/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:39:54,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:39:54,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:39:54,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:39:54,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:39:54,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:39:54,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:39:55,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:39:55,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:39:55,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:39:55,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:39:55,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:39:55,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:39:55,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:39:55,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:39:55,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:39:55,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:39:55,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:39:55,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:39:55,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:39:55,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:39:55,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:39:55,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:39:55,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:39:55,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:39:55,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:39:55,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:39:55,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:39:55,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:39:55,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:39:55,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:39:55,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:39:55,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:39:55,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:39:55,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:39:55,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:39:55,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:39:55,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:39:55,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:39:55,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:39:55,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:39:55,039 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-NoLbe-McrStrategy.epf [2020-04-18 19:39:55,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:39:55,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:39:55,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:39:55,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:39:55,057 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:39:55,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:39:55,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:39:55,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:39:55,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:39:55,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:39:55,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:39:55,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:39:55,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:39:55,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:39:55,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:39:55,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:39:55,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:39:55,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:39:55,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:39:55,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:39:55,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:39:55,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:39:55,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:39:55,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:39:55,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:39:55,062 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:39:55,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:39:55,062 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:39:55,063 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:39:55,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:39:55,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:39:55,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:39:55,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:39:55,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:39:55,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:39:55,343 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:39:55,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-04-18 19:39:55,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cff9522/ebd5d9478d964cd2a7d536041997fbf8/FLAGd8c568983 [2020-04-18 19:39:55,930 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:39:55,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-04-18 19:39:55,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cff9522/ebd5d9478d964cd2a7d536041997fbf8/FLAGd8c568983 [2020-04-18 19:39:56,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cff9522/ebd5d9478d964cd2a7d536041997fbf8 [2020-04-18 19:39:56,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:39:56,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:39:56,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:39:56,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:39:56,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:39:56,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:56,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d1285e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56, skipping insertion in model container [2020-04-18 19:39:56,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:56,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:39:56,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:39:56,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:39:56,772 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:39:56,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:39:56,926 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:39:56,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56 WrapperNode [2020-04-18 19:39:56,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:39:56,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:39:56,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:39:56,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:39:56,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:56,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:56,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:39:56,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:39:56,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:39:56,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:39:57,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (1/1) ... [2020-04-18 19:39:57,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:39:57,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:39:57,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:39:57,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:39:57,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (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 19:39:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:39:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:39:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:39:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:39:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:39:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:39:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:39:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:39:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:39:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:39:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 19:39:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 19:39:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:39:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:39:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:39:57,091 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 19:39:57,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:39:57,504 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:39:57,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:39:57 BoogieIcfgContainer [2020-04-18 19:39:57,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:39:57,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:39:57,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:39:57,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:39:57,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:39:56" (1/3) ... [2020-04-18 19:39:57,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213dea5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:39:57, skipping insertion in model container [2020-04-18 19:39:57,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:39:56" (2/3) ... [2020-04-18 19:39:57,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213dea5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:39:57, skipping insertion in model container [2020-04-18 19:39:57,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:39:57" (3/3) ... [2020-04-18 19:39:57,524 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-04-18 19:39:57,534 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:39:57,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:39:57,541 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:39:57,542 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:39:57,567 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,568 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,568 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,570 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,571 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,571 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,572 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,572 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,572 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,572 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,573 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,573 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,573 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,574 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,574 