/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/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:34:55,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:34:55,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:34:56,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:34:56,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:34:56,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:34:56,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:34:56,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:34:56,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:34:56,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:34:56,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:34:56,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:34:56,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:34:56,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:34:56,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:34:56,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:34:56,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:34:56,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:34:56,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:34:56,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:34:56,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:34:56,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:34:56,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:34:56,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:34:56,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:34:56,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:34:56,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:34:56,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:34:56,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:34:56,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:34:56,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:34:56,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:34:56,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:34:56,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:34:56,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:34:56,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:34:56,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:34:56,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:34:56,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:34:56,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:34:56,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:34:56,072 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 19:34:56,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:34:56,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:34:56,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:34:56,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:34:56,093 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:34:56,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:34:56,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:34:56,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:34:56,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:34:56,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:34:56,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:34:56,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:34:56,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:34:56,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:34:56,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:34:56,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:34:56,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:34:56,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:34:56,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:34:56,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:34:56,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:34:56,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:34:56,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:34:56,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:34:56,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:34:56,097 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:34:56,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:34:56,098 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:34:56,098 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:34:56,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:34:56,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:34:56,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:34:56,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:34:56,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:34:56,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:34:56,384 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:34:56,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-18 19:34:56,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2515131ec/ca7690bec496434b86cea12a758f6cb1/FLAGf24870e10 [2020-04-18 19:34:57,015 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:34:57,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-18 19:34:57,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2515131ec/ca7690bec496434b86cea12a758f6cb1/FLAGf24870e10 [2020-04-18 19:34:57,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2515131ec/ca7690bec496434b86cea12a758f6cb1 [2020-04-18 19:34:57,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:34:57,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:34:57,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:34:57,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:34:57,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:34:57,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:34:57" (1/1) ... [2020-04-18 19:34:57,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d973e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:57, skipping insertion in model container [2020-04-18 19:34:57,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:34:57" (1/1) ... [2020-04-18 19:34:57,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:34:57,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:34:57,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:34:57,921 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:34:57,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:34:58,058 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:34:58,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58 WrapperNode [2020-04-18 19:34:58,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:34:58,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:34:58,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:34:58,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:34:58,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:34:58,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:34:58,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:34:58,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:34:58,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (1/1) ... [2020-04-18 19:34:58,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:34:58,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:34:58,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:34:58,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:34:58,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (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 19:34:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:34:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:34:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:34:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:34:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:34:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:34:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:34:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:34:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:34:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:34:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 19:34:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 19:34:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:34:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:34:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:34:58,208 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 19:34:58,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:34:58,654 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:34:58,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:34:58 BoogieIcfgContainer [2020-04-18 19:34:58,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:34:58,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:34:58,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:34:58,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:34:58,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:34:57" (1/3) ... [2020-04-18 19:34:58,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227f5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:34:58, skipping insertion in model container [2020-04-18 19:34:58,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:34:58" (2/3) ... [2020-04-18 