/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:11:14,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:11:14,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:11:14,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:11:14,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:11:14,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:11:14,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:11:14,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:11:14,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:11:14,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:11:14,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:11:14,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:11:14,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:11:14,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:11:14,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:11:14,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:11:14,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:11:14,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:11:14,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:11:14,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:11:14,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:11:14,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:11:14,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:11:14,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:11:14,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:11:14,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:11:14,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:11:14,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:11:14,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:11:14,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:11:14,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:11:14,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:11:14,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:11:14,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:11:14,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:11:14,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:11:14,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:11:14,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:11:14,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:11:14,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:11:14,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:11:14,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:11:15,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:11:15,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:11:15,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:11:15,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:11:15,035 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:11:15,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:11:15,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:11:15,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:11:15,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:11:15,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:11:15,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:11:15,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:11:15,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:11:15,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:11:15,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:11:15,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:11:15,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:11:15,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:11:15,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:11:15,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:11:15,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:11:15,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:11:15,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:11:15,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:11:15,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:11:15,040 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:11:15,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:11:15,041 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:11:15,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:11:15,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:11:15,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:11:15,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:11:15,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:11:15,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:11:15,365 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:11:15,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 11:11:15,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5bf11624/def16f7751f847b99ac3497ee6385694/FLAGf0360270d [2020-04-18 11:11:15,949 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:11:15,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 11:11:15,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5bf11624/def16f7751f847b99ac3497ee6385694/FLAGf0360270d [2020-04-18 11:11:16,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5bf11624/def16f7751f847b99ac3497ee6385694 [2020-04-18 11:11:16,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:11:16,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:11:16,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:11:16,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:11:16,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:11:16,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:16,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc23754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16, skipping insertion in model container [2020-04-18 11:11:16,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:16,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:11:16,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:11:16,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:11:16,842 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:11:16,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:11:16,974 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:11:16,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16 WrapperNode [2020-04-18 11:11:16,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:11:16,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:11:16,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:11:16,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:11:16,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:11:17,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:11:17,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:11:17,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:11:17,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... [2020-04-18 11:11:17,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:11:17,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:11:17,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:11:17,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:11:17,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:11:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:11:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:11:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:11:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:11:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:11:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:11:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:11:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:11:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:11:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:11:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:11:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:11:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:11:17,129 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:11:17,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:11:17,544 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:11:17,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:11:17 BoogieIcfgContainer [2020-04-18 11:11:17,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:11:17,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:11:17,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:11:17,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:11:17,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:11:16" (1/3) ... [2020-04-18 11:11:17,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec1e205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:11:17, skipping insertion in model container [2020-04-18 11:11:17,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:11:16" (2/3) ... [2020-04-18 11:11:17,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec1e205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:11:17, skipping insertion in model container [2020-04-18 11:11:17,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:11:17" (3/3) ... [2020-04-18 11:11:17,559 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-04-18 11:11:17,569 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:11:17,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:11:17,575 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:11:17,576 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:11:17,601 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,602 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,602 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,602 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,603 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,603 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,604 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,604 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,605 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,605 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,605 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,605 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,606 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,606 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,606 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,610 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,611 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,611 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,611 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,618 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,618 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,619 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,619 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,626 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,626 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,626 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,627 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:11:17,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:11:17,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:11:17,657 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:11:17,657 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:11:17,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:11:17,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:11:17,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:11:17,658 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:11:17,658 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:11:17,674 