/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/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:00:00,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:00:00,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:00:00,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:00:00,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:00:00,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:00:00,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:00:00,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:00:00,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:00:00,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:00:00,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:00:00,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:00:00,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:00:00,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:00:00,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:00:00,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:00:00,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:00:00,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:00:00,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:00:00,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:00:00,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:00:00,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:00:00,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:00:00,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:00:00,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:00:00,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:00:00,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:00:00,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:00:00,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:00:00,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:00:00,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:00:00,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:00:00,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:00:00,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:00:00,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:00:00,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:00:00,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:00:00,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:00:00,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:00:00,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:00:00,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:00:00,626 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 11:00:00,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:00:00,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:00:00,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:00:00,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:00:00,642 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:00:00,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:00:00,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:00:00,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:00:00,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:00:00,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:00:00,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:00:00,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:00:00,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:00:00,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:00:00,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:00:00,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:00:00,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:00:00,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:00:00,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:00:00,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:00:00,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:00:00,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:00:00,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:00:00,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:00:00,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:00:00,646 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:00:00,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:00:00,647 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:00:00,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:00:00,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:00:00,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:00:00,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:00:00,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:00:00,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:00:00,967 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:00:00,968 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-04-18 11:00:01,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd911d16a/b5deaba0856c48e6aec26b142437ba31/FLAG491ce7657 [2020-04-18 11:00:01,669 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:00:01,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-04-18 11:00:01,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd911d16a/b5deaba0856c48e6aec26b142437ba31/FLAG491ce7657 [2020-04-18 11:00:01,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd911d16a/b5deaba0856c48e6aec26b142437ba31 [2020-04-18 11:00:01,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:00:01,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:00:01,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:00:01,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:00:01,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:00:01,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:00:01" (1/1) ... [2020-04-18 11:00:01,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318c773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:01, skipping insertion in model container [2020-04-18 11:00:01,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:00:01" (1/1) ... [2020-04-18 11:00:01,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:00:01,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:00:02,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:00:02,531 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:00:02,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:00:02,680 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:00:02,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02 WrapperNode [2020-04-18 11:00:02,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:00:02,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:00:02,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:00:02,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:00:02,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:00:02,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:00:02,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:00:02,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:00:02,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (1/1) ... [2020-04-18 11:00:02,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:00:02,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:00:02,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:00:02,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:00:02,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (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 11:00:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:00:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:00:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:00:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:00:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:00:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:00:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:00:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:00:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:00:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:00:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:00:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:00:02,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:00:02,846 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 11:00:03,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:00:03,242 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:00:03,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:00:03 BoogieIcfgContainer [2020-04-18 11:00:03,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:00:03,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:00:03,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:00:03,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:00:03,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:00:01" (1/3) ... [2020-04-18 11:00:03,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd25b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:00:03, skipping insertion in model container [2020-04-18 11:00:03,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:00:02" (2/3) ... [2020-04-18 11:00:03,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd25b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:00:03, skipping insertion in model container [2020-04-18 11:00:03,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:00:03" (3/3) ... [2020-04-18 11:00:03,255 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-04-18 11:00:03,266 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:00:03,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:00:03,274 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:00:03,275 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:00:03,302 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,305 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,305 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,305 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,306 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,306 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,306 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,307 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,307 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,307 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,308 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,308 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,308 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,308 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,309 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,309 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,313 