19:34:58,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227f5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:34:58, skipping insertion in model container [2020-04-18 19:34:58,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:34:58" (3/3) ... [2020-04-18 19:34:58,671 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-04-18 19:34:58,679 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:34:58,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:34:58,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:34:58,686 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:34:58,711 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,712 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,712 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,712 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,713 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,713 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,714 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,714 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,714 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,714 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,715 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,715 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,716 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,716 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,717 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,718 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,718 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,718 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,719 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,719 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,723 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,723 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,724 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,724 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,730 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,730 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,730 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,731 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,734 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,734 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,734 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,734 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,737 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,737 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,737 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,738 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:34:58,752 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 19:34:58,773 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:34:58,773 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:34:58,774 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:34:58,774 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:34:58,774 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:34:58,774 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:34:58,774 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:34:58,774 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:34:58,788 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 19:35:04,739 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47251 states. [2020-04-18 19:35:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 47251 states. [2020-04-18 19:35:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:35:04,815 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:04,816 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] [2020-04-18 19:35:04,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:04,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:04,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1602664477, now seen corresponding path program 1 times [2020-04-18 19:35:04,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:04,833 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [499551953] [2020-04-18 19:35:04,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:04,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2020-04-18 19:35:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 19:35:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:35:04,871 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:04,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:04,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1602664477, now seen corresponding path program 2 times [2020-04-18 19:35:04,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:04,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987717940] [2020-04-18 19:35:04,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:05,455 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 19:35:05,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987717940] [2020-04-18 19:35:05,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:05,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:05,459 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:05,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:05,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2020-04-18 19:35:05,472 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:05,577 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:05,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:35:05,584 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 7 states. [2020-04-18 19:35:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:05,673 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2020-04-18 19:35:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2020-04-18 19:35:05,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:05,675 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [499551953] [2020-04-18 19:35:05,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:05,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:05,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [499551953] [2020-04-18 19:35:05,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:35:05,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:35:05,685 INFO L87 Difference]: Start difference. First operand 47251 states. Second operand 7 states. [2020-04-18 19:35:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:08,161 INFO L93 Difference]: Finished difference Result 111395 states and 474387 transitions. [2020-04-18 19:35:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:35:08,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:35:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:08,505 INFO L225 Difference]: With dead ends: 111395 [2020-04-18 19:35:08,505 INFO L226 Difference]: Without dead ends: 32975 [2020-04-18 19:35:08,507 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 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 19:35:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32975 states. [2020-04-18 19:35:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32975 to 26639. [2020-04-18 19:35:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26639 states. [2020-04-18 19:35:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26639 states to 26639 states and 110503 transitions. [2020-04-18 19:35:10,498 INFO L78 Accepts]: Start accepts. Automaton has 26639 states and 110503 transitions. Word has length 39 [2020-04-18 19:35:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:10,500 INFO L479 AbstractCegarLoop]: Abstraction has 26639 states and 110503 transitions. [2020-04-18 19:35:10,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:35:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 26639 states and 110503 transitions. [2020-04-18 19:35:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:35:10,557 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:10,557 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] [2020-04-18 19:35:10,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1271093092, now seen corresponding path program 1 times [2020-04-18 19:35:10,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:10,558 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [237888837] [2020-04-18 19:35:10,560 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:10,566 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 137 transitions. [2020-04-18 19:35:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 19:35:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:35:10,570 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1271093092, now seen corresponding path program 2 times [2020-04-18 19:35:10,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:10,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574220286] [2020-04-18 19:35:10,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:35:10,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574220286] [2020-04-18 19:35:10,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:10,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:10,825 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:10,829 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:10,840 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 