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,574 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,575 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,575 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,575 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,576 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,576 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,576 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,577 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,577 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,581 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,582 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,582 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,582 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,590 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,590 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,590 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,590 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,603 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,604 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,609 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,610 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:39:57,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 19:39:57,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:39:57,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:39:57,651 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:39:57,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:39:57,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:39:57,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:39:57,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:39:57,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:39:57,671 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 19:40:02,918 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47252 states. [2020-04-18 19:40:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 47252 states. [2020-04-18 19:40:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:40:02,995 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:02,996 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:02,997 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1175723912, now seen corresponding path program 1 times [2020-04-18 19:40:03,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:03,012 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1537105109] [2020-04-18 19:40:03,029 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:03,046 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2020-04-18 19:40:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-04-18 19:40:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:40:03,050 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:03,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:03,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1175723912, now seen corresponding path program 2 times [2020-04-18 19:40:03,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:03,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711592886] [2020-04-18 19:40:03,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:03,625 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 19:40:03,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711592886] [2020-04-18 19:40:03,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:03,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:03,629 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:03,634 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:03,645 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2020-04-18 19:40:03,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:03,708 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:03,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:03,715 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 7 states. [2020-04-18 19:40:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:03,787 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2020-04-18 19:40:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2020-04-18 19:40:03,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:03,789 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1537105109] [2020-04-18 19:40:03,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:03,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:03,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1537105109] [2020-04-18 19:40:03,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:03,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:03,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:40:03,796 INFO L87 Difference]: Start difference. First operand 47252 states. Second operand 7 states. [2020-04-18 19:40:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:06,586 INFO L93 Difference]: Finished difference Result 97124 states and 412900 transitions. [2020-04-18 19:40:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:40:06,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 19:40:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:06,826 INFO L225 Difference]: With dead ends: 97124 [2020-04-18 19:40:06,826 INFO L226 Difference]: Without dead ends: 28448 [2020-04-18 19:40:06,828 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28448 states. [2020-04-18 19:40:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28448 to 24128. [2020-04-18 19:40:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24128 states. [2020-04-18 19:40:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24128 states to 24128 states and 100604 transitions. [2020-04-18 19:40:08,373 INFO L78 Accepts]: Start accepts. Automaton has 24128 states and 100604 transitions. Word has length 40 [2020-04-18 19:40:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:08,377 INFO L479 AbstractCegarLoop]: Abstraction has 24128 states and 100604 transitions. [2020-04-18 19:40:08,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 24128 states and 100604 transitions. [2020-04-18 19:40:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:08,418 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:08,418 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:08,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:08,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1653000969, now seen corresponding path program 1 times [2020-04-18 19:40:08,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:08,420 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1011684912] [2020-04-18 19:40:08,421 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:08,426 INFO L259 McrAutomatonBuilder]: Finished intersection with 91 states and 138 transitions. [2020-04-18 19:40:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-04-18 19:40:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:40:08,427 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1653000969, now seen corresponding path program 2 times [2020-04-18 19:40:08,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:08,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459236099] [2020-04-18 19:40:08,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:08,600 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 19:40:08,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459236099] [2020-04-18 19:40:08,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:08,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:08,602 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:08,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:08,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 114 transitions. [2020-04-18 19:40:08,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:08,669 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:08,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:08,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:08,670 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 7 states. [2020-04-18 19:40:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:08,752 INFO L93 Difference]: Finished difference Result 91 states and 138 transitions. [2020-04-18 19:40:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 138 transitions. [2020-04-18 19:40:08,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:08,753 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1011684912] [2020-04-18 19:40:08,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:08,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:08,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1011684912] [2020-04-18 19:40:08,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:40:08,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:08,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:08,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:40:08,755 INFO L87 Difference]: Start difference. First operand 24128 states and 100604 transitions. Second operand 7 states. [2020-04-18 19:40:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:09,194 INFO L93 Difference]: Finished difference Result 35000 states and 143960 transitions. [2020-04-18 19:40:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:40:09,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 19:40:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:09,303 INFO L225 Difference]: With dead ends: 35000 [2020-04-18 19:40:09,303 INFO L226 Difference]: Without dead ends: 27272 [2020-04-18 19:40:09,306 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:40:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27272 states. [2020-04-18 19:40:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27272 to 23048. [2020-04-18 19:40:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23048 states. [2020-04-18 19:40:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23048 states to 23048 states and 95600 transitions. [2020-04-18 19:40:11,848 INFO L78 Accepts]: Start accepts. Automaton has 23048 states and 95600 transitions. Word has length 42 [2020-04-18 19:40:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:11,849 INFO L479 AbstractCegarLoop]: Abstraction has 23048 states and 95600 transitions. [2020-04-18 19:40:11,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:40:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 23048 states and 95600 transitions. [2020-04-18 19:40:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:11,893 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:11,894 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:11,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1667841322, now