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,313 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,314 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,314 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,320 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,321 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,321 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,321 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,325 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,325 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,325 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,326 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:00:03,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:00:03,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:00:03,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:00:03,362 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:00:03,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:00:03,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:00:03,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:00:03,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:00:03,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:00:03,379 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 11:00:03,382 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:00:03,426 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:00:03,427 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:00:03,433 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:00:03,441 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:00:03,463 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:00:03,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:00:03,464 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:00:03,466 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 11:00:03,468 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:00:05,088 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-04-18 11:00:05,406 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1996 [2020-04-18 11:00:05,406 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 11:00:05,411 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 11:00:05,433 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 11:00:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 11:00:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:00:05,443 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:05,444 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:05,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:05,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-04-18 11:00:05,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:05,459 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [222363958] [2020-04-18 11:00:05,478 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:05,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:00:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:00:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:00:05,496 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:05,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 2 times [2020-04-18 11:00:05,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:05,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024280446] [2020-04-18 11:00:05,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:05,723 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 11:00:05,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024280446] [2020-04-18 11:00:05,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:05,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:00:05,727 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:05,728 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:05,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:00:05,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:05,738 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:00:05,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:00:05,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:00:05,745 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:00:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:05,748 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:00:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:00:05,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:05,750 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [222363958] [2020-04-18 11:00:05,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:05,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:00:05,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [222363958] [2020-04-18 11:00:05,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:00:05,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:00:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:00:05,758 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 11:00:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:05,789 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 11:00:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:00:05,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:00:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:05,815 INFO L225 Difference]: With dead ends: 214 [2020-04-18 11:00:05,822 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 11:00:05,824 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 11:00:05,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 11:00:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 11:00:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 11:00:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 11:00:05,902 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 11:00:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:05,903 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 11:00:05,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:00:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 11:00:05,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:00:05,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:05,905 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:05,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash 837018342, now seen corresponding path program 1 times [2020-04-18 11:00:05,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:05,906 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [430663349] [2020-04-18 11:00:05,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:05,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:00:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:00:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:00:05,908 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 837018342, now seen corresponding path program 2 times [2020-04-18 11:00:05,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:05,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008147390] [2020-04-18 11:00:05,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:00:05,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008147390] [2020-04-18 11:00:05,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:05,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:00:05,989 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:05,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:05,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:00:05,992 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:06,000 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:00:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:00:06,001 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:00:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,017 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 11:00:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 11:00:06,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:06,018 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [430663349] [2020-04-18 11:00:06,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:06,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:00:06,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [430663349] [2020-04-18 11:00:06,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:00:06,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:00:06,021 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 11:00:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,038 INFO L93 Difference]: Finished difference Result 184 states and 465 transitions. [2020-04-18 11:00:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:00:06,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:00:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:06,040 INFO L225 Difference]: With dead ends: 184 [2020-04-18 11:00:06,040 INFO L226 Difference]: Without dead ends: 88 [2020-04-18 11:00:06,041 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:00:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-18 11:00:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-04-18 11:00:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-04-18 11:00:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2020-04-18 11:00:06,050 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 9 [2020-04-18 11:00:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:06,051 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2020-04-18 11:00:06,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:00:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2020-04-18 11:00:06,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:00:06,052 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:06,052 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:06,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1248093964, now seen corresponding path program 1 times [2020-04-18 11:00:06,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:06,053 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [84026656] [2020-04-18 11:00:06,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,055 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:00:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:00:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:00:06,056 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1215159266, now seen corresponding path program 2 times [2020-04-18 11:00:06,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:06,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350887687] [2020-04-18 