113 transitions. [2020-04-18 19:35:10,840 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:10,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:10,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:35:10,889 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 7 states. [2020-04-18 19:35:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:10,955 INFO L93 Difference]: Finished difference Result 90 states and 137 transitions. [2020-04-18 19:35:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 137 transitions. [2020-04-18 19:35:10,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:10,956 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [237888837] [2020-04-18 19:35:10,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:10,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:10,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [237888837] [2020-04-18 19:35:10,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:35:10,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:10,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:10,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:35:10,959 INFO L87 Difference]: Start difference. First operand 26639 states and 110503 transitions. Second operand 7 states. [2020-04-18 19:35:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:12,833 INFO L93 Difference]: Finished difference Result 39375 states and 161731 transitions. [2020-04-18 19:35:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:35:12,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 19:35:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:12,969 INFO L225 Difference]: With dead ends: 39375 [2020-04-18 19:35:12,970 INFO L226 Difference]: Without dead ends: 31199 [2020-04-18 19:35:12,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 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 19:35:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31199 states. [2020-04-18 19:35:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31199 to 22495. [2020-04-18 19:35:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22495 states. [2020-04-18 19:35:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22495 states to 22495 states and 92695 transitions. [2020-04-18 19:35:14,252 INFO L78 Accepts]: Start accepts. Automaton has 22495 states and 92695 transitions. Word has length 41 [2020-04-18 19:35:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:14,253 INFO L479 AbstractCegarLoop]: Abstraction has 22495 states and 92695 transitions. [2020-04-18 19:35:14,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:35:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 22495 states and 92695 transitions. [2020-04-18 19:35:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:35:14,294 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:14,295 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] [2020-04-18 19:35:14,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:14,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1286609797, now seen corresponding path program 1 times [2020-04-18 19:35:14,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:14,296 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1320267281] [2020-04-18 19:35:14,297 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:14,301 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 403 transitions. [2020-04-18 19:35:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-04-18 19:35:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:35:14,304 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:14,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1286609797, now seen corresponding path program 2 times [2020-04-18 19:35:14,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:14,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501127347] [2020-04-18 19:35:14,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:35:14,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501127347] [2020-04-18 19:35:14,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:14,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:14,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:14,443 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:14,460 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 283 transitions. [2020-04-18 19:35:14,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:14,850 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:35:14,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:35:14,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:35:14,851 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 18 states. [2020-04-18 19:35:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:14,975 INFO L93 Difference]: Finished difference Result 192 states and 403 transitions. [2020-04-18 19:35:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 403 transitions. [2020-04-18 19:35:14,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:14,977 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1320267281] [2020-04-18 19:35:14,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:14,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:14,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1320267281] [2020-04-18 19:35:14,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:35:14,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:14,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:35:14,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:35:14,979 INFO L87 Difference]: Start difference. First operand 22495 states and 92695 transitions. Second operand 18 states. [2020-04-18 19:35:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:15,664 INFO L93 Difference]: Finished difference Result 37095 states and 151083 transitions. [2020-04-18 19:35:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:35:15,665 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-04-18 19:35:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:15,860 INFO L225 Difference]: With dead ends: 37095 [2020-04-18 19:35:15,860 INFO L226 Difference]: Without dead ends: 29207 [2020-04-18 19:35:15,862 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:35:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29207 states. [2020-04-18 19:35:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29207 to 22343. [2020-04-18 19:35:18,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22343 states. [2020-04-18 19:35:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 91591 transitions. [2020-04-18 19:35:18,475 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 91591 transitions. Word has length 43 [2020-04-18 19:35:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:18,476 INFO L479 AbstractCegarLoop]: Abstraction has 22343 states and 91591 transitions. [2020-04-18 19:35:18,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:35:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 91591 transitions. [2020-04-18 19:35:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:35:18,514 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:18,514 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 19:35:18,515 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash 604886969, now seen corresponding path program 1 times [2020-04-18 19:35:18,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:18,515 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [28089444] [2020-04-18 19:35:18,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:18,520 INFO L259 McrAutomatonBuilder]: Finished intersection with 251 states and 552 transitions. [2020-04-18 19:35:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states. [2020-04-18 19:35:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:35:18,522 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:18,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:18,522 INFO L82 PathProgramCache]: Analyzing trace with hash 604886969, now seen corresponding path program 2 times [2020-04-18 19:35:18,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:18,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050391985] [2020-04-18 19:35:18,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:18,675 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 19:35:18,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050391985] [2020-04-18 19:35:18,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:18,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:18,676 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:18,680 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:18,701 INFO L259 McrAutomatonBuilder]: Finished intersection with 152 states and 288 transitions. [2020-04-18 19:35:18,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:18,862 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:35:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:35:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:35:18,863 INFO L87 Difference]: Start difference. First operand 251 states. Second operand 12 states. [2020-04-18 19:35:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:19,339 INFO L93 Difference]: Finished difference Result 