seen corresponding path program 1 times [2020-04-18 19:40:11,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:11,895 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2019862586] [2020-04-18 19:40:11,896 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:11,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 169 states and 340 transitions. [2020-04-18 19:40:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-04-18 19:40:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:11,902 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:11,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1667841322, now seen corresponding path program 2 times [2020-04-18 19:40:11,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:11,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275234333] [2020-04-18 19:40:11,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:12,057 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 19:40:12,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275234333] [2020-04-18 19:40:12,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:12,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:12,058 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:12,063 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:12,075 INFO L259 McrAutomatonBuilder]: Finished intersection with 107 states and 180 transitions. [2020-04-18 19:40:12,076 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:12,132 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:40:12,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:40:12,133 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 8 states. [2020-04-18 19:40:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:12,349 INFO L93 Difference]: Finished difference Result 186 states and 356 transitions. [2020-04-18 19:40:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 356 transitions. [2020-04-18 19:40:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:40:12,351 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:12,352 INFO L82 PathProgramCache]: Analyzing trace with hash 324984480, now seen corresponding path program 3 times [2020-04-18 19:40:12,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:12,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445316027] [2020-04-18 19:40:12,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:12,503 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 19:40:12,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445316027] [2020-04-18 19:40:12,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:12,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:12,504 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:12,509 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:12,521 INFO L259 McrAutomatonBuilder]: Finished intersection with 95 states and 156 transitions. [2020-04-18 19:40:12,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:12,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:40:12,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:12,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:40:12,536 INFO L87 Difference]: Start difference. First operand 186 states and 356 transitions. Second operand 7 states. [2020-04-18 19:40:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:12,600 INFO L93 Difference]: Finished difference Result 186 states and 356 transitions. [2020-04-18 19:40:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 356 transitions. [2020-04-18 19:40:12,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:12,604 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2019862586] [2020-04-18 19:40:12,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:12,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:12,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2019862586] [2020-04-18 19:40:12,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:40:12,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:12,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:40:12,609 INFO L87 Difference]: Start difference. First operand 23048 states and 95600 transitions. Second operand 9 states. [2020-04-18 19:40:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:13,117 INFO L93 Difference]: Finished difference Result 41792 states and 170974 transitions. [2020-04-18 19:40:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:40:13,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-04-18 19:40:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:13,617 INFO L225 Difference]: With dead ends: 41792 [2020-04-18 19:40:13,617 INFO L226 Difference]: Without dead ends: 20568 [2020-04-18 19:40:13,619 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:40:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20568 states. [2020-04-18 19:40:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20568 to 17688. [2020-04-18 19:40:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17688 states. [2020-04-18 19:40:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 72870 transitions. [2020-04-18 19:40:14,300 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 72870 transitions. Word has length 44 [2020-04-18 19:40:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:14,301 INFO L479 AbstractCegarLoop]: Abstraction has 17688 states and 72870 transitions. [2020-04-18 19:40:14,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:40:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 72870 transitions. [2020-04-18 19:40:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:40:14,333 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:14,334 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:14,334 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:14,334 INFO L82 PathProgramCache]: Analyzing trace with hash -65157711, now seen corresponding path program 1 times [2020-04-18 19:40:14,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:14,335 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [41595687] [2020-04-18 19:40:14,336 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:14,341 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 537 transitions. [2020-04-18 19:40:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-04-18 19:40:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:40:14,344 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash -378090667, now seen corresponding path program 2 times [2020-04-18 19:40:14,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:14,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460160383] [2020-04-18 19:40:14,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:14,480 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 19:40:14,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460160383] [2020-04-18 19:40:14,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:14,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:14,482 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:14,487 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:14,507 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 305 transitions. [2020-04-18 19:40:14,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:14,555 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:40:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:40:14,557 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 8 states. [2020-04-18 19:40:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:14,769 INFO L93 Difference]: Finished difference Result 265 states and 557 transitions. [2020-04-18 19:40:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 557 transitions. [2020-04-18 19:40:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:40:14,770 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash -65157711, now seen corresponding path program 3 times [2020-04-18 19:40:14,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:14,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005145436] [2020-04-18 19:40:14,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:14,918 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 19:40:14,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005145436] [2020-04-18 19:40:14,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:14,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:14,919 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:14,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:14,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 137 states and 257 transitions. [2020-04-18 19:40:14,943 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:14,960 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:40:14,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:14,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:40:14,961 INFO L87 Difference]: Start difference. First operand 265 states and 557 transitions. Second operand 7 states. [2020-04-18 19:40:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:15,229 INFO L93 Difference]: Finished difference Result 317 states and 655 transitions. [2020-04-18 19:40:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 655 transitions. [2020-04-18 19:40:15,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:15,231 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [41595687] [2020-04-18 19:40:15,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:15,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:15,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [41595687] [2020-04-18 19:40:15,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:40:15,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:15,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:15,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:40:15,233 INFO L87 Difference]: Start difference. First operand 17688 states and 72870 transitions. Second operand 9 states. [2020-04-18 19:40:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:15,492 INFO L93 Difference]: Finished difference Result 28632 states and 116622 transitions. [2020-04-18 19:40:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:40:15,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-04-18 19:40:15,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:15,550 INFO L225 Difference]: With dead ends: 28632 [2020-04-18 19:40:15,550 INFO L226 Difference]: Without dead ends: 18456 [2020-04-18 19:40:15,551 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:40:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18456 states. [2020-04-18 19:40:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18456 