11:00:06,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:06,138 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 11:00:06,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350887687] [2020-04-18 11:00:06,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:06,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:00:06,139 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:06,140 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,142 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-04-18 11:00:06,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:06,151 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:00:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:00:06,152 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 11:00:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,166 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:00:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:00:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:00:06,168 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:00:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1248093964, now seen corresponding path program 3 times [2020-04-18 11:00:06,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:06,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874205332] [2020-04-18 11:00:06,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:06,242 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 11:00:06,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874205332] [2020-04-18 11:00:06,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:06,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:00:06,244 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:06,245 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,247 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 11:00:06,247 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:06,266 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:00:06,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:00:06,267 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 11:00:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,280 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:00:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:00:06,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:06,283 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [84026656] [2020-04-18 11:00:06,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:06,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:00:06,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [84026656] [2020-04-18 11:00:06,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:00:06,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:06,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:00:06,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:00:06,284 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand 6 states. [2020-04-18 11:00:06,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,358 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2020-04-18 11:00:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 11:00:06,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 11:00:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:06,360 INFO L225 Difference]: With dead ends: 118 [2020-04-18 11:00:06,360 INFO L226 Difference]: Without dead ends: 64 [2020-04-18 11:00:06,360 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:00:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-18 11:00:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-04-18 11:00:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-18 11:00:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-04-18 11:00:06,366 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-04-18 11:00:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:06,367 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-04-18 11:00:06,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:00:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-04-18 11:00:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:00:06,368 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:06,368 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:06,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-04-18 11:00:06,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:06,369 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [863302632] [2020-04-18 11:00:06,370 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,371 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 108 transitions. [2020-04-18 11:00:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 11:00:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:00:06,372 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,373 INFO L82 PathProgramCache]: Analyzing trace with hash -984768229, now seen corresponding path program 2 times [2020-04-18 11:00:06,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:06,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110148951] [2020-04-18 11:00:06,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:06,443 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 11:00:06,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110148951] [2020-04-18 11:00:06,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:06,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:06,444 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:06,446 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 50 transitions. [2020-04-18 11:00:06,450 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:06,458 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:00:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:00:06,458 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-04-18 11:00:06,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,472 INFO L93 Difference]: Finished difference Result 56 states and 115 transitions. [2020-04-18 11:00:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 115 transitions. [2020-04-18 11:00:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:00:06,473 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:00:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash -36207031, now seen corresponding path program 3 times [2020-04-18 11:00:06,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:06,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399124632] [2020-04-18 11:00:06,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:06,512 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 11:00:06,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399124632] [2020-04-18 11:00:06,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:06,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:06,513 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:06,514 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,518 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-04-18 11:00:06,518 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:06,530 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:00:06,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:00:06,531 INFO L87 Difference]: Start difference. First operand 56 states and 115 transitions. Second operand 4 states. [2020-04-18 11:00:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,544 INFO L93 Difference]: Finished difference Result 71 states and 137 transitions. [2020-04-18 11:00:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 137 transitions. [2020-04-18 11:00:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:00:06,545 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:00:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,546 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 4 times [2020-04-18 11:00:06,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:06,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943270208] [2020-04-18 11:00:06,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:06,626 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 11:00:06,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943270208] [2020-04-18 11:00:06,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:06,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:00:06,627 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:06,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 11:00:06,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:06,658 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:00:06,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:06,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:00:06,658 INFO L87 Difference]: Start difference. First operand 71 states and 137 transitions. Second operand 4 states. [2020-04-18 11:00:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,672 INFO L93 Difference]: Finished difference Result 71 states and 137 transitions. [2020-04-18 11:00:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 137 transitions. [2020-04-18 11:00:06,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:06,673 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [863302632] [2020-04-18 11:00:06,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:06,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:00:06,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [863302632] [2020-04-18 11:00:06,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:00:06,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:06,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:00:06,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:00:06,675 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 8 states. [2020-04-18 11:00:06,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:06,945 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-04-18 11:00:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 11:00:06,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 11:00:06,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:06,947 INFO L225 Difference]: With dead ends: 77 [2020-04-18 11:00:06,947 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 11:00:06,947 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:00:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 11:00:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 11:00:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 11:00:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-04-18 11:00:06,953 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-04-18 11:00:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:06,953 