:10:48,280 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:10:48,281 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:10:48,281 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:10:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,287 INFO L82 PathProgramCache]: Analyzing trace with hash -595431234, now seen corresponding path program 1 times [2020-04-18 11:10:48,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:10:48,295 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1155290204] [2020-04-18 11:10:48,311 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:48,326 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:10:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:10:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:10:48,329 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:10:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash -595431234, now seen corresponding path program 2 times [2020-04-18 11:10:48,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:48,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548843265] [2020-04-18 11:10:48,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:48,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548843265] [2020-04-18 11:10:48,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:48,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:10:48,571 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:48,572 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:48,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:10:48,579 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:48,590 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:10:48,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:48,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:48,598 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:10:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:48,602 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:10:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:10:48,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:48,605 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1155290204] [2020-04-18 11:10:48,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:10:48,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:10:48,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1155290204] [2020-04-18 11:10:48,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:10:48,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:10:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:48,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:48,615 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:10:48,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:48,665 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 11:10:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:10:48,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:10:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:10:48,687 INFO L225 Difference]: With dead ends: 282 [2020-04-18 11:10:48,687 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 11:10:48,688 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 11:10:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 11:10:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 11:10:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 11:10:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 11:10:48,752 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 11:10:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:10:48,754 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 11:10:48,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:10:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 11:10:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:10:48,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:10:48,755 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:10:48,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:10:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1278499900, now seen corresponding path program 1 times [2020-04-18 11:10:48,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:10:48,757 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [135196502] [2020-04-18 11:10:48,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:48,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 11:10:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:10:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:10:48,759 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:10:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1278498880, now seen corresponding path program 2 times [2020-04-18 11:10:48,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:48,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994419069] [2020-04-18 11:10:48,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:48,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994419069] [2020-04-18 11:10:48,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:48,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:48,832 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:48,832 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:48,834 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:10:48,834 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:48,838 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:10:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:48,839 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:10:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:48,843 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 11:10:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 11:10:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:10:48,843 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:10:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1278499900, now seen corresponding path program 3 times [2020-04-18 11:10:48,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:48,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427842919] [2020-04-18 11:10:48,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:48,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427842919] [2020-04-18 11:10:48,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:48,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:48,914 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:48,915 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:48,916 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 11:10:48,916 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:48,924 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:10:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:48,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:10:48,925 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 11:10:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:48,935 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 11:10:48,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 11:10:48,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:48,936 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [135196502] [2020-04-18 11:10:48,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:10:48,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:10:48,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [135196502] [2020-04-18 11:10:48,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:10:48,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:10:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:48,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:10:48,938 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 11:10:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:48,956 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 11:10:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:10:48,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:10:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:10:48,960 INFO L225 Difference]: With dead ends: 242 [2020-04-18 11:10:48,960 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 11:10:48,964 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 11:10:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 11:10:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 11:10:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 11:10:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 11:10:48,992 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-18 11:10:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:10:48,992 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 11:10:48,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:10:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 11:10:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:10:48,994 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:10:48,994 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:10:48,994 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:10:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash -453706064, now seen corresponding path program 1 times [2020-04-18 11:10:48,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:10:48,995 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1506964012] [2020-04-18 11:10:48,996 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:48,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:10:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:10:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:10:48,997 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:10:48,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:48,998 INFO L82 PathProgramCache]: Analyzing trace with hash -453641804, now seen corresponding path program 2 times [2020-04-18 11:10:48,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:48,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142901221] [2020-04-18 11:10:48,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142901221] [2020-04-18 11:10:49,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:49,067 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,081 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,084 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-04-18 11:10:49,084 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,096 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:10:49,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:49,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:49,096 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:10:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,101 