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 11:11:17,676 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:11:17,723 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:11:17,723 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:11:17,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:11:17,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:11:17,755 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:11:17,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:11:17,756 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:11:17,758 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:11:17,759 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:11:19,678 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 11:11:19,679 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 11:11:19,683 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 11:11:19,710 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:11:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:11:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:11:19,721 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:19,722 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:19,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:19,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 11:11:19,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:19,738 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [180021053] [2020-04-18 11:11:19,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:19,770 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:11:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:11:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:11:19,773 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:19,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 11:11:19,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:19,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579783328] [2020-04-18 11:11:19,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:20,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579783328] [2020-04-18 11:11:20,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:20,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:11:20,047 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:20,048 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,054 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:11:20,055 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:20,070 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:20,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:20,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,077 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:11:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,082 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:11:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:11:20,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:20,084 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [180021053] [2020-04-18 11:11:20,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:20,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:11:20,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [180021053] [2020-04-18 11:11:20,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:11:20,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:20,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,093 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:11:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,156 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 11:11:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:11:20,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:11:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:20,191 INFO L225 Difference]: With dead ends: 282 [2020-04-18 11:11:20,191 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 11:11:20,193 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 11:11:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 11:11:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 11:11:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 11:11:20,262 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 11:11:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:20,263 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 11:11:20,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:11:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 11:11:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:11:20,265 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:20,265 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:20,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-18 11:11:20,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:20,266 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [167446924] [2020-04-18 11:11:20,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 11:11:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:11:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:11:20,268 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:20,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,269 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 2 times [2020-04-18 11:11:20,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:20,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293720568] [2020-04-18 11:11:20,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:20,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293720568] [2020-04-18 11:11:20,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:20,334 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:20,335 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,337 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:11:20,338 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:20,385 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:11:20,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:20,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:11:20,386 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-04-18 11:11:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,399 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:11:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 11:11:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:11:20,399 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,400 INFO L82 PathProgramCache]: Analyzing trace with hash -225370979, now seen corresponding path program 3 times [2020-04-18 11:11:20,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:20,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499851230] [2020-04-18 11:11:20,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:20,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499851230] [2020-04-18 11:11:20,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:20,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:20,475 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:20,476 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:11:20,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:20,485 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:20,486 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-04-18 11:11:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,489 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:11:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 11:11:20,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:20,490 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [167446924] [2020-04-18 11:11:20,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:20,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:11:20,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [167446924] [2020-04-18 11:11:20,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:11:20,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:20,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:11:20,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:20,492 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 5 states. [2020-04-18 11:11:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,539 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-18 11:11:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:11:20,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:11:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:20,543 INFO L225 Difference]: With dead ends: 202 [2020-04-18 11:11:20,543 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 11:11:20,548 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 11:11:20,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 11:11:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 11:11:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 11:11:20,580 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-18 11:11:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:20,581 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 11:11:20,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:11:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 11:11:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:11:20,582 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:20,583 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:20,583 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:20,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-04-18 11:11:20,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:20,584 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [79312348] [2020-04-18 11:11:20,584 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 11:11:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 11:11:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:11:20,586 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 2 times [2020-04-18 11:11:20,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:20,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326527605] [2020-04-18 11:11:20,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:20,670 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 11:11:20,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326527605] [2020-04-18 11:11:20,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:20,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:11:20,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:20,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,676 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 11:11:20,676 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:20,691 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:20,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:20,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,692 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 11:11:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,693 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-04-18 11:11:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-04-18 11:11:20,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:20,694 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [79312348] [2020-04-18 11:11:20,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:20,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:11:20,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [79312348] [2020-04-18 11:11:20,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:11:20,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,695 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 11:11:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,702 