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-04-18 11:00:06,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:00:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-04-18 11:00:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:00:06,954 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:06,954 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:06,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-04-18 11:00:06,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:06,955 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1288491406] [2020-04-18 11:00:06,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 11:00:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 11:00:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:00:06,959 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:06,960 INFO L82 PathProgramCache]: Analyzing trace with hash -463043823, now seen corresponding path program 2 times [2020-04-18 11:00:06,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:06,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517409830] [2020-04-18 11:00:06,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:06,992 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 11:00:06,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517409830] [2020-04-18 11:00:06,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:06,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:06,993 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:06,994 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:06,998 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 60 transitions. [2020-04-18 11:00:06,999 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,006 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:00:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:07,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:00:07,007 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 11:00:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,020 INFO L93 Difference]: Finished difference Result 81 states and 181 transitions. [2020-04-18 11:00:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 181 transitions. [2020-04-18 11:00:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:00:07,021 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:00:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1122417757, now seen corresponding path program 3 times [2020-04-18 11:00:07,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354493437] [2020-04-18 11:00:07,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:07,052 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 11:00:07,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354493437] [2020-04-18 11:00:07,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:07,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:07,053 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:07,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 39 transitions. [2020-04-18 11:00:07,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,070 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:00:07,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:07,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:00:07,071 INFO L87 Difference]: Start difference. First operand 81 states and 181 transitions. Second operand 4 states. [2020-04-18 11:00:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,084 INFO L93 Difference]: Finished difference Result 111 states and 240 transitions. [2020-04-18 11:00:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 240 transitions. [2020-04-18 11:00:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:00:07,085 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:00:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1676497961, now seen corresponding path program 4 times [2020-04-18 11:00:07,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59414789] [2020-04-18 11:00:07,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:07,141 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 11:00:07,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59414789] [2020-04-18 11:00:07,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:07,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:00:07,143 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:07,144 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,147 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:00:07,147 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,171 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:00:07,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:07,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:00:07,172 INFO L87 Difference]: Start difference. First operand 111 states and 240 transitions. Second operand 4 states. [2020-04-18 11:00:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,196 INFO L93 Difference]: Finished difference Result 135 states and 274 transitions. [2020-04-18 11:00:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 274 transitions. [2020-04-18 11:00:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:00:07,197 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:00:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 5 times [2020-04-18 11:00:07,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756237061] [2020-04-18 11:00:07,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:07,260 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 11:00:07,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756237061] [2020-04-18 11:00:07,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:07,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:07,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:07,263 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 11:00:07,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,367 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:00:07,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:00:07,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:00:07,368 INFO L87 Difference]: Start difference. First operand 135 states and 274 transitions. Second operand 6 states. [2020-04-18 11:00:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,391 INFO L93 Difference]: Finished difference Result 135 states and 274 transitions. [2020-04-18 11:00:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 274 transitions. [2020-04-18 11:00:07,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:07,392 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1288491406] [2020-04-18 11:00:07,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:07,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:00:07,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1288491406] [2020-04-18 11:00:07,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:00:07,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:07,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:00:07,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:00:07,394 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 10 states. [2020-04-18 11:00:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,605 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-04-18 11:00:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:00:07,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 11:00:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:07,606 INFO L225 Difference]: With dead ends: 57 [2020-04-18 11:00:07,607 INFO L226 Difference]: Without dead ends: 42 [2020-04-18 11:00:07,607 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:00:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-04-18 11:00:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-04-18 11:00:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-04-18 11:00:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-04-18 11:00:07,611 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-04-18 11:00:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:07,611 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-04-18 11:00:07,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:00:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-04-18 11:00:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:00:07,612 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:07,612 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:07,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-04-18 11:00:07,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:07,613 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1366011750] [2020-04-18 11:00:07,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,615 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 220 transitions. [2020-04-18 11:00:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 11:00:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:00:07,617 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:07,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1469783626, now seen corresponding path program 2 times [2020-04-18 11:00:07,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551969048] [2020-04-18 11:00:07,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:07,657 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 11:00:07,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551969048] [2020-04-18 11:00:07,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:07,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:07,658 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:07,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 61 transitions. [2020-04-18 11:00:07,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,677 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:00:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:07,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:00:07,678 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-04-18 11:00:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,692 INFO L93 Difference]: Finished difference Result 108 states and 253 transitions. [2020-04-18 11:00:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 253 transitions. [2020-04-18 11:00:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:00:07,693 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:00:07,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,694 INFO L82 PathProgramCache]: Analyzing trace with hash -412302120, now seen corresponding path program 