299 states and 646 transitions. [2020-04-18 19:35:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 646 transitions. [2020-04-18 19:35:19,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:35:19,340 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1230266489, now seen corresponding path program 3 times [2020-04-18 19:35:19,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:19,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252451061] [2020-04-18 19:35:19,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:19,448 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 19:35:19,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252451061] [2020-04-18 19:35:19,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:19,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:19,451 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:19,454 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:19,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 294 transitions. [2020-04-18 19:35:19,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:19,717 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:35:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:35:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:35:19,718 INFO L87 Difference]: Start difference. First operand 299 states and 646 transitions. Second operand 18 states. [2020-04-18 19:35:20,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:20,139 INFO L93 Difference]: Finished difference Result 324 states and 670 transitions. [2020-04-18 19:35:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 670 transitions. [2020-04-18 19:35:20,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:20,140 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [28089444] [2020-04-18 19:35:20,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:20,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:20,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [28089444] [2020-04-18 19:35:20,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:35:20,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:20,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:35:20,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:35:20,142 INFO L87 Difference]: Start difference. First operand 22343 states and 91591 transitions. Second operand 19 states. [2020-04-18 19:35:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:20,608 INFO L93 Difference]: Finished difference Result 38215 states and 153743 transitions. [2020-04-18 19:35:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:35:20,608 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2020-04-18 19:35:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:20,693 INFO L225 Difference]: With dead ends: 38215 [2020-04-18 19:35:20,694 INFO L226 Difference]: Without dead ends: 26375 [2020-04-18 19:35:20,695 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:35:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26375 states. [2020-04-18 19:35:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26375 to 19351. [2020-04-18 19:35:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19351 states. [2020-04-18 19:35:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19351 states to 19351 states and 77819 transitions. [2020-04-18 19:35:21,629 INFO L78 Accepts]: Start accepts. Automaton has 19351 states and 77819 transitions. Word has length 44 [2020-04-18 19:35:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:21,630 INFO L479 AbstractCegarLoop]: Abstraction has 19351 states and 77819 transitions. [2020-04-18 19:35:21,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:35:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 19351 states and 77819 transitions. [2020-04-18 19:35:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:35:21,665 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:21,665 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 19:35:21,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1295710086, now seen corresponding path program 1 times [2020-04-18 19:35:21,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:21,666 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1163393078] [2020-04-18 19:35:21,667 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:21,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 522 states and 1469 transitions. [2020-04-18 19:35:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states. [2020-04-18 19:35:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:35:21,679 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1758855238, now seen corresponding path program 2 times [2020-04-18 19:35:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:21,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285986064] [2020-04-18 19:35:21,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:21,818 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 19:35:21,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285986064] [2020-04-18 19:35:21,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:21,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:21,819 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:21,825 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:21,887 INFO L259 McrAutomatonBuilder]: Finished intersection with 279 states and 691 transitions. [2020-04-18 19:35:21,887 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:21,970 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:35:21,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:21,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:35:21,971 INFO L87 Difference]: Start difference. First operand 522 states. Second operand 9 states. [2020-04-18 19:35:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:22,085 INFO L93 Difference]: Finished difference Result 522 states and 1469 transitions. [2020-04-18 19:35:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1469 transitions. [2020-04-18 19:35:22,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:22,087 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1163393078] [2020-04-18 19:35:22,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:22,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:35:22,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1163393078] [2020-04-18 19:35:22,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:35:22,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:22,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:35:22,089 INFO L87 Difference]: Start difference. First operand 19351 states and 77819 transitions. Second operand 9 states. [2020-04-18 19:35:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:22,583 INFO L93 Difference]: Finished difference Result 38671 states and 154697 transitions. [2020-04-18 19:35:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:35:22,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-04-18 19:35:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:22,645 INFO L225 Difference]: With dead ends: 38671 [2020-04-18 19:35:22,646 INFO L226 Difference]: Without dead ends: 21063 [2020-04-18 19:35:22,646 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:35:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21063 states. [2020-04-18 19:35:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21063 to 16199. [2020-04-18 19:35:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16199 states. [2020-04-18 19:35:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16199 states to 16199 states and 64777 transitions. [2020-04-18 19:35:23,474 INFO L78 Accepts]: Start accepts. Automaton has 16199 states and 64777 transitions. Word has length 45 [2020-04-18 19:35:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:23,474 INFO L479 AbstractCegarLoop]: Abstraction has 16199 states and 64777 transitions. [2020-04-18 19:35:23,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:35:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 16199 states and 64777 transitions. [2020-04-18 19:35:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:35:23,500 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:23,500 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 19:35:23,500 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:23,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1571469873, now seen corresponding path program 1 times [2020-04-18 19:35:23,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:23,501 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1534313725] [2020-04-18 19:35:23,502 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:23,511 INFO L259 McrAutomatonBuilder]: Finished intersection with 675 states and 1970 transitions. [2020-04-18 19:35:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states. [2020-04-18 19:35:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:35:23,517 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1310062293, now seen corresponding path program 2 times [2020-04-18 19:35:23,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:23,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811546056] [2020-04-18 19:35:23,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:23,660 