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-18 11:11:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:11:20,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:11:20,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:20,705 INFO L225 Difference]: With dead ends: 194 [2020-04-18 11:11:20,705 INFO L226 Difference]: Without dead ends: 194 [2020-04-18 11:11:20,705 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-18 11:11:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-18 11:11:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-18 11:11:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-18 11:11:20,756 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-18 11:11:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:20,758 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-18 11:11:20,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:11:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-18 11:11:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:11:20,760 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:20,760 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:20,760 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 11:11:20,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:20,764 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [246534766] [2020-04-18 11:11:20,765 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:11:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:11:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:11:20,767 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1834241260, now seen corresponding path program 2 times [2020-04-18 11:11:20,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:20,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427697640] [2020-04-18 11:11:20,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:20,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427697640] [2020-04-18 11:11:20,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:20,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:20,828 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:20,829 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,831 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:11:20,831 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:20,835 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:20,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:20,835 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:11:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,839 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:11:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:11:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:11:20,839 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:20,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 3 times [2020-04-18 11:11:20,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:20,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200606909] [2020-04-18 11:11:20,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:20,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200606909] [2020-04-18 11:11:20,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:20,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:20,958 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:20,959 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:20,962 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 11:11:20,962 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:20,982 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:20,983 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 11:11:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:20,996 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 11:11:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 11:11:20,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:20,997 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [246534766] [2020-04-18 11:11:20,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:20,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:11:20,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [246534766] [2020-04-18 11:11:20,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:11:20,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:11:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:11:20,999 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-04-18 11:11:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,090 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-04-18 11:11:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 11:11:21,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:11:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:21,094 INFO L225 Difference]: With dead ends: 225 [2020-04-18 11:11:21,094 INFO L226 Difference]: Without dead ends: 161 [2020-04-18 11:11:21,094 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:11:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-04-18 11:11:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-04-18 11:11:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-04-18 11:11:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-04-18 11:11:21,112 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-04-18 11:11:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:21,112 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-04-18 11:11:21,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:11:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-04-18 11:11:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:21,116 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:21,116 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:21,117 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-18 11:11:21,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:21,117 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [387019513] [2020-04-18 11:11:21,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,121 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 11:11:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 11:11:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:21,124 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1026920870, now seen corresponding path program 2 times [2020-04-18 11:11:21,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028087260] [2020-04-18 11:11:21,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028087260] [2020-04-18 11:11:21,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:21,177 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,178 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,180 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:11:21,180 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,185 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:21,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:21,186 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-04-18 11:11:21,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,189 INFO L93 Difference]: Finished difference Result 40 states and 67 transitions. [2020-04-18 11:11:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-04-18 11:11:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:21,190 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1026922250, now seen corresponding path program 3 times [2020-04-18 11:11:21,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692253088] [2020-04-18 11:11:21,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692253088] [2020-04-18 11:11:21,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:21,250 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,250 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,253 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 11:11:21,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,269 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:21,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:21,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:21,270 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-04-18 11:11:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,295 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 11:11:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 11:11:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:11:21,296 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:11:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 4 times [2020-04-18 11:11:21,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027696522] [2020-04-18 11:11:21,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027696522] [2020-04-18 11:11:21,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:21,368 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,368 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:11:21,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,402 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:21,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:21,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:11:21,403 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand 6 states. [2020-04-18 11:11:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,425 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 11:11:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 11:11:21,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:21,426 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [387019513] [2020-04-18 11:11:21,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:21,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:11:21,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [387019513] [2020-04-18 11:11:21,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:11:21,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:21,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:11:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:11:21,428 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 7 states. [2020-04-18 11:11:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,527 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-04-18 11:11:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:11:21,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 11:11:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:21,529 INFO L225 Difference]: With dead ends: 160 [2020-04-18 11:11:21,529 INFO L226 Difference]: Without dead ends: 123 [2020-04-18 11:11:21,529 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 11:11:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-04-18 11:11:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-04-18 11:11:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-04-18 11:11:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-04-18 11:11:21,535 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-04-18 11:11:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:21,536 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-04-18 11:11:21,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:11:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-04-18 11:11:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:21,537 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:21,538 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:21,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-18 11:11:21,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:21,539 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [862122663] [2020-04-18 11:11:21,541 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 