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:10:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:10:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:10:49,102 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:10:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,104 INFO L82 PathProgramCache]: Analyzing trace with hash -453706064, now seen corresponding path program 3 times [2020-04-18 11:10:49,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120713541] [2020-04-18 11:10:49,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120713541] [2020-04-18 11:10:49,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:49,211 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,212 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 11:10:49,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,225 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:10:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:49,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:10:49,226 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 11:10:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,233 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:10:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:10:49,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:49,234 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1506964012] [2020-04-18 11:10:49,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:10:49,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:10:49,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1506964012] [2020-04-18 11:10:49,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:10:49,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:10:49,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:10:49,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:10:49,236 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 5 states. [2020-04-18 11:10:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,317 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-04-18 11:10:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 11:10:49,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:10:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:10:49,319 INFO L225 Difference]: With dead ends: 165 [2020-04-18 11:10:49,319 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 11:10:49,320 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:10:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 11:10:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 11:10:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 11:10:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-04-18 11:10:49,328 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-04-18 11:10:49,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:10:49,329 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-04-18 11:10:49,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:10:49,329 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-04-18 11:10:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:10:49,330 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:10:49,330 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:10:49,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:10:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1227187402, now seen corresponding path program 1 times [2020-04-18 11:10:49,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:10:49,331 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1553964669] [2020-04-18 11:10:49,332 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,333 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 11:10:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 11:10:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:10:49,334 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:10:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1177993102, now seen corresponding path program 2 times [2020-04-18 11:10:49,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933014814] [2020-04-18 11:10:49,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933014814] [2020-04-18 11:10:49,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:49,364 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,365 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,368 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-04-18 11:10:49,368 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,372 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:10:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:49,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:49,373 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-04-18 11:10:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,376 INFO L93 Difference]: Finished difference Result 40 states and 67 transitions. [2020-04-18 11:10:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-04-18 11:10:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:10:49,376 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:10:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1179963862, now seen corresponding path program 3 times [2020-04-18 11:10:49,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886903318] [2020-04-18 11:10:49,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886903318] [2020-04-18 11:10:49,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:49,437 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,438 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 11:10:49,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,452 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:49,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:49,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:10:49,453 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-04-18 11:10:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,468 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 11:10:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 11:10:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:10:49,468 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:10:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1227187402, now seen corresponding path program 4 times [2020-04-18 11:10:49,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984295208] [2020-04-18 11:10:49,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,530 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 11:10:49,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984295208] [2020-04-18 11:10:49,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:10:49,532 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,535 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:10:49,535 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:49,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:10:49,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:10:49,585 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand 6 states. [2020-04-18 11:10:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,606 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 11:10:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 11:10:49,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:49,607 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1553964669] [2020-04-18 11:10:49,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:10:49,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:10:49,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1553964669] [2020-04-18 11:10:49,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:10:49,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:10:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:10:49,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:10:49,609 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 7 states. [2020-04-18 11:10:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,720 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 11:10:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:10:49,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 11:10:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:10:49,721 INFO L225 Difference]: With dead ends: 122 [2020-04-18 11:10:49,721 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 11:10:49,722 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:10:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 11:10:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 11:10:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 11:10:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 11:10:49,728 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-04-18 11:10:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:10:49,728 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 11:10:49,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:10:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 11:10:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:10:49,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:10:49,729 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:10:49,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:10:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1770525280, now seen corresponding path program 1 times [2020-04-18 11:10:49,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:10:49,731 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1003936486] [2020-04-18 11:10:49,731 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,733 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 11:10:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:10:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:10:49,734 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:10:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1820000354, now seen corresponding path program 2 times [2020-04-18 11:10:49,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18207430] [2020-04-18 11:10:49,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18207430] [2020-04-18 11:10:49,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:49,763 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,764 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 11:10:49,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,773 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:10:49,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:49,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:49,774 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:10:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,777 