/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:27:47,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:27:47,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:27:47,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:27:47,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:27:47,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:27:47,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:27:47,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:27:47,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:27:47,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:27:47,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:27:47,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:27:47,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:27:47,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:27:47,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:27:47,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:27:47,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:27:47,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:27:47,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:27:47,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:27:47,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:27:47,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:27:47,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:27:47,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:27:47,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:27:47,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:27:47,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:27:47,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:27:47,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:27:47,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:27:47,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:27:47,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:27:47,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:27:47,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:27:47,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:27:47,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:27:47,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:27:47,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:27:47,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:27:47,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:27:47,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:27:47,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:27:47,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:27:47,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:27:47,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:27:47,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:27:47,642 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:27:47,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:27:47,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:27:47,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:27:47,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:27:47,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:27:47,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:27:47,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:27:47,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:27:47,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:27:47,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:27:47,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:27:47,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:27:47,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:27:47,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:27:47,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:27:47,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:27:47,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:27:47,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:27:47,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:27:47,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:27:47,648 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:27:47,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:27:47,649 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:27:47,649 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:27:47,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:27:47,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:27:47,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:27:47,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:27:47,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:27:47,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:27:47,984 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:27:47,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-04-18 15:27:48,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca530ec0/0371aed573d54675b42c2106a240776c/FLAG3910a411d [2020-04-18 15:27:48,656 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:27:48,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2020-04-18 15:27:48,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca530ec0/0371aed573d54675b42c2106a240776c/FLAG3910a411d [2020-04-18 15:27:48,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca530ec0/0371aed573d54675b42c2106a240776c [2020-04-18 15:27:48,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:27:48,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:27:48,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:27:48,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:27:48,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:27:48,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:27:48" (1/1) ... [2020-04-18 15:27:48,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7d1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:48, skipping insertion in model container [2020-04-18 15:27:48,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:27:48" (1/1) ... [2020-04-18 15:27:48,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:27:49,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:27:49,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:27:49,544 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:27:49,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:27:49,679 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:27:49,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49 WrapperNode [2020-04-18 15:27:49,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:27:49,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:27:49,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:27:49,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:27:49,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:27:49,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:27:49,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:27:49,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:27:49,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (1/1) ... [2020-04-18 15:27:49,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:27:49,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:27:49,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:27:49,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:27:49,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (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 15:27:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:27:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:27:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:27:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:27:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:27:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:27:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:27:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:27:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:27:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:27:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:27:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:27:49,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:27:49,848 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 15:27:50,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:27:50,247 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:27:50,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:27:50 BoogieIcfgContainer [2020-04-18 15:27:50,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:27:50,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:27:50,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:27:50,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:27:50,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:27:48" (1/3) ... [2020-04-18 15:27:50,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d1a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:27:50, skipping insertion in model container [2020-04-18 15:27:50,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:27:49" (2/3) ... [2020-04-18 15:27:50,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d1a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:27:50, skipping insertion in model container [2020-04-18 15:27:50,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:27:50" (3/3) ... [2020-04-18 15:27:50,260 INFO L109 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-04-18 15:27:50,269 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:27:50,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:27:50,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:27:50,282 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:27:50,319 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,320 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,320 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,320 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,321 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,321 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,322 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,322 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,322 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,323 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,323 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,323 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,324 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,324 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,324 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,325 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,325 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,325 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,330 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,330 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,330 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,331 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,352 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,353 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,353 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,353 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,362 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,363 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,363 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,363 