11:11:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 11:11:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:21,544 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:21,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,545 INFO L82 PathProgramCache]: Analyzing trace with hash 971527177, now seen corresponding path program 2 times [2020-04-18 11:11:21,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183362342] [2020-04-18 11:11:21,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183362342] [2020-04-18 11:11:21,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:21,601 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 11:11:21,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,610 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:21,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:21,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:21,610 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 11:11:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,613 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 11:11:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 11:11:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:21,614 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,615 INFO L82 PathProgramCache]: Analyzing trace with hash 970144267, now seen corresponding path program 3 times [2020-04-18 11:11:21,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072803068] [2020-04-18 11:11:21,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072803068] [2020-04-18 11:11:21,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:21,670 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,671 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 11:11:21,674 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,687 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:21,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:21,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:11:21,687 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 4 states. [2020-04-18 11:11:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,711 INFO L93 Difference]: Finished difference Result 89 states and 160 transitions. [2020-04-18 11:11:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 160 transitions. [2020-04-18 11:11:21,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:21,712 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:11:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1873050359, now seen corresponding path program 4 times [2020-04-18 11:11:21,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884558346] [2020-04-18 11:11:21,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884558346] [2020-04-18 11:11:21,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:21,795 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,796 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,798 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 11:11:21,798 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,836 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:21,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:21,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:11:21,837 INFO L87 Difference]: Start difference. First operand 89 states and 160 transitions. Second operand 6 states. [2020-04-18 11:11:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:21,883 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 11:11:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 11:11:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:11:21,884 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:11:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:21,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 5 times [2020-04-18 11:11:21,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:21,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396131246] [2020-04-18 11:11:21,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:21,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396131246] [2020-04-18 11:11:21,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:21,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:21,948 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:21,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:21,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 11:11:21,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:21,978 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:21,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:11:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:11:21,978 INFO L87 Difference]: Start difference. First operand 91 states and 161 transitions. Second operand 7 states. [2020-04-18 11:11:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,041 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 11:11:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 11:11:22,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:22,042 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [862122663] [2020-04-18 11:11:22,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:22,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:11:22,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [862122663] [2020-04-18 11:11:22,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:11:22,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:22,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:11:22,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:11:22,044 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 8 states. [2020-04-18 11:11:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,142 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-18 11:11:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:11:22,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 11:11:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:22,144 INFO L225 Difference]: With dead ends: 118 [2020-04-18 11:11:22,144 INFO L226 Difference]: Without dead ends: 108 [2020-04-18 11:11:22,145 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 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 11:11:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-18 11:11:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-18 11:11:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-18 11:11:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-18 11:11:22,149 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-18 11:11:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:22,149 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-18 11:11:22,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:11:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-18 11:11:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,150 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:11:22,151 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:11:22,151 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:11:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 11:11:22,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:11:22,152 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1508205238] [2020-04-18 11:11:22,152 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:22,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:11:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:11:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,160 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:11:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 11:11:22,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:22,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600281139] [2020-04-18 11:11:22,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:22,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600281139] [2020-04-18 11:11:22,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:22,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:22,185 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:22,186 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:22,193 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 95 transitions. [2020-04-18 11:11:22,193 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:22,198 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:11:22,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:11:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:11:22,199 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 11:11:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,205 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 11:11:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 11:11:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,207 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:11:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 11:11:22,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:22,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672281063] [2020-04-18 11:11:22,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:22,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672281063] [2020-04-18 11:11:22,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:22,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:22,243 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:22,244 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:22,253 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 113 transitions. [2020-04-18 11:11:22,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:22,298 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:11:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:22,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:11:22,299 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 6 states. [2020-04-18 11:11:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,345 INFO L93 Difference]: Finished difference Result 448 states and 1122 transitions. [2020-04-18 11:11:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1122 transitions. [2020-04-18 11:11:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,347 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:11:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,347 INFO L82 PathProgramCache]: Analyzing trace with hash 219088266, now seen corresponding path program 4 times [2020-04-18 11:11:22,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:22,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707003092] [2020-04-18 11:11:22,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:22,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707003092] [2020-04-18 11:11:22,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:22,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:22,387 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:22,388 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:22,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 83 transitions. [2020-04-18 11:11:22,394 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:22,484 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 11:11:22,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:22,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:11:22,485 INFO L87 Difference]: Start difference. First operand 448 states and 1122 transitions. Second operand 6 states. [2020-04-18 11:11:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,519 INFO L93 Difference]: Finished difference Result 670 states and 1595 transitions. [2020-04-18 11:11:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1595 