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 11:10:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 11:10:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:10:49,778 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:10:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash -73900006, now seen corresponding path program 3 times [2020-04-18 11:10:49,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582048469] [2020-04-18 11:10:49,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582048469] [2020-04-18 11:10:49,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:10:49,837 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,839 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,841 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 11:10:49,842 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:49,853 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:10:49,854 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 4 states. [2020-04-18 11:10:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:49,884 INFO L93 Difference]: Finished difference Result 89 states and 160 transitions. [2020-04-18 11:10:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 160 transitions. [2020-04-18 11:10:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:10:49,885 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:10:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:49,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1788918310, now seen corresponding path program 4 times [2020-04-18 11:10:49,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:49,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784362926] [2020-04-18 11:10:49,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:49,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784362926] [2020-04-18 11:10:49,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:49,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:10:49,962 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:49,963 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:49,965 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 11:10:49,965 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,014 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:10:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:10:50,015 INFO L87 Difference]: Start difference. First operand 89 states and 160 transitions. Second operand 6 states. [2020-04-18 11:10:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,057 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 11:10:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 11:10:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:10:50,058 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:10:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1770525280, now seen corresponding path program 5 times [2020-04-18 11:10:50,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:50,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357664840] [2020-04-18 11:10:50,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:50,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357664840] [2020-04-18 11:10:50,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:50,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:10:50,115 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:50,116 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,118 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 11:10:50,118 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,154 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:50,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:10:50,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:10:50,155 INFO L87 Difference]: Start difference. First operand 91 states and 161 transitions. Second operand 7 states. [2020-04-18 11:10:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,202 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 11:10:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 11:10:50,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:50,203 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1003936486] [2020-04-18 11:10:50,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:10:50,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:10:50,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1003936486] [2020-04-18 11:10:50,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:10:50,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:10:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:10:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:10:50,205 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 8 states. [2020-04-18 11:10:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,298 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-04-18 11:10:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:10:50,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 11:10:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:10:50,300 INFO L225 Difference]: With dead ends: 92 [2020-04-18 11:10:50,300 INFO L226 Difference]: Without dead ends: 84 [2020-04-18 11:10:50,300 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:10:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-18 11:10:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-04-18 11:10:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-18 11:10:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-04-18 11:10:50,313 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-04-18 11:10:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:10:50,313 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-04-18 11:10:50,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:10:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-04-18 11:10:50,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:50,314 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:10:50,314 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:10:50,314 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:10:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,315 INFO L82 PathProgramCache]: Analyzing trace with hash -793372783, now seen corresponding path program 1 times [2020-04-18 11:10:50,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:10:50,315 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [44988924] [2020-04-18 11:10:50,316 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,322 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:10:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:10:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:50,325 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:10:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1793752689, now seen corresponding path program 2 times [2020-04-18 11:10:50,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:50,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118380018] [2020-04-18 11:10:50,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118380018] [2020-04-18 11:10:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:50,350 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:50,352 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,358 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 47 transitions. [2020-04-18 11:10:50,358 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,364 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:10:50,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:10:50,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:10:50,365 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 11:10:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,371 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 11:10:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 11:10:50,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:50,372 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:10:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash -701471815, now seen corresponding path program 3 times [2020-04-18 11:10:50,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:50,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840340756] [2020-04-18 11:10:50,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:50,421 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 11:10:50,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840340756] [2020-04-18 11:10:50,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:50,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:10:50,422 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:50,424 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,428 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 11:10:50,429 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,439 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:50,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:50,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:10:50,439 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 4 states. [2020-04-18 11:10:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,472 INFO L93 Difference]: Finished difference Result 377 states and 955 transitions. [2020-04-18 11:10:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 955 transitions. [2020-04-18 11:10:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:50,474 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:10:50,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash -753451475, now seen corresponding path program 4 times [2020-04-18 11:10:50,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:50,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098611686] [2020-04-18 11:10:50,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:50,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098611686] [2020-04-18 11:10:50,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:50,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:10:50,545 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:50,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,550 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-04-18 11:10:50,550 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,590 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:10:50,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:10:50,591 INFO L87 Difference]: Start difference. First operand 377 states and 955 transitions. Second operand 6 states. [2020-04-18 11:10:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,674 INFO L93 Difference]: Finished