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:27:50,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:27:50,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:27:50,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:27:50,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:27:50,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:27:50,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:27:50,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:27:50,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:27:50,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:27:50,416 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 15:27:50,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:27:50,464 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:27:50,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:27:50,470 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:27:50,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 15:27:50,500 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 15:27:50,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:27:50,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:27:50,504 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:27:50,507 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:27:52,005 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 15:27:52,254 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2585 [2020-04-18 15:27:52,255 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 15:27:52,259 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:27:52,288 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:27:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:27:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:27:52,299 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:27:52,300 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:27:52,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:27:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:52,308 INFO L82 PathProgramCache]: Analyzing trace with hash -595431234, now seen corresponding path program 1 times [2020-04-18 15:27:52,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:27:52,316 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [823368293] [2020-04-18 15:27:52,334 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:52,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:27:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:27:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:27:52,350 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:27:52,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:52,351 INFO L82 PathProgramCache]: Analyzing trace with hash -595431234, now seen corresponding path program 2 times [2020-04-18 15:27:52,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:52,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434115174] [2020-04-18 15:27:52,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:52,578 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 15:27:52,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434115174] [2020-04-18 15:27:52,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:52,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:27:52,581 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:52,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:52,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:27:52,585 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:52,595 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:27:52,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:52,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:52,601 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:27:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:52,606 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:27:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:27:52,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:52,607 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [823368293] [2020-04-18 15:27:52,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:27:52,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:27:52,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [823368293] [2020-04-18 15:27:52,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:27:52,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:27:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:52,616 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:27:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:52,656 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:27:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:27:52,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:27:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:27:52,677 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:27:52,677 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:27:52,679 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 15:27:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:27:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:27:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:27:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:27:52,752 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:27:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:27:52,754 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:27:52,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:27:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:27:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:27:52,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:27:52,756 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:27:52,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:27:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1278499900, now seen corresponding path program 1 times [2020-04-18 15:27:52,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:27:52,757 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [363670254] [2020-04-18 15:27:52,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:52,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:27:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:27:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:27:52,760 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:27:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:52,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1278498880, now seen corresponding path program 2 times [2020-04-18 15:27:52,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:52,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348050771] [2020-04-18 15:27:52,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:52,842 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 15:27:52,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348050771] [2020-04-18 15:27:52,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:52,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:52,844 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:52,844 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:52,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:27:52,846 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:52,851 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:27:52,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:52,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:52,852 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:27:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:52,857 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:27:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:27:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:27:52,857 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:27:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:52,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1278499900, now seen corresponding path program 3 times [2020-04-18 15:27:52,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:52,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753082054] [2020-04-18 15:27:52,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:52,957 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 15:27:52,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753082054] [2020-04-18 15:27:52,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:52,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:52,959 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:52,959 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:52,961 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:27:52,962 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:52,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:27:52,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:27:52,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:27:52,977 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 15:27:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:52,991 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:27:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:27:52,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:52,992 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [363670254] [2020-04-18 15:27:52,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:27:52,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:27:52,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [363670254] [2020-04-18 15:27:52,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:27:52,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:27:52,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:27:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:27:52,994 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 5 states. [2020-04-18 15:27:53,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,032 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 15:27:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:27:53,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 15:27:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:27:53,036 INFO L225 Difference]: With dead ends: 242 [2020-04-18 15:27:53,036 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:27:53,039 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:27:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:27:53,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:27:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:27:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 15:27:53,054 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-18 15:27:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:27:53,055 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 15:27:53,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:27:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 15:27:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:27:53,057 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:27:53,057 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:27:53,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:27:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,058 INFO L82 PathProgramCache]: Analyzing trace with hash -453706064, now seen corresponding path program 1 times [2020-04-18 15:27:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:27:53,059 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [319544814] [2020-04-18 15:27:53,060 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,063 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:27:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:27:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:27:53,064 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:27:53,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,064 INFO L82 PathProgramCache]: Analyzing trace with hash -453641804, now seen corresponding path program 2 times [2020-04-18 15:27:53,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011015324] [2020-04-18 15:27:53,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:53,139 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 15:27:53,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011015324] [2020-04-18 15:27:53,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:53,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:53,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:53,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,145 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-04-18 15:27:53,145 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:53,150 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:27:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:53,151 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:27:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,155 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:27:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:27:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:27:53,156 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:27:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash -453706064, now seen corresponding path program 3 times [2020-04-18 15:27:53,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672838177] [2020-04-18 15:27:53,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:53,264 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 15:27:53,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672838177] [2020-04-18 15:27:53,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:53,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:53,265 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:53,268 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:27:53,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:53,287 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:27:53,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:27:53,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:27:53,288 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 15:27:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,299 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:27:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:27:53,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:53,302 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [319544814] [2020-04-18 15:27:53,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:27:53,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:27:53,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [319544814] [2020-04-18 15:27:53,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:27:53,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:27:53,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:27:53,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:27:53,305 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 5 states. [2020-04-18 15:27:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,385 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-04-18 15:27:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:27:53,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:27:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:27:53,387 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:27:53,387 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:27:53,388 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:27:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:27:53,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:27:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:27:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-04-18 15:27:53,398 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-04-18 15:27:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:27:53,398 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-04-18 15:27:53,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:27:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-04-18 15:27:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:27:53,400 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:27:53,400 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:27:53,400 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:27:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1227187402, now seen corresponding path program 1 times [2020-04-18 15:27:53,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:27:53,401 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1624745274] [2020-04-18 15:27:53,402 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 15:27:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 15:27:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:27:53,404 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:27:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1177993102, now seen corresponding path program 2 times [2020-04-18 15:27:53,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331738701] [2020-04-18 15:27:53,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:53,456 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 15:27:53,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331738701] [2020-04-18 15:27:53,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:53,457 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:53,458 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,461 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-04-18 15:27:53,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:53,466 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:27:53,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:53,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:53,467 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-04-18 15:27:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,471 INFO L93 Difference]: Finished difference Result 40 states and 67 transitions. [2020-04-18 15:27:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-04-18 15:27:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:27:53,471 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:27:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1179963862, now seen corresponding path program 3 times [2020-04-18 15:27:53,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498169294] [2020-04-18 15:27:53,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:53,554 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 15:27:53,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498169294] [2020-04-18 15:27:53,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:53,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:53,555 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:53,557 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,559 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:27:53,560 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:53,576 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:53,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:27:53,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:27:53,577 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-04-18 15:27:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,596 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 15:27:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 15:27:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:27:53,596 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:27:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1227187402, now seen corresponding path program 4 times [2020-04-18 15:27:53,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891274393] [2020-04-18 15:27:53,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:53,670 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 15:27:53,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891274393] [2020-04-18 15:27:53,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:53,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:27:53,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:53,672 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:27:53,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:53,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:53,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:27:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:27:53,745 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand 6 states. [2020-04-18 15:27:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,775 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 15:27:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 15:27:53,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:53,777 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1624745274] [2020-04-18 15:27:53,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:27:53,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:27:53,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1624745274] [2020-04-18 15:27:53,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:27:53,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:27:53,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:27:53,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:27:53,781 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 7 states. [2020-04-18 15:27:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,903 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:27:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:27:53,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:27:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:27:53,905 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:27:53,905 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:27:53,906 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:27:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:27:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:27:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:27:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:27:53,918 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-04-18 15:27:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:27:53,918 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:27:53,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:27:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:27:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:27:53,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:27:53,920 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:27:53,920 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:27:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1770525280, now seen corresponding path program 1 times [2020-04-18 15:27:53,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:27:53,922 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1229968918] [2020-04-18 15:27:53,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:27:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:27:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:27:53,926 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:27:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1820000354, now seen corresponding path program 2 times [2020-04-18 15:27:53,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129809500] [2020-04-18 15:27:53,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:53,977 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 15:27:53,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129809500] [2020-04-18 