transitions. [2020-04-18 11:11:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,521 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:11:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash 273605796, now seen corresponding path program 5 times [2020-04-18 11:11:22,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:22,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970879046] [2020-04-18 11:11:22,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:22,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970879046] [2020-04-18 11:11:22,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:22,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:22,575 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:22,577 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:22,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-04-18 11:11:22,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:22,617 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:22,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:22,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:11:22,619 INFO L87 Difference]: Start difference. First operand 670 states and 1595 transitions. Second operand 4 states. [2020-04-18 11:11:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,682 INFO L93 Difference]: Finished difference Result 928 states and 2059 transitions. [2020-04-18 11:11:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2059 transitions. [2020-04-18 11:11:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,685 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:11:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash -287452954, now seen corresponding path program 6 times [2020-04-18 11:11:22,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:22,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790885524] [2020-04-18 11:11:22,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:22,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790885524] [2020-04-18 11:11:22,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:22,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:11:22,753 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:22,755 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:22,763 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 81 transitions. [2020-04-18 11:11:22,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:22,823 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:11:22,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:11:22,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:11:22,824 INFO L87 Difference]: Start difference. First operand 928 states and 2059 transitions. Second operand 6 states. [2020-04-18 11:11:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:22,956 INFO L93 Difference]: Finished difference Result 998 states and 2142 transitions. [2020-04-18 11:11:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2142 transitions. [2020-04-18 11:11:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:22,961 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:11:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1691795752, now seen corresponding path program 7 times [2020-04-18 11:11:22,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:22,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309326941] [2020-04-18 11:11:22,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:23,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309326941] [2020-04-18 11:11:23,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:23,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:11:23,056 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:23,057 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:23,062 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 11:11:23,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:23,113 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:11:23,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:11:23,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:11:23,114 INFO L87 Difference]: Start difference. First operand 998 states and 2142 transitions. Second operand 7 states. [2020-04-18 11:11:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:23,238 INFO L93 Difference]: Finished difference Result 1006 states and 2146 transitions. [2020-04-18 11:11:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 2146 transitions. [2020-04-18 11:11:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:23,241 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:11:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:23,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 8 times [2020-04-18 11:11:23,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:23,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326098011] [2020-04-18 11:11:23,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:23,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326098011] [2020-04-18 11:11:23,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:23,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:11:23,280 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:23,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:23,284 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-04-18 11:11:23,284 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:23,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:11:23,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:11:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:11:23,362 INFO L87 Difference]: Start difference. First operand 1006 states and 2146 transitions. Second operand 5 states. [2020-04-18 11:11:23,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:23,420 INFO L93 Difference]: Finished difference Result 1412 states and 2920 transitions. [2020-04-18 11:11:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2920 transitions. [2020-04-18 11:11:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:11:23,424 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:11:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:11:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 9 times [2020-04-18 11:11:23,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:11:23,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548452406] [2020-04-18 11:11:23,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:11:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:11:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:11:23,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548452406] [2020-04-18 11:11:23,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:11:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:11:23,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:11:23,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:11:23,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 21 transitions. [2020-04-18 11:11:23,472 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:11:23,527 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:11:23,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:11:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-04-18 11:11:23,528 INFO L87 Difference]: Start difference. First operand 1412 states and 2920 transitions. Second operand 4 states. [2020-04-18 11:11:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:23,568 INFO L93 Difference]: Finished difference Result 2075 states and 4253 transitions. [2020-04-18 11:11:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 4253 transitions. [2020-04-18 11:11:23,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:23,574 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1508205238] [2020-04-18 11:11:23,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:11:23,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:11:23,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1508205238] [2020-04-18 11:11:23,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-18 11:11:23,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:11:23,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 11:11:23,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:11:23,577 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 21 states. [2020-04-18 11:11:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:11:26,299 INFO L93 Difference]: Finished difference Result 313 states and 618 transitions. [2020-04-18 11:11:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-04-18 11:11:26,299 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 17 [2020-04-18 11:11:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:11:26,300 INFO L225 Difference]: With dead ends: 313 [2020-04-18 11:11:26,300 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:11:26,305 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1799, Invalid=11541, Unknown=0, NotChecked=0, Total=13340 [2020-04-18 11:11:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:11:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:11:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:11:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:11:26,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:11:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:11:26,306 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:11:26,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-18 11:11:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:11:26,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:11:26,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:11:26 BasicIcfg [2020-04-18 11:11:26,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:11:26,312 INFO L168 Benchmark]: Toolchain (without parser) took 10060.19 ms. Allocated memory was 138.4 MB in the beginning and 314.6 MB in the end (delta: 176.2 MB). Free memory was 101.2 MB in the beginning and 164.3 MB in the end (delta: -63.1 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,313 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 160.0 MB in the end (delta: -60.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.26 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,315 INFO L168 Benchmark]: Boogie Preprocessor took 28.86 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,315 INFO L168 Benchmark]: RCFGBuilder took 493.40 ms. Allocated memory is still 203.4 MB. Free memory was 156.7 MB in the beginning and 134.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,316 INFO L168 Benchmark]: TraceAbstraction took 8759.00 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 133.6 MB in the beginning and 164.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:11:26,319 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 160.0 MB in the end (delta: -60.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.26 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 158.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.86 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.40 ms. Allocated memory is still 203.4 MB. Free memory was 156.7 MB in the beginning and 134.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8759.00 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 133.6 MB in the beginning and 164.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 159 SDtfs, 397 SDslu, 602 SDs, 0 SdLazy, 1084 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4677 ImplicationChecksByTransitivity, 2.4s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...