to 15576. [2020-04-18 19:40:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15576 states. [2020-04-18 19:40:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15576 states to 15576 states and 63238 transitions. [2020-04-18 19:40:17,283 INFO L78 Accepts]: Start accepts. Automaton has 15576 states and 63238 transitions. Word has length 45 [2020-04-18 19:40:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:17,284 INFO L479 AbstractCegarLoop]: Abstraction has 15576 states and 63238 transitions. [2020-04-18 19:40:17,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:40:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 15576 states and 63238 transitions. [2020-04-18 19:40:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:17,306 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:17,306 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:17,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:17,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:17,307 INFO L82 PathProgramCache]: Analyzing trace with hash -63664033, now seen corresponding path program 1 times [2020-04-18 19:40:17,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:17,307 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [843237617] [2020-04-18 19:40:17,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:17,314 INFO L259 McrAutomatonBuilder]: Finished intersection with 427 states and 1166 transitions. [2020-04-18 19:40:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states. [2020-04-18 19:40:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:17,318 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash 230799435, now seen corresponding path program 2 times [2020-04-18 19:40:17,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:17,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942725897] [2020-04-18 19:40:17,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:17,423 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 19:40:17,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942725897] [2020-04-18 19:40:17,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:17,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:17,424 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:17,429 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:17,462 INFO L259 McrAutomatonBuilder]: Finished intersection with 229 states and 538 transitions. [2020-04-18 19:40:17,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:17,535 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:40:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:40:17,536 INFO L87 Difference]: Start difference. First operand 427 states. Second operand 9 states. [2020-04-18 19:40:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:17,770 INFO L93 Difference]: Finished difference Result 478 states and 1248 transitions. [2020-04-18 19:40:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1248 transitions. [2020-04-18 19:40:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:40:17,772 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash -63664033, now seen corresponding path program 3 times [2020-04-18 19:40:17,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:17,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806003205] [2020-04-18 19:40:17,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:17,882 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 19:40:17,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806003205] [2020-04-18 19:40:17,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:17,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:17,884 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:17,890 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:17,929 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 490 transitions. [2020-04-18 19:40:17,929 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:17,956 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:40:17,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:17,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:40:17,958 INFO L87 Difference]: Start difference. First operand 478 states and 1248 transitions. Second operand 7 states. [2020-04-18 19:40:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:18,036 INFO L93 Difference]: Finished difference Result 478 states and 1248 transitions. [2020-04-18 19:40:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1248 transitions. [2020-04-18 19:40:18,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:18,038 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [843237617] [2020-04-18 19:40:18,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:18,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:18,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [843237617] [2020-04-18 19:40:18,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:40:18,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:18,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:40:18,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:40:18,040 INFO L87 Difference]: Start difference. First operand 15576 states and 63238 transitions. Second operand 11 states. [2020-04-18 19:40:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:18,713 INFO L93 Difference]: Finished difference Result 36488 states and 144246 transitions. [2020-04-18 19:40:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:40:18,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-04-18 19:40:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:18,757 INFO L225 Difference]: With dead ends: 36488 [2020-04-18 19:40:18,758 INFO L226 Difference]: Without dead ends: 17416 [2020-04-18 19:40:18,759 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1138, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:40:18,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17416 states. [2020-04-18 19:40:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17416 to 11336. [2020-04-18 19:40:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11336 states. [2020-04-18 19:40:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 44756 transitions. [2020-04-18 19:40:19,385 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 44756 transitions. Word has length 46 [2020-04-18 19:40:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:19,385 INFO L479 AbstractCegarLoop]: Abstraction has 11336 states and 44756 transitions. [2020-04-18 19:40:19,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:40:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 44756 transitions. [2020-04-18 19:40:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:40:19,404 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:19,404 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:19,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:19,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1394698080, now seen corresponding path program 1 times [2020-04-18 19:40:19,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:19,405 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1588797085] [2020-04-18 19:40:19,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:19,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 1225 states and 4224 transitions. [2020-04-18 19:40:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states. [2020-04-18 19:40:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:40:19,447 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash -110438772, now seen corresponding path program 2 times [2020-04-18 19:40:19,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:19,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50721718] [2020-04-18 19:40:19,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:19,562 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 19:40:19,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50721718] [2020-04-18 19:40:19,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:19,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:19,566 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:19,571 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:19,668 INFO L259 McrAutomatonBuilder]: Finished intersection with 497 states and 1432 transitions. [2020-04-18 19:40:19,669 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:19,743 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:40:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:40:19,744 INFO L87 Difference]: Start difference. First operand 1225 states. Second operand 9 states. [2020-04-18 19:40:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:19,964 INFO L93 Difference]: Finished difference Result 1378 states and 4572 transitions. [2020-04-18 19:40:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 4572 transitions. [2020-04-18 19:40:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:40:19,967 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:19,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1094636286, now seen corresponding path program 3 times [2020-04-18 19:40:19,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:19,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831176327] [2020-04-18 19:40:19,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:20,070 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 19:40:20,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831176327] [2020-04-18 19:40:20,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:20,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:20,071 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:20,075 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:20,152 INFO L259 McrAutomatonBuilder]: Finished intersection with 457 states and 1316 transitions. [2020-04-18 19:40:20,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:20,186 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:40:20,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:20,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:40:20,187 INFO L87 Difference]: Start difference. First operand 1378 states and 4572 transitions. Second operand 7 states. [2020-04-18 19:40:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:20,373 INFO L93 Difference]: Finished difference Result 1568 states and 4964 transitions. [2020-04-18 19:40:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4964 transitions. [2020-04-18 19:40:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:40:20,376 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:20,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1394698080, now