15:27:53,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:53,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:53,979 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:53,980 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:53,984 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 15:27:53,984 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:53,989 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:27:53,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:53,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:53,990 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:27:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:53,994 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:27:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:27:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:27:53,996 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:27:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash -73900006, now seen corresponding path program 3 times [2020-04-18 15:27:53,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:53,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231311055] [2020-04-18 15:27:53,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:54,066 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 15:27:54,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231311055] [2020-04-18 15:27:54,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:54,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:27:54,067 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:54,069 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:27:54,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:54,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:27:54,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:27:54,090 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 4 states. [2020-04-18 15:27:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:54,128 INFO L93 Difference]: Finished difference Result 89 states and 160 transitions. [2020-04-18 15:27:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 160 transitions. [2020-04-18 15:27:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:27:54,129 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:27:54,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1788918310, now seen corresponding path program 4 times [2020-04-18 15:27:54,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:54,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771818983] [2020-04-18 15:27:54,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:54,194 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 15:27:54,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771818983] [2020-04-18 15:27:54,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:54,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:27:54,195 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:54,196 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,198 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:27:54,198 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:54,224 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:54,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:27:54,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:27:54,224 INFO L87 Difference]: Start difference. First operand 89 states and 160 transitions. Second operand 6 states. [2020-04-18 15:27:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:54,276 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 15:27:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 15:27:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:27:54,277 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:27:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:54,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1770525280, now seen corresponding path program 5 times [2020-04-18 15:27:54,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:54,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539948655] [2020-04-18 15:27:54,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:54,329 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 15:27:54,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539948655] [2020-04-18 15:27:54,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:54,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:27:54,330 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:54,331 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,334 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:27:54,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:54,370 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:27:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:27:54,371 INFO L87 Difference]: Start difference. First operand 91 states and 161 transitions. Second operand 7 states. [2020-04-18 15:27:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:54,429 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 15:27:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 15:27:54,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:54,430 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1229968918] [2020-04-18 15:27:54,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:27:54,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:27:54,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1229968918] [2020-04-18 15:27:54,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:27:54,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:27:54,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:27:54,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:27:54,431 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 8 states. [2020-04-18 15:27:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:54,530 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-04-18 15:27:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:27:54,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 15:27:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:27:54,532 INFO L225 Difference]: With dead ends: 92 [2020-04-18 15:27:54,532 INFO L226 Difference]: Without dead ends: 84 [2020-04-18 15:27:54,533 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:27:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-18 15:27:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-04-18 15:27:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-18 15:27:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-04-18 15:27:54,543 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-04-18 15:27:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:27:54,545 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-04-18 15:27:54,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:27:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-04-18 15:27:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:54,546 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:27:54,546 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:27:54,546 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:27:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:54,547 INFO L82 PathProgramCache]: Analyzing trace with hash -793372783, now seen corresponding path program 1 times [2020-04-18 15:27:54,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:27:54,547 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1380391294] [2020-04-18 15:27:54,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:27:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:27:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:54,557 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:27:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1793752689, now seen corresponding path program 2 times [2020-04-18 15:27:54,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:54,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947007657] [2020-04-18 15:27:54,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:54,580 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 15:27:54,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947007657] [2020-04-18 15:27:54,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:54,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:54,581 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:54,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,601 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 47 transitions. [2020-04-18 15:27:54,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:54,605 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:27:54,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:27:54,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:27:54,606 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:27:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:54,611 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 15:27:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 15:27:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:54,613 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:27:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:54,613 INFO L82 PathProgramCache]: Analyzing trace with hash -701471815, now seen corresponding path program 3 times [2020-04-18 15:27:54,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:54,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33260089] [2020-04-18 15:27:54,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:54,651 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 15:27:54,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33260089] [2020-04-18 15:27:54,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:54,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:27:54,652 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:54,654 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,657 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 45 transitions. [2020-04-18 15:27:54,657 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:54,671 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:54,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:27:54,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:27:54,671 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 4 states. [2020-04-18 15:27:54,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:54,733 INFO L93 Difference]: Finished difference Result 377 states and 955 transitions. [2020-04-18 15:27:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 955 transitions. [2020-04-18 15:27:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:54,736 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:27:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:54,736 INFO L82 PathProgramCache]: Analyzing trace with hash -753451475, now seen corresponding path program 4 times [2020-04-18 15:27:54,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:54,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414025336] [2020-04-18 15:27:54,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:54,838 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 15:27:54,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414025336] [2020-04-18 15:27:54,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:54,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:27:54,839 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:54,842 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:54,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-04-18 15:27:54,847 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:54,917 