difference Result 400 states and 985 transitions. [2020-04-18 11:10:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 985 transitions. [2020-04-18 11:10:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:50,676 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:10:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1055605683, now seen corresponding path program 5 times [2020-04-18 11:10:50,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:50,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112914859] [2020-04-18 11:10:50,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:50,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112914859] [2020-04-18 11:10:50,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:50,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:10:50,758 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:50,759 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 11:10:50,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:10:50,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:10:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:10:50,794 INFO L87 Difference]: Start difference. First operand 400 states and 985 transitions. Second operand 7 states. [2020-04-18 11:10:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:50,889 INFO L93 Difference]: Finished difference Result 402 states and 986 transitions. [2020-04-18 11:10:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 986 transitions. [2020-04-18 11:10:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:50,891 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:10:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1036790193, now seen corresponding path program 6 times [2020-04-18 11:10:50,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:50,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022128014] [2020-04-18 11:10:50,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:50,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022128014] [2020-04-18 11:10:50,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:50,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:10:50,931 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:50,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:50,936 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 11:10:50,936 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:50,980 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:10:50,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:10:50,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:10:50,981 INFO L87 Difference]: Start difference. First operand 402 states and 986 transitions. Second operand 5 states. [2020-04-18 11:10:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:51,033 INFO L93 Difference]: Finished difference Result 633 states and 1447 transitions. [2020-04-18 11:10:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1447 transitions. [2020-04-18 11:10:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:51,035 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:10:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -924604059, now seen corresponding path program 7 times [2020-04-18 11:10:51,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:51,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589643382] [2020-04-18 11:10:51,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:51,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589643382] [2020-04-18 11:10:51,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:51,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:10:51,064 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:51,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:51,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-04-18 11:10:51,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:51,080 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:10:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:10:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:10:51,081 INFO L87 Difference]: Start difference. First operand 633 states and 1447 transitions. Second operand 4 states. [2020-04-18 11:10:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:51,099 INFO L93 Difference]: Finished difference Result 847 states and 1894 transitions. [2020-04-18 11:10:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1894 transitions. [2020-04-18 11:10:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:10:51,102 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:10:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:10:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1598285289, now seen corresponding path program 8 times [2020-04-18 11:10:51,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:10:51,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241649076] [2020-04-18 11:10:51,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:10:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:10:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:10:51,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241649076] [2020-04-18 11:10:51,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:10:51,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:10:51,130 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:10:51,131 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:10:51,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 11:10:51,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:10:51,266 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:10:51,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:10:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:10:51,267 INFO L87 Difference]: Start difference. First operand 847 states and 1894 transitions. Second operand 6 states. [2020-04-18 11:10:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:51,304 INFO L93 Difference]: Finished difference Result 1313 states and 2755 transitions. [2020-04-18 11:10:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2755 transitions. [2020-04-18 11:10:51,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:51,308 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [44988924] [2020-04-18 11:10:51,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:10:51,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:10:51,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [44988924] [2020-04-18 11:10:51,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 11:10:51,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:10:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:10:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:10:51,310 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 16 states. [2020-04-18 11:10:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:10:52,028 INFO L93 Difference]: Finished difference Result 127 states and 254 transitions. [2020-04-18 11:10:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 11:10:52,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2020-04-18 11:10:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:10:52,029 INFO L225 Difference]: With dead ends: 127 [2020-04-18 11:10:52,029 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:10:52,031 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=664, Invalid=2416, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 11:10:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:10:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:10:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:10:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:10:52,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:10:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:10:52,033 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:10:52,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 11:10:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:10:52,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:10:52,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:10:52 BasicIcfg [2020-04-18 11:10:52,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:10:52,039 INFO L168 Benchmark]: Toolchain (without parser) took 7119.09 ms. Allocated memory was 138.4 MB in the beginning and 283.1 MB in the end (delta: 144.7 MB). Free memory was 100.0 MB in the beginning and 88.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 156.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,039 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.93 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.1 MB in the beginning and 158.7 MB in the end (delta: -60.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 202.4 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,041 INFO L168 Benchmark]: Boogie Preprocessor took 24.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,042 INFO L168 Benchmark]: RCFGBuilder took 411.44 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 133.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,043 INFO L168 Benchmark]: TraceAbstraction took 5905.54 ms. Allocated memory was 202.4 MB in the beginning and 283.1 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 88.5 MB in the end (delta: 44.1 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:10:52,046 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 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.93 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.1 MB in the beginning and 158.7 MB in the end (delta: -60.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 202.4 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.10 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.44 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 133.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5905.54 ms. Allocated memory was 202.4 MB in the beginning and 283.1 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 88.5 MB in the end (delta: 44.1 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 79 ProgramPointsBefore, 31 ProgramPointsAfterwards, 71 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 15 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 666 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2585 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 118 SDtfs, 291 SDslu, 324 SDs, 0 SdLazy, 321 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 257 SyntacticMatches, 10 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.0s 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, 6 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...