seen corresponding path program 4 times [2020-04-18 19:40:20,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:20,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294028743] [2020-04-18 19:40:20,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:20,469 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 19:40:20,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294028743] [2020-04-18 19:40:20,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:20,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:40:20,470 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:20,474 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:20,564 INFO L259 McrAutomatonBuilder]: Finished intersection with 453 states and 1312 transitions. [2020-04-18 19:40:20,564 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:20,683 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:40:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:40:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:20,685 INFO L87 Difference]: Start difference. First operand 1568 states and 4964 transitions. Second operand 6 states. [2020-04-18 19:40:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:20,759 INFO L93 Difference]: Finished difference Result 1568 states and 4964 transitions. [2020-04-18 19:40:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4964 transitions. [2020-04-18 19:40:20,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:20,762 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1588797085] [2020-04-18 19:40:20,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:20,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:40:20,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1588797085] [2020-04-18 19:40:20,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:40:20,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:20,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:40:20,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:40:20,764 INFO L87 Difference]: Start difference. First operand 11336 states and 44756 transitions. Second operand 15 states. [2020-04-18 19:40:22,226 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-04-18 19:40:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:22,841 INFO L93 Difference]: Finished difference Result 22998 states and 89277 transitions. [2020-04-18 19:40:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-04-18 19:40:22,842 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-04-18 19:40:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:22,886 INFO L225 Difference]: With dead ends: 22998 [2020-04-18 19:40:22,886 INFO L226 Difference]: Without dead ends: 16982 [2020-04-18 19:40:22,890 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1455, Invalid=7101, Unknown=0, NotChecked=0, Total=8556 [2020-04-18 19:40:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16982 states. [2020-04-18 19:40:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16982 to 10972. [2020-04-18 19:40:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10972 states. [2020-04-18 19:40:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10972 states to 10972 states and 43116 transitions. [2020-04-18 19:40:23,174 INFO L78 Accepts]: Start accepts. Automaton has 10972 states and 43116 transitions. Word has length 48 [2020-04-18 19:40:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:23,174 INFO L479 AbstractCegarLoop]: Abstraction has 10972 states and 43116 transitions. [2020-04-18 19:40:23,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:40:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 10972 states and 43116 transitions. [2020-04-18 19:40:23,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:40:23,190 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:23,190 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:23,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:23,191 INFO L82 PathProgramCache]: Analyzing trace with hash -352681890, now seen corresponding path program 1 times [2020-04-18 19:40:23,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:23,191 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [404002061] [2020-04-18 19:40:23,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:23,217 INFO L259 McrAutomatonBuilder]: Finished intersection with 1624 states and 5753 transitions. [2020-04-18 19:40:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states. [2020-04-18 19:40:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:40:23,232 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:23,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1937841040, now seen corresponding path program 2 times [2020-04-18 19:40:23,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:23,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841273078] [2020-04-18 19:40:23,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:23,327 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 19:40:23,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841273078] [2020-04-18 19:40:23,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:23,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:23,328 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:23,333 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:23,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 301 states and 747 transitions. [2020-04-18 19:40:23,383 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:23,416 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:40:23,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:23,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:23,417 INFO L87 Difference]: Start difference. First operand 1624 states. Second operand 7 states. [2020-04-18 19:40:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:23,639 INFO L93 Difference]: Finished difference Result 1954 states and 6654 transitions. [2020-04-18 19:40:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 6654 transitions. [2020-04-18 19:40:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:40:23,643 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:23,643 INFO L82 PathProgramCache]: Analyzing trace with hash -551493326, now seen corresponding path program 3 times [2020-04-18 19:40:23,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:23,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933760503] [2020-04-18 19:40:23,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:23,736 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 19:40:23,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933760503] [2020-04-18 19:40:23,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:23,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:23,737 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:23,741 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:23,804 INFO L259 McrAutomatonBuilder]: Finished intersection with 447 states and 1221 transitions. [2020-04-18 19:40:23,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:23,884 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:40:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:40:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:40:23,885 INFO L87 Difference]: Start difference. First operand 1954 states and 6654 transitions. Second operand 10 states. [2020-04-18 19:40:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:24,082 INFO L93 Difference]: Finished difference Result 2208 states and 7208 transitions. [2020-04-18 19:40:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 7208 transitions. [2020-04-18 19:40:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:40:24,085 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:24,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:24,085 INFO L82 PathProgramCache]: Analyzing trace with hash -352681890, now seen corresponding path program 4 times [2020-04-18 19:40:24,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:24,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647010724] [2020-04-18 19:40:24,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:24,189 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 19:40:24,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647010724] [2020-04-18 19:40:24,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:24,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:24,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:24,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:24,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 387 states and 1037 transitions. [2020-04-18 19:40:24,270 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:24,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 29 times. [2020-04-18 19:40:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:40:24,436 INFO L87 Difference]: Start difference. First operand 2208 states and 7208 transitions. Second operand 8 states. [2020-04-18 19:40:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:24,850 INFO L93 Difference]: Finished difference Result 2208 states and 7208 transitions. [2020-04-18 19:40:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 7208 transitions. [2020-04-18 19:40:24,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:24,854 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [404002061] [2020-04-18 19:40:24,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:24,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:40:24,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [404002061] [2020-04-18 19:40:24,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:40:24,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:40:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 19:40:24,856 INFO L87 Difference]: Start difference. First operand 10972 states and 43116 transitions. Second operand 18 states. [2020-04-18 19:40:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:26,599 INFO L93 Difference]: Finished difference Result 20561 states and 78880 transitions. [2020-04-18 19:40:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-04-18 19:40:26,600 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-04-18 19:40:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:26,631 INFO L225 Difference]: With dead ends: 20561 [2020-04-18 19:40:26,631 INFO L226 Difference]: Without dead ends: 14825 [2020-04-18 19:40:26,634 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2975 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1298, Invalid=7258, Unknown=0, NotChecked=0, Total=8556 [2020-04-18 