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:54,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:27:54,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:27:54,917 INFO L87 Difference]: Start difference. First operand 377 states and 955 transitions. Second operand 6 states. [2020-04-18 15:27:55,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:55,093 INFO L93 Difference]: Finished difference Result 400 states and 985 transitions. [2020-04-18 15:27:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 985 transitions. [2020-04-18 15:27:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:55,094 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:27:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1055605683, now seen corresponding path program 5 times [2020-04-18 15:27:55,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:55,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004385082] [2020-04-18 15:27:55,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:55,161 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 15:27:55,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004385082] [2020-04-18 15:27:55,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:55,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:27:55,163 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:55,167 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:55,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 15:27:55,171 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:55,202 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:27:55,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:27:55,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:27:55,203 INFO L87 Difference]: Start difference. First operand 400 states and 985 transitions. Second operand 7 states. [2020-04-18 15:27:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:55,311 INFO L93 Difference]: Finished difference Result 402 states and 986 transitions. [2020-04-18 15:27:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 986 transitions. [2020-04-18 15:27:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:55,313 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:27:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:55,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1036790193, now seen corresponding path program 6 times [2020-04-18 15:27:55,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:55,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014262942] [2020-04-18 15:27:55,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:55,368 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 15:27:55,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014262942] [2020-04-18 15:27:55,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:55,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:27:55,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:55,370 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:55,374 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 15:27:55,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:55,426 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:27:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:27:55,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:27:55,428 INFO L87 Difference]: Start difference. First operand 402 states and 986 transitions. Second operand 5 states. [2020-04-18 15:27:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:55,468 INFO L93 Difference]: Finished difference Result 633 states and 1447 transitions. [2020-04-18 15:27:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1447 transitions. [2020-04-18 15:27:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:55,470 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:27:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash -924604059, now seen corresponding path program 7 times [2020-04-18 15:27:55,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:55,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528282057] [2020-04-18 15:27:55,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:55,513 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 15:27:55,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528282057] [2020-04-18 15:27:55,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:55,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:27:55,515 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:55,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:55,518 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-04-18 15:27:55,519 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:55,547 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:27:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:27:55,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:27:55,548 INFO L87 Difference]: Start difference. First operand 633 states and 1447 transitions. Second operand 4 states. [2020-04-18 15:27:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:55,569 INFO L93 Difference]: Finished difference Result 847 states and 1894 transitions. [2020-04-18 15:27:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1894 transitions. [2020-04-18 15:27:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:27:55,572 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:27:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:27:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1598285289, now seen corresponding path program 8 times [2020-04-18 15:27:55,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:27:55,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383159122] [2020-04-18 15:27:55,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:27:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:27:55,603 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 15:27:55,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383159122] [2020-04-18 15:27:55,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:27:55,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:27:55,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:27:55,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:27:55,610 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 15:27:55,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:27:55,763 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:27:55,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:27:55,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:27:55,764 INFO L87 Difference]: Start difference. First operand 847 states and 1894 transitions. Second operand 6 states. [2020-04-18 15:27:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:55,818 INFO L93 Difference]: Finished difference Result 1313 states and 2755 transitions. [2020-04-18 15:27:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2755 transitions. [2020-04-18 15:27:55,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:55,824 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1380391294] [2020-04-18 15:27:55,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:27:55,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:27:55,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1380391294] [2020-04-18 15:27:55,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 15:27:55,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:27:55,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 15:27:55,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:27:55,826 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 17 states. [2020-04-18 15:27:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:27:56,620 INFO L93 Difference]: Finished difference Result 127 states and 254 transitions. [2020-04-18 15:27:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 15:27:56,621 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2020-04-18 15:27:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:27:56,621 INFO L225 Difference]: With dead ends: 127 [2020-04-18 15:27:56,621 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:27:56,623 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=684, Invalid=2508, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 15:27:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:27:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:27:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:27:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:27:56,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:27:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:27:56,624 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:27:56,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 15:27:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:27:56,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:27:56,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:27:56 BasicIcfg [2020-04-18 15:27:56,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:27:56,630 INFO L168 Benchmark]: Toolchain (without parser) took 7681.36 ms. Allocated memory was 143.7 MB in the beginning and 291.5 MB in the end (delta: 147.8 MB). Free memory was 99.4 MB in the beginning and 178.4 MB in the end (delta: -79.0 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,631 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.17 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 97.4 MB in the beginning and 154.1 MB in the end (delta: -56.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.70 ms. Allocated memory is still 199.8 MB. Free memory was 154.1 MB in the beginning and 152.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,633 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 199.8 MB. Free memory was 152.0 MB in the beginning and 150.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,634 INFO L168 Benchmark]: RCFGBuilder took 487.73 ms. Allocated memory is still 199.8 MB. Free memory was 150.6 MB in the beginning and 128.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,634 INFO L168 Benchmark]: TraceAbstraction took 6375.84 ms. Allocated memory was 199.8 MB in the beginning and 291.5 MB in the end (delta: 91.8 MB). Free memory was 127.4 MB in the beginning and 178.4 MB in the end (delta: -51.0 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:27:56,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.17 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 97.4 MB in the beginning and 154.1 MB in the end (delta: -56.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.70 ms. Allocated memory is still 199.8 MB. Free memory was 154.1 MB in the beginning and 152.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 199.8 MB. Free memory was 152.0 MB in the beginning and 150.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 487.73 ms. Allocated memory is still 199.8 MB. Free memory was 150.6 MB in the beginning and 128.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6375.84 ms. Allocated memory was 199.8 MB in the beginning and 291.5 MB in the end (delta: 91.8 MB). Free memory was 127.4 MB in the beginning and 178.4 MB in the end (delta: -51.0 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 79 ProgramPointsBefore, 31 ProgramPointsAfterwards, 71 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 15 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 641 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2585 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 118 SDtfs, 321 SDslu, 331 SDs, 0 SdLazy, 323 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 263 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...