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 19:35:23,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811546056] [2020-04-18 19:35:23,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:23,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:23,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:23,664 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:23,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 285 states and 702 transitions. [2020-04-18 19:35:23,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:23,772 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:35:23,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:23,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:35:23,773 INFO L87 Difference]: Start difference. First operand 675 states. Second operand 9 states. [2020-04-18 19:35:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:24,240 INFO L93 Difference]: Finished difference Result 786 states and 2140 transitions. [2020-04-18 19:35:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2140 transitions. [2020-04-18 19:35:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:35:24,242 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:24,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1571469873, now seen corresponding path program 3 times [2020-04-18 19:35:24,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:24,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966238693] [2020-04-18 19:35:24,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:24,331 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 19:35:24,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966238693] [2020-04-18 19:35:24,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:24,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:24,332 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:24,335 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:24,374 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 746 transitions. [2020-04-18 19:35:24,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:24,815 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 49 times. [2020-04-18 19:35:24,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:35:24,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:35:24,816 INFO L87 Difference]: Start difference. First operand 786 states and 2140 transitions. Second operand 23 states. [2020-04-18 19:35:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:25,526 INFO L93 Difference]: Finished difference Result 958 states and 2562 transitions. [2020-04-18 19:35:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 2562 transitions. [2020-04-18 19:35:25,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:25,529 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1534313725] [2020-04-18 19:35:25,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:25,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:25,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1534313725] [2020-04-18 19:35:25,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:35:25,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:25,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:35:25,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=1614, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:35:25,531 INFO L87 Difference]: Start difference. First operand 16199 states and 64777 transitions. Second operand 25 states. [2020-04-18 19:35:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:26,112 INFO L93 Difference]: Finished difference Result 29127 states and 115449 transitions. [2020-04-18 19:35:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 19:35:26,112 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-04-18 19:35:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:26,158 INFO L225 Difference]: With dead ends: 29127 [2020-04-18 19:35:26,158 INFO L226 Difference]: Without dead ends: 20199 [2020-04-18 19:35:26,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=635, Invalid=1915, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:35:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20199 states. [2020-04-18 19:35:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20199 to 14375. [2020-04-18 19:35:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14375 states. [2020-04-18 19:35:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14375 states to 14375 states and 56945 transitions. [2020-04-18 19:35:26,797 INFO L78 Accepts]: Start accepts. Automaton has 14375 states and 56945 transitions. Word has length 46 [2020-04-18 19:35:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:26,797 INFO L479 AbstractCegarLoop]: Abstraction has 14375 states and 56945 transitions. [2020-04-18 19:35:26,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:35:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 14375 states and 56945 transitions. [2020-04-18 19:35:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:35:26,817 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:26,817 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] [2020-04-18 19:35:26,817 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:26,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:26,818 INFO L82 PathProgramCache]: Analyzing trace with hash 132919, now seen corresponding path program 1 times [2020-04-18 19:35:26,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:26,818 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [875972427] [2020-04-18 19:35:26,819 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:26,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 1224 states and 4223 transitions. [2020-04-18 19:35:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states. [2020-04-18 19:35:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:35:26,846 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash -107824857, now seen corresponding path program 2 times [2020-04-18 19:35:26,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:26,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170367569] [2020-04-18 19:35:26,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:26,955 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 19:35:26,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170367569] [2020-04-18 19:35:26,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:26,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:26,957 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:26,961 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:27,073 INFO L259 McrAutomatonBuilder]: Finished intersection with 447 states and 1283 transitions. [2020-04-18 19:35:27,073 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:27,152 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:35:27,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:35:27,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:35:27,153 INFO L87 Difference]: Start difference. First operand 1224 states. Second operand 8 states. [2020-04-18 19:35:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:27,306 INFO L93 Difference]: Finished difference Result 1386 states and 4682 transitions. [2020-04-18 19:35:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4682 transitions. [2020-04-18 19:35:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:35:27,309 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:27,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:27,310 INFO L82 PathProgramCache]: Analyzing trace with hash -570970009, now seen corresponding path program 3 times [2020-04-18 19:35:27,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:27,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40659506] [2020-04-18 19:35:27,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:27,403 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 19:35:27,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40659506] [2020-04-18 19:35:27,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:27,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:27,405 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:27,410 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:27,532 INFO L259 McrAutomatonBuilder]: Finished intersection with 496 states and 1439 transitions. [2020-04-18 19:35:27,532 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:27,558 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:35:27,559 INFO L87 Difference]: Start difference. First operand 1386 states and 4682 transitions. Second operand 7 states. [2020-04-18 19:35:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:27,735 INFO L93 Difference]: Finished difference Result 1569 states and 5077 transitions. [2020-04-18 19:35:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 5077 transitions. [2020-04-18 19:35:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:35:27,739 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:35:27,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:27,739 INFO L82 PathProgramCache]: Analyzing trace with hash 132919, now seen corresponding path program 4 times [2020-04-18 