19:40:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14825 states. [2020-04-18 19:40:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14825 to 9406. [2020-04-18 19:40:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9406 states. [2020-04-18 19:40:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9406 states to 9406 states and 36243 transitions. [2020-04-18 19:40:26,862 INFO L78 Accepts]: Start accepts. Automaton has 9406 states and 36243 transitions. Word has length 49 [2020-04-18 19:40:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:26,862 INFO L479 AbstractCegarLoop]: Abstraction has 9406 states and 36243 transitions. [2020-04-18 19:40:26,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:40:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 9406 states and 36243 transitions. [2020-04-18 19:40:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:40:26,873 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:26,873 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:26,874 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:26,874 INFO L82 PathProgramCache]: Analyzing trace with hash 969848715, now seen corresponding path program 1 times [2020-04-18 19:40:26,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:26,875 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1128871518] [2020-04-18 19:40:26,876 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:26,909 INFO L259 McrAutomatonBuilder]: Finished intersection with 2092 states and 7628 transitions. [2020-04-18 19:40:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states. [2020-04-18 19:40:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:40:26,930 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:26,930 INFO L82 PathProgramCache]: Analyzing trace with hash 771743455, now seen corresponding path program 2 times [2020-04-18 19:40:26,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:26,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055640726] [2020-04-18 19:40:26,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:27,018 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 19:40:27,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055640726] [2020-04-18 19:40:27,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:27,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:27,020 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:27,025 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:27,063 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 768 transitions. [2020-04-18 19:40:27,064 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:27,098 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:40:27,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:40:27,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:40:27,098 INFO L87 Difference]: Start difference. First operand 2092 states. Second operand 7 states. [2020-04-18 19:40:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:27,283 INFO L93 Difference]: Finished difference Result 2524 states and 8846 transitions. [2020-04-18 19:40:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 8846 transitions. [2020-04-18 19:40:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:40:27,287 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash 911789437, now seen corresponding path program 3 times [2020-04-18 19:40:27,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:27,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990267994] [2020-04-18 19:40:27,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:27,387 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 19:40:27,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990267994] [2020-04-18 19:40:27,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:27,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:27,390 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:27,395 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:27,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 468 states and 1270 transitions. [2020-04-18 19:40:27,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:27,558 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:40:27,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:40:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:40:27,559 INFO L87 Difference]: Start difference. First operand 2524 states and 8846 transitions. Second operand 10 states. [2020-04-18 19:40:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:27,791 INFO L93 Difference]: Finished difference Result 3032 states and 10208 transitions. [2020-04-18 19:40:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10208 transitions. [2020-04-18 19:40:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:40:27,796 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1514990639, now seen corresponding path program 4 times [2020-04-18 19:40:27,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:27,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422326890] [2020-04-18 19:40:27,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:28,025 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 19:40:28,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422326890] [2020-04-18 19:40:28,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:28,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:28,027 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:28,036 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:28,434 INFO L259 McrAutomatonBuilder]: Finished intersection with 438 states and 1190 transitions. [2020-04-18 19:40:28,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:28,664 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 36 times. [2020-04-18 19:40:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:28,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:40:28,668 INFO L87 Difference]: Start difference. First operand 3032 states and 10208 transitions. Second operand 9 states. [2020-04-18 19:40:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:29,008 INFO L93 Difference]: Finished difference Result 3032 states and 10208 transitions. [2020-04-18 19:40:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10208 transitions. [2020-04-18 19:40:29,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:29,014 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1128871518] [2020-04-18 19:40:29,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:29,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:40:29,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1128871518] [2020-04-18 19:40:29,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:40:29,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:40:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1524, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:40:29,016 INFO L87 Difference]: Start difference. First operand 9406 states and 36243 transitions. Second operand 19 states. [2020-04-18 19:40:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:30,601 INFO L93 Difference]: Finished difference Result 14735 states and 55097 transitions. [2020-04-18 19:40:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-04-18 19:40:30,601 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-04-18 19:40:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:30,621 INFO L225 Difference]: With dead ends: 14735 [2020-04-18 19:40:30,621 INFO L226 Difference]: Without dead ends: 10163 [2020-04-18 19:40:30,623 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2619 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1057, Invalid=6599, Unknown=0, NotChecked=0, Total=7656 [2020-04-18 19:40:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2020-04-18 19:40:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6499. [2020-04-18 19:40:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6499 states. [2020-04-18 19:40:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 24096 transitions. [2020-04-18 19:40:30,764 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 24096 transitions. Word has length 50 [2020-04-18 19:40:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:30,765 INFO L479 AbstractCegarLoop]: Abstraction has 6499 states and 24096 transitions. [2020-04-18 19:40:30,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:40:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 24096 transitions. [2020-04-18 19:40:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:40:30,776 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:30,776 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:30,776 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:30,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:30,777 INFO L82 PathProgramCache]: Analyzing trace with hash 525596606, now seen corresponding path program 1 times [2020-04-18 19:40:30,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:30,777 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [462481874] [2020-04-18 19:40:30,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:30,840 INFO L259 McrAutomatonBuilder]: Finished intersection with 3436 states and 13060 transitions. [2020-04-18 19:40:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states. [2020-04-18 19:40:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:40:30,879 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:30,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:30,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1293677184, now seen corresponding path program 2 times [2020-04-18 19:40:30,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:30,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391770926] [2020-04-18 19:40:30,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:31,004 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 19:40:31,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391770926] [2020-04-18 19:40:31,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:31,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:31,006 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:31,011 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:31,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 336 states and 830 transitions. [2020-04-18 19:40:31,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:31,129 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:40:31,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:31,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:40:31,130 INFO L87 Difference]: Start difference. First operand 3436 states. Second operand 8 states. [2020-04-18 