3 times [2020-04-18 11:00:07,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840546231] [2020-04-18 11:00:07,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:07,730 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 11:00:07,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840546231] [2020-04-18 11:00:07,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:07,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:07,731 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:07,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 11:00:07,738 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,751 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:00:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:00:07,753 INFO L87 Difference]: Start difference. First operand 108 states and 253 transitions. Second operand 4 states. [2020-04-18 11:00:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,768 INFO L93 Difference]: Finished difference Result 156 states and 357 transitions. [2020-04-18 11:00:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 357 transitions. [2020-04-18 11:00:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:00:07,769 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:00:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash -431805210, now seen corresponding path program 4 times [2020-04-18 11:00:07,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109670696] [2020-04-18 11:00:07,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:07,841 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 11:00:07,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109670696] [2020-04-18 11:00:07,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:07,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:00:07,842 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:07,843 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:07,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 11:00:07,846 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:07,875 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:00:07,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:07,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:00:07,876 INFO L87 Difference]: Start difference. First operand 156 states and 357 transitions. Second operand 4 states. [2020-04-18 11:00:07,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:07,909 INFO L93 Difference]: Finished difference Result 210 states and 446 transitions. [2020-04-18 11:00:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 446 transitions. [2020-04-18 11:00:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:00:07,910 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:00:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:07,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1487856390, now seen corresponding path program 5 times [2020-04-18 11:00:07,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:07,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951114224] [2020-04-18 11:00:07,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,000 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 11:00:08,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951114224] [2020-04-18 11:00:08,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:08,002 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,003 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,006 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 11:00:08,006 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:08,052 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:00:08,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:00:08,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:00:08,053 INFO L87 Difference]: Start difference. First operand 210 states and 446 transitions. Second operand 6 states. [2020-04-18 11:00:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,103 INFO L93 Difference]: Finished difference Result 222 states and 456 transitions. [2020-04-18 11:00:08,103 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 456 transitions. [2020-04-18 11:00:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:00:08,104 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:00:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 6 times [2020-04-18 11:00:08,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:08,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412617254] [2020-04-18 11:00:08,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,207 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 11:00:08,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412617254] [2020-04-18 11:00:08,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:00:08,209 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,210 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,214 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 11:00:08,214 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:08,248 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:00:08,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:00:08,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:00:08,249 INFO L87 Difference]: Start difference. First operand 222 states and 456 transitions. Second operand 7 states. [2020-04-18 11:00:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,301 INFO L93 Difference]: Finished difference Result 222 states and 456 transitions. [2020-04-18 11:00:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 456 transitions. [2020-04-18 11:00:08,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:08,302 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1366011750] [2020-04-18 11:00:08,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:08,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:00:08,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1366011750] [2020-04-18 11:00:08,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:00:08,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:00:08,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:00:08,304 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 11 states. [2020-04-18 11:00:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,485 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 11:00:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 11:00:08,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 11:00:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:08,487 INFO L225 Difference]: With dead ends: 39 [2020-04-18 11:00:08,487 INFO L226 Difference]: Without dead ends: 33 [2020-04-18 11:00:08,488 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:00:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-04-18 11:00:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-04-18 11:00:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-04-18 11:00:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-04-18 11:00:08,492 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-04-18 11:00:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:08,493 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-04-18 11:00:08,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:00:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 11:00:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:08,494 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:00:08,494 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:00:08,494 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:00:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-04-18 11:00:08,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:00:08,495 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1123075292] [2020-04-18 11:00:08,496 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 11:00:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 11:00:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:08,502 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:00:08,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,503 INFO L82 PathProgramCache]: Analyzing trace with hash 96402109, now seen corresponding path program 2 times [2020-04-18 11:00:08,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:08,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453124703] [2020-04-18 11:00:08,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,549 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 11:00:08,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453124703] [2020-04-18 11:00:08,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:08,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,552 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,556 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 87 transitions. [2020-04-18 11:00:08,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:08,565 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:00:08,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:08,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:00:08,565 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-04-18 11:00:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,576 INFO L93 Difference]: Finished difference Result 232 states and 617 transitions. [2020-04-18 11:00:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 617 transitions. [2020-04-18 11:00:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:08,578 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:00:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1154111107, now seen corresponding path program 3 times [2020-04-18 11:00:08,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:08,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13674375] [2020-04-18 11:00:08,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,606 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 11:00:08,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13674375] [2020-04-18 11:00:08,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:08,607 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,608 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,612 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 11:00:08,612 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:08,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:00:08,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:08,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:00:08,631 INFO L87 Difference]: Start difference. First operand 232 states and 617 transitions. Second