19:35:27,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:27,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225733712] [2020-04-18 19:35:27,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:27,837 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 19:35:27,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225733712] [2020-04-18 19:35:27,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:27,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:35:27,839 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:27,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:27,977 INFO L259 McrAutomatonBuilder]: Finished intersection with 452 states and 1311 transitions. [2020-04-18 19:35:27,978 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:28,092 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:35:28,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:35:28,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:35:28,094 INFO L87 Difference]: Start difference. First operand 1569 states and 5077 transitions. Second operand 6 states. [2020-04-18 19:35:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:28,161 INFO L93 Difference]: Finished difference Result 1569 states and 5077 transitions. [2020-04-18 19:35:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 5077 transitions. [2020-04-18 19:35:28,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:28,165 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [875972427] [2020-04-18 19:35:28,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:28,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:35:28,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [875972427] [2020-04-18 19:35:28,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:35:28,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:28,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:35:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:35:28,167 INFO L87 Difference]: Start difference. First operand 14375 states and 56945 transitions. Second operand 14 states. [2020-04-18 19:35:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:29,724 INFO L93 Difference]: Finished difference Result 25631 states and 100295 transitions. [2020-04-18 19:35:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-18 19:35:29,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-04-18 19:35:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:29,772 INFO L225 Difference]: With dead ends: 25631 [2020-04-18 19:35:29,772 INFO L226 Difference]: Without dead ends: 18655 [2020-04-18 19:35:29,774 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=892, Invalid=4078, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 19:35:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18655 states. [2020-04-18 19:35:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18655 to 13811. [2020-04-18 19:35:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13811 states. [2020-04-18 19:35:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13811 states to 13811 states and 54305 transitions. [2020-04-18 19:35:30,099 INFO L78 Accepts]: Start accepts. Automaton has 13811 states and 54305 transitions. Word has length 47 [2020-04-18 19:35:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:30,100 INFO L479 AbstractCegarLoop]: Abstraction has 13811 states and 54305 transitions. [2020-04-18 19:35:30,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:35:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 13811 states and 54305 transitions. [2020-04-18 19:35:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:35:30,120 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:30,120 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 19:35:30,120 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:30,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1732002580, now seen corresponding path program 1 times [2020-04-18 19:35:30,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:30,121 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1973801744] [2020-04-18 19:35:30,123 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:30,154 INFO L259 McrAutomatonBuilder]: Finished intersection with 1575 states and 5600 transitions. [2020-04-18 19:35:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states. [2020-04-18 19:35:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:35:30,166 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1793179012, now seen corresponding path program 2 times [2020-04-18 19:35:30,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:30,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560255396] [2020-04-18 19:35:30,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:30,273 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 19:35:30,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560255396] [2020-04-18 19:35:30,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:30,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:30,274 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:30,279 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:30,323 INFO L259 McrAutomatonBuilder]: Finished intersection with 279 states and 685 transitions. [2020-04-18 19:35:30,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:30,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:35:30,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:35:30,388 INFO L87 Difference]: Start difference. First operand 1575 states. Second operand 9 states. [2020-04-18 19:35:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:30,624 INFO L93 Difference]: Finished difference Result 1881 states and 6449 transitions. [2020-04-18 19:35:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 6449 transitions. [2020-04-18 19:35:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:35:30,627 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:30,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1268857428, now seen corresponding path program 3 times [2020-04-18 19:35:30,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:30,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230073297] [2020-04-18 19:35:30,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:30,714 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 19:35:30,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230073297] [2020-04-18 19:35:30,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:30,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:35:30,715 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:30,720 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:30,771 INFO L259 McrAutomatonBuilder]: Finished intersection with 323 states and 847 transitions. [2020-04-18 19:35:30,771 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:30,786 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:30,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:35:30,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:35:30,787 INFO L87 Difference]: Start difference. First operand 1881 states and 6449 transitions. Second operand 6 states. [2020-04-18 19:35:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:30,868 INFO L93 Difference]: Finished difference Result 2157 states and 7203 transitions. [2020-04-18 19:35:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 7203 transitions. [2020-04-18 19:35:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:35:30,871 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:35:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:30,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1732002580, now seen corresponding path program 4 times [2020-04-18 19:35:30,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:30,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387533377] [2020-04-18 19:35:30,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:30,954 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 19:35:30,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387533377] [2020-04-18 19:35:30,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:30,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:30,955 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:30,958 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:31,010 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 940 transitions. [2020-04-18 19:35:31,010 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:31,087 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:35:31,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:31,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:35:31,088 INFO L87 Difference]: Start difference. First operand 2157 states and 7203 transitions. Second operand 7 states. [2020-04-18 19:35:31,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:31,215 INFO L93 Difference]: Finished difference Result 2157 states and 7203 transitions. [2020-04-18 19:35:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 7203 transitions. [2020-04-18 19:35:31,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:31,219 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1973801744] [2020-04-18 