19:40:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:31,472 INFO L93 Difference]: Finished difference Result 5292 states and 19278 transitions. [2020-04-18 19:40:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 19278 transitions. [2020-04-18 19:40:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:40:31,482 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash 590120094, now seen corresponding path program 3 times [2020-04-18 19:40:31,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:31,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59024128] [2020-04-18 19:40:31,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:40:31,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59024128] [2020-04-18 19:40:31,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:31,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:31,599 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:31,604 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:31,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 308 states and 742 transitions. [2020-04-18 19:40:31,867 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:31,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:40:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:31,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:40:31,889 INFO L87 Difference]: Start difference. First operand 5292 states and 19278 transitions. Second operand 8 states. [2020-04-18 19:40:32,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:32,135 INFO L93 Difference]: Finished difference Result 7064 states and 24320 transitions. [2020-04-18 19:40:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7064 states and 24320 transitions. [2020-04-18 19:40:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:40:32,144 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:32,145 INFO L82 PathProgramCache]: Analyzing trace with hash 41537834, now seen corresponding path program 4 times [2020-04-18 19:40:32,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:32,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020639667] [2020-04-18 19:40:32,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:32,246 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 19:40:32,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020639667] [2020-04-18 19:40:32,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:32,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:32,247 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:32,252 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:32,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 318 states and 763 transitions. [2020-04-18 19:40:32,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:32,345 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:40:32,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:32,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:40:32,346 INFO L87 Difference]: Start difference. First operand 7064 states and 24320 transitions. Second operand 8 states. [2020-04-18 19:40:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:32,715 INFO L93 Difference]: Finished difference Result 10808 states and 36276 transitions. [2020-04-18 19:40:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10808 states and 36276 transitions. [2020-04-18 19:40:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-04-18 19:40:32,727 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:40:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash 401308048, now seen corresponding path program 5 times [2020-04-18 19:40:32,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:32,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883443884] [2020-04-18 19:40:32,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:32,848 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 19:40:32,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883443884] [2020-04-18 19:40:32,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:32,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 19:40:32,849 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:32,854 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:32,919 INFO L259 McrAutomatonBuilder]: Finished intersection with 330 states and 796 transitions. [2020-04-18 19:40:32,919 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:33,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:40:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1914, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 19:40:33,089 INFO L87 Difference]: Start difference. First operand 10808 states and 36276 transitions. Second operand 9 states. [2020-04-18 19:40:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:33,515 INFO L93 Difference]: Finished difference Result 10808 states and 36276 transitions. [2020-04-18 19:40:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10808 states and 36276 transitions. [2020-04-18 19:40:33,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:33,527 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [462481874] [2020-04-18 19:40:33,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:33,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 19:40:33,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [462481874] [2020-04-18 19:40:33,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:40:33,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:33,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:40:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=2969, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 19:40:33,529 INFO L87 Difference]: Start difference. First operand 6499 states and 24096 transitions. Second operand 19 states. [2020-04-18 19:40:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:35,092 INFO L93 Difference]: Finished difference Result 7760 states and 28258 transitions. [2020-04-18 19:40:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-04-18 19:40:35,092 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-04-18 19:40:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:35,097 INFO L225 Difference]: With dead ends: 7760 [2020-04-18 19:40:35,097 INFO L226 Difference]: Without dead ends: 2371 [2020-04-18 19:40:35,100 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4126 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1157, Invalid=9973, Unknown=0, NotChecked=0, Total=11130 [2020-04-18 19:40:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-04-18 19:40:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2371. [2020-04-18 19:40:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2371 states. [2020-04-18 19:40:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 8287 transitions. [2020-04-18 19:40:35,129 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 8287 transitions. Word has length 52 [2020-04-18 19:40:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:35,130 INFO L479 AbstractCegarLoop]: Abstraction has 2371 states and 8287 transitions. [2020-04-18 19:40:35,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:40:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 8287 transitions. [2020-04-18 19:40:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:40:35,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:40:35,133 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:40:35,133 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:40:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2067083925, now seen corresponding path program 1 times [2020-04-18 19:40:35,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:40:35,134 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1127547773] [2020-04-18 19:40:35,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:35,231 INFO L259 McrAutomatonBuilder]: Finished intersection with 5716 states and 22516 transitions. [2020-04-18 19:40:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states. [2020-04-18 19:40:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:40:35,271 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:40:35,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash 535064513, now seen corresponding path program 2 times [2020-04-18 19:40:35,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:35,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174147619] [2020-04-18 19:40:35,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:35,376 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 19:40:35,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174147619] [2020-04-18 19:40:35,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:35,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:35,377 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:35,382 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:35,645 INFO L259 McrAutomatonBuilder]: Finished intersection with 524 states and 1436 transitions. [2020-04-18 19:40:35,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:35,712 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:40:35,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:35,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:40:35,713 INFO L87 Difference]: Start difference. First operand 5716 states. Second operand 9 states. [2020-04-18 19:40:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:36,382 INFO L93 Difference]: Finished difference Result 12012 states and 45016 transitions. [2020-04-18 19:40:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 12012 states and 45016 transitions. [2020-04-18 19:40:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:40:36,398 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:40:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:36,398 INFO L82 PathProgramCache]: Analyzing trace with hash -137323733, now seen corresponding path program 3 times [2020-04-18 19:40:36,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:36,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548461354] [2020-04-18 19:40:36,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:36,502 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 19:40:36,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548461354] [2020-04-18 19:40:36,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:36,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:36,504 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:36,509 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:36,597 INFO L259 McrAutomatonBuilder]: Finished intersection with 396 states and 1032 transitions. [2020-04-18 19:40:36,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:36,628 