operand 4 states. [2020-04-18 11:00:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,649 INFO L93 Difference]: Finished difference Result 340 states and 887 transitions. [2020-04-18 11:00:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 887 transitions. [2020-04-18 11:00:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:08,651 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:00:08,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1646955883, now seen corresponding path program 4 times [2020-04-18 11:00:08,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:08,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121295011] [2020-04-18 11:00:08,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,676 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 11:00:08,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121295011] [2020-04-18 11:00:08,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:00:08,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,682 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 11:00:08,683 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:08,736 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 11:00:08,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:00:08,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:00:08,737 INFO L87 Difference]: Start difference. First operand 340 states and 887 transitions. Second operand 5 states. [2020-04-18 11:00:08,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,768 INFO L93 Difference]: Finished difference Result 500 states and 1227 transitions. [2020-04-18 11:00:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1227 transitions. [2020-04-18 11:00:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:08,770 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:00:08,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1647025633, now seen corresponding path program 5 times [2020-04-18 11:00:08,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:08,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454347818] [2020-04-18 11:00:08,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,824 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 11:00:08,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454347818] [2020-04-18 11:00:08,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:00:08,825 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,826 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,830 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 11:00:08,830 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:08,861 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:00:08,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:00:08,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:00:08,862 INFO L87 Difference]: Start difference. First operand 500 states and 1227 transitions. Second operand 4 states. [2020-04-18 11:00:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:08,895 INFO L93 Difference]: Finished difference Result 734 states and 1676 transitions. [2020-04-18 11:00:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1676 transitions. [2020-04-18 11:00:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:08,897 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:00:08,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:08,898 INFO L82 PathProgramCache]: Analyzing trace with hash -394114047, now seen corresponding path program 6 times [2020-04-18 11:00:08,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:08,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867141602] [2020-04-18 11:00:08,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:00:08,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867141602] [2020-04-18 11:00:08,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:08,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:00:08,953 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:08,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:08,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 42 transitions. [2020-04-18 11:00:08,958 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:09,007 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:00:09,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:00:09,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:00:09,008 INFO L87 Difference]: Start difference. First operand 734 states and 1676 transitions. Second operand 6 states. [2020-04-18 11:00:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:09,088 INFO L93 Difference]: Finished difference Result 826 states and 1792 transitions. [2020-04-18 11:00:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1792 transitions. [2020-04-18 11:00:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:00:09,090 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:00:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:00:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash -943469479, now seen corresponding path program 7 times [2020-04-18 11:00:09,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:00:09,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825857063] [2020-04-18 11:00:09,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:00:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:00:09,143 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 11:00:09,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825857063] [2020-04-18 11:00:09,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:00:09,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:00:09,144 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:00:09,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:00:09,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 11:00:09,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:00:09,187 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:00:09,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:00:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:00:09,188 INFO L87 Difference]: Start difference. First operand 826 states and 1792 transitions. Second operand 7 states. [2020-04-18 11:00:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:09,303 INFO L93 Difference]: Finished difference Result 840 states and 1799 transitions. [2020-04-18 11:00:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1799 transitions. [2020-04-18 11:00:09,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:09,306 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1123075292] [2020-04-18 11:00:09,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:00:09,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:00:09,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1123075292] [2020-04-18 11:00:09,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:00:09,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:00:09,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:00:09,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:00:09,308 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 14 states. [2020-04-18 11:00:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:00:09,612 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-04-18 11:00:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 11:00:09,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-04-18 11:00:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:00:09,612 INFO L225 Difference]: With dead ends: 32 [2020-04-18 11:00:09,613 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:00:09,613 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 11:00:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:00:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:00:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:00:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:00:09,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 11:00:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:00:09,614 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:00:09,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:00:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:00:09,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:00:09,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:00:09 BasicIcfg [2020-04-18 11:00:09,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:00:09,620 INFO L168 Benchmark]: Toolchain (without parser) took 7718.43 ms. Allocated memory was 144.2 MB in the beginning and 322.4 MB in the end (delta: 178.3 MB). Free memory was 100.9 MB in the beginning and 286.3 MB in the end (delta: -185.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:00:09,621 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:00:09,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.17 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:00:09,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.38 ms. Allocated memory is still 201.3 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:00:09,623 INFO L168 Benchmark]: Boogie Preprocessor took 23.93 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:00:09,623 INFO L168 Benchmark]: RCFGBuilder took 464.24 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 133.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:00:09,624 INFO L168 Benchmark]: TraceAbstraction took 6371.03 ms. Allocated memory was 201.3 MB in the beginning and 322.4 MB in the end (delta: 121.1 MB). Free memory was 132.0 MB in the beginning and 286.3 MB in the end (delta: -154.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:00:09,626 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.17 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.38 ms. Allocated memory is still 201.3 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.93 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.24 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 133.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6371.03 ms. Allocated memory was 201.3 MB in the beginning and 322.4 MB in the end (delta: 121.1 MB). Free memory was 132.0 MB in the beginning and 286.3 MB in the end (delta: -154.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 630 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1996 CheckedPairsTotal, 58 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 104 SDtfs, 226 SDslu, 232 SDs, 0 SdLazy, 313 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.0s AutomataMinimizationTime, 7 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...