19:35:31,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:31,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:31,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1973801744] [2020-04-18 19:35:31,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:35:31,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:35:31,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:35:31,221 INFO L87 Difference]: Start difference. First operand 13811 states and 54305 transitions. Second operand 15 states. [2020-04-18 19:35:32,474 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-04-18 19:35:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:32,710 INFO L93 Difference]: Finished difference Result 22027 states and 84853 transitions. [2020-04-18 19:35:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-04-18 19:35:32,711 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-04-18 19:35:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:32,750 INFO L225 Difference]: With dead ends: 22027 [2020-04-18 19:35:32,751 INFO L226 Difference]: Without dead ends: 15499 [2020-04-18 19:35:32,752 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=879, Invalid=4523, Unknown=0, NotChecked=0, Total=5402 [2020-04-18 19:35:32,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15499 states. [2020-04-18 19:35:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15499 to 11525. [2020-04-18 19:35:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11525 states. [2020-04-18 19:35:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11525 states to 11525 states and 44207 transitions. [2020-04-18 19:35:33,020 INFO L78 Accepts]: Start accepts. Automaton has 11525 states and 44207 transitions. Word has length 48 [2020-04-18 19:35:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:33,020 INFO L479 AbstractCegarLoop]: Abstraction has 11525 states and 44207 transitions. [2020-04-18 19:35:33,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:35:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11525 states and 44207 transitions. [2020-04-18 19:35:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:35:33,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:33,035 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 19:35:33,036 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:33,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1003171084, now seen corresponding path program 1 times [2020-04-18 19:35:33,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:33,037 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [789030114] [2020-04-18 19:35:33,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:33,072 INFO L259 McrAutomatonBuilder]: Finished intersection with 2091 states and 7627 transitions. [2020-04-18 19:35:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states. [2020-04-18 19:35:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:35:33,095 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:33,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1902750980, now seen corresponding path program 2 times [2020-04-18 19:35:33,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:33,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524914626] [2020-04-18 19:35:33,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:33,196 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 19:35:33,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524914626] [2020-04-18 19:35:33,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:33,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:33,198 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:33,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:33,262 INFO L259 McrAutomatonBuilder]: Finished intersection with 263 states and 643 transitions. [2020-04-18 19:35:33,262 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:33,299 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:33,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:33,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:35:33,300 INFO L87 Difference]: Start difference. First operand 2091 states. Second operand 7 states. [2020-04-18 19:35:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:33,479 INFO L93 Difference]: Finished difference Result 2499 states and 8793 transitions. [2020-04-18 19:35:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 8793 transitions. [2020-04-18 19:35:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:35:33,483 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:33,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1466316236, now seen corresponding path program 3 times [2020-04-18 19:35:33,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:33,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986435056] [2020-04-18 19:35:33,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:33,558 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 19:35:33,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986435056] [2020-04-18 19:35:33,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:33,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:35:33,559 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:33,567 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:33,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 275 states and 689 transitions. [2020-04-18 19:35:33,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:33,626 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:35:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:35:33,626 INFO L87 Difference]: Start difference. First operand 2499 states and 8793 transitions. Second operand 6 states. [2020-04-18 19:35:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:33,703 INFO L93 Difference]: Finished difference Result 2867 states and 9829 transitions. [2020-04-18 19:35:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 9829 transitions. [2020-04-18 19:35:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:35:33,707 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:35:33,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1003171084, now seen corresponding path program 4 times [2020-04-18 19:35:33,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:33,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482936155] [2020-04-18 19:35:33,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:33,805 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 19:35:33,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482936155] [2020-04-18 19:35:33,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:33,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:33,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:33,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:33,887 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 801 transitions. [2020-04-18 19:35:33,888 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:33,997 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:35:33,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:35:33,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:35:33,998 INFO L87 Difference]: Start difference. First operand 2867 states and 9829 transitions. Second operand 8 states. [2020-04-18 19:35:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:34,229 INFO L93 Difference]: Finished difference Result 2867 states and 9829 transitions. [2020-04-18 19:35:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 9829 transitions. [2020-04-18 19:35:34,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:34,235 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [789030114] [2020-04-18 19:35:34,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:34,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:35:34,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [789030114] [2020-04-18 19:35:34,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:35:34,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:34,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:35:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:35:34,237 INFO L87 Difference]: Start difference. First operand 11525 states and 44207 transitions. Second operand 14 states. [2020-04-18 19:35:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:35,141 INFO L93 Difference]: Finished difference Result 12056 states and 45257 transitions. [2020-04-18 19:35:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 19:35:35,141 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-04-18 19:35:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:35,159 INFO L225 Difference]: With dead ends: 12056 [2020-04-18 19:35:35,159 INFO L226 Difference]: Without dead ends: 7520 [2020-04-18 19:35:35,161 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=568, Invalid=3464, Unknown=0, NotChecked=0, Total=4032 [2020-04-18 19:35:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-04-18 19:35:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2020-04-18 19:35:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-04-18 19:35:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 27740 transitions. [2020-04-18 19:35:35,291 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 27740 transitions. Word has length 49 [2020-04-18 