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:40:36,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:36,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:40:36,629 INFO L87 Difference]: Start difference. First operand 12012 states and 45016 transitions. Second operand 9 states. [2020-04-18 19:40:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:37,209 INFO L93 Difference]: Finished difference Result 25580 states and 93368 transitions. [2020-04-18 19:40:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25580 states and 93368 transitions. [2020-04-18 19:40:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:40:37,238 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:40:37,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:37,238 INFO L82 PathProgramCache]: Analyzing trace with hash 603509453, now seen corresponding path program 4 times [2020-04-18 19:40:37,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:37,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549476795] [2020-04-18 19:40:37,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:37,341 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 19:40:37,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549476795] [2020-04-18 19:40:37,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:37,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:40:37,342 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:37,347 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:37,450 INFO L259 McrAutomatonBuilder]: Finished intersection with 424 states and 1099 transitions. [2020-04-18 19:40:37,450 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:37,503 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:40:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:40:37,505 INFO L87 Difference]: Start difference. First operand 25580 states and 93368 transitions. Second operand 8 states. [2020-04-18 19:40:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:37,965 INFO L93 Difference]: Finished difference Result 35524 states and 126968 transitions. [2020-04-18 19:40:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 35524 states and 126968 transitions. [2020-04-18 19:40:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:40:38,006 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:40:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1529438481, now seen corresponding path program 5 times [2020-04-18 19:40:38,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:38,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050111668] [2020-04-18 19:40:38,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:38,148 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 19:40:38,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050111668] [2020-04-18 19:40:38,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:38,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:40:38,149 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:38,155 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:38,235 INFO L259 McrAutomatonBuilder]: Finished intersection with 348 states and 825 transitions. [2020-04-18 19:40:38,235 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:38,304 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:40:38,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:40:38,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2012, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:40:38,305 INFO L87 Difference]: Start difference. First operand 35524 states and 126968 transitions. Second operand 8 states. [2020-04-18 19:40:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:39,254 INFO L93 Difference]: Finished difference Result 44220 states and 155128 transitions. [2020-04-18 19:40:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 44220 states and 155128 transitions. [2020-04-18 19:40:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-04-18 19:40:39,305 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:40:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:40:39,305 INFO L82 PathProgramCache]: Analyzing trace with hash 725958319, now seen corresponding path program 6 times [2020-04-18 19:40:39,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:40:39,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904486482] [2020-04-18 19:40:39,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:40:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:40:39,412 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 19:40:39,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904486482] [2020-04-18 19:40:39,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:40:39,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 19:40:39,412 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:40:39,416 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:40:39,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 348 states and 835 transitions. [2020-04-18 19:40:39,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:40:39,639 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:40:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:40:39,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=3504, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 19:40:39,640 INFO L87 Difference]: Start difference. First operand 44220 states and 155128 transitions. Second operand 9 states. [2020-04-18 19:40:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:40,488 INFO L93 Difference]: Finished difference Result 44504 states and 155396 transitions. [2020-04-18 19:40:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 44504 states and 155396 transitions. [2020-04-18 19:40:40,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:40,562 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1127547773] [2020-04-18 19:40:40,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:40:40,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 19:40:40,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1127547773] [2020-04-18 19:40:40,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 19:40:40,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:40:40,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 19:40:40,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=5217, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 19:40:40,564 INFO L87 Difference]: Start difference. First operand 2371 states and 8287 transitions. Second operand 22 states. [2020-04-18 19:40:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:40:41,519 INFO L93 Difference]: Finished difference Result 2209 states and 7693 transitions. [2020-04-18 19:40:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 19:40:41,519 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-04-18 19:40:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:40:41,519 INFO L225 Difference]: With dead ends: 2209 [2020-04-18 19:40:41,519 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:40:41,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1294, Invalid=9212, Unknown=0, NotChecked=0, Total=10506 [2020-04-18 19:40:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:40:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:40:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:40:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:40:41,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-04-18 19:40:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:40:41,521 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:40:41,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 19:40:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:40:41,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:40:41,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:40:41 BasicIcfg [2020-04-18 19:40:41,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:40:41,527 INFO L168 Benchmark]: Toolchain (without parser) took 45308.61 ms. Allocated memory was 136.3 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 99.4 MB in the beginning and 680.9 MB in the end (delta: -581.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,528 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.94 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 97.4 MB in the beginning and 155.2 MB in the end (delta: -57.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.70 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 153.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,530 INFO L168 Benchmark]: Boogie Preprocessor took 27.53 ms. Allocated memory is still 201.3 MB. Free memory was 153.1 MB in the beginning and 151.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,530 INFO L168 Benchmark]: RCFGBuilder took 488.82 ms. Allocated memory is still 201.3 MB. Free memory was 151.7 MB in the beginning and 127.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,531 INFO L168 Benchmark]: TraceAbstraction took 44010.10 ms. Allocated memory was 201.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 127.4 MB in the beginning and 680.9 MB in the end (delta: -553.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-04-18 19:40:41,534 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 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.94 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 97.4 MB in the beginning and 155.2 MB in the end (delta: -57.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.70 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 153.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.53 ms. Allocated memory is still 201.3 MB. Free memory was 153.1 MB in the beginning and 151.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.82 ms. Allocated memory is still 201.3 MB. Free memory was 151.7 MB in the beginning and 127.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44010.10 ms. Allocated memory was 201.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 127.4 MB in the beginning and 680.9 MB in the end (delta: -553.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 1243 SDtfs, 6736 SDslu, 9164 SDs, 0 SdLazy, 2154 SolverSat, 813 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2211 GetRequests, 1625 SyntacticMatches, 0 SemanticMatches, 586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17516 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47252occurred 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: 7.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 35477 StatesRemovedByMinimization, 8 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...