19:35:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:35,291 INFO L479 AbstractCegarLoop]: Abstraction has 7520 states and 27740 transitions. [2020-04-18 19:35:35,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:35:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 27740 transitions. [2020-04-18 19:35:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:35:35,301 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:35,301 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] [2020-04-18 19:35:35,302 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:35,302 INFO L82 PathProgramCache]: Analyzing trace with hash 387584019, now seen corresponding path program 1 times [2020-04-18 19:35:35,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:35,302 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1739979328] [2020-04-18 19:35:35,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:35,511 INFO L259 McrAutomatonBuilder]: Finished intersection with 3435 states and 13059 transitions. [2020-04-18 19:35:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states. [2020-04-18 19:35:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:35:35,542 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:35,542 INFO L82 PathProgramCache]: Analyzing trace with hash -813695075, now seen corresponding path program 2 times [2020-04-18 19:35:35,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:35,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101211221] [2020-04-18 19:35:35,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:35,649 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 19:35:35,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101211221] [2020-04-18 19:35:35,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:35,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:35,651 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:35,656 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:35,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 275 states and 665 transitions. [2020-04-18 19:35:35,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:35,760 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:35:35,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:35,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:35:35,761 INFO L87 Difference]: Start difference. First operand 3435 states. Second operand 9 states. [2020-04-18 19:35:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:36,128 INFO L93 Difference]: Finished difference Result 4691 states and 16765 transitions. [2020-04-18 19:35:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 16765 transitions. [2020-04-18 19:35:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:35:36,139 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1545441683, now seen corresponding path program 3 times [2020-04-18 19:35:36,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:36,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48259731] [2020-04-18 19:35:36,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:36,206 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 19:35:36,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48259731] [2020-04-18 19:35:36,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:36,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:35:36,207 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:36,212 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:36,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 287 states and 711 transitions. [2020-04-18 19:35:36,282 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:36,296 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:35:36,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:35:36,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:35:36,297 INFO L87 Difference]: Start difference. First operand 4691 states and 16765 transitions. Second operand 6 states. [2020-04-18 19:35:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:36,398 INFO L93 Difference]: Finished difference Result 5923 states and 20993 transitions. [2020-04-18 19:35:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 20993 transitions. [2020-04-18 19:35:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:35:36,410 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:35:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash 827893835, now seen corresponding path program 4 times [2020-04-18 19:35:36,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:36,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44445851] [2020-04-18 19:35:36,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:36,506 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 19:35:36,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44445851] [2020-04-18 19:35:36,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:36,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:36,507 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:36,512 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:36,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 388 states and 964 transitions. [2020-04-18 19:35:36,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:36,717 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:35:36,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:35:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:35:36,718 INFO L87 Difference]: Start difference. First operand 5923 states and 20993 transitions. Second operand 8 states. [2020-04-18 19:35:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:37,185 INFO L93 Difference]: Finished difference Result 5923 states and 20993 transitions. [2020-04-18 19:35:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 20993 transitions. [2020-04-18 19:35:37,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:37,201 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1739979328] [2020-04-18 19:35:37,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:37,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:35:37,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1739979328] [2020-04-18 19:35:37,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:35:37,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:37,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:35:37,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:35:37,204 INFO L87 Difference]: Start difference. First operand 7520 states and 27740 transitions. Second operand 16 states. [2020-04-18 19:35:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:38,193 INFO L93 Difference]: Finished difference Result 7435 states and 26921 transitions. [2020-04-18 19:35:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 19:35:38,193 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-04-18 19:35:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:38,200 INFO L225 Difference]: With dead ends: 7435 [2020-04-18 19:35:38,200 INFO L226 Difference]: Without dead ends: 3391 [2020-04-18 19:35:38,202 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=675, Invalid=4017, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 19:35:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2020-04-18 19:35:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3081. [2020-04-18 19:35:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2020-04-18 19:35:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 10975 transitions. [2020-04-18 19:35:38,249 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 10975 transitions. Word has length 51 [2020-04-18 19:35:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:38,249 INFO L479 AbstractCegarLoop]: Abstraction has 3081 states and 10975 transitions. [2020-04-18 19:35:38,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:35:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 10975 transitions. [2020-04-18 19:35:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:38,255 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:38,255 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] [2020-04-18 19:35:38,255 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1178693610, now seen corresponding path program 1 times [2020-04-18 19:35:38,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:38,256 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1177575044] [2020-04-18 19:35:38,258 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:38,368 INFO L259 McrAutomatonBuilder]: Finished intersection with 5715 states and 22515 transitions. [2020-04-18 19:35:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5715 states. [2020-04-18 19:35:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:38,411 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:38,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1867014886, now seen corresponding path program 2 times [2020-04-18 19:35:38,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:38,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105182995] [2020-04-18 19:35:38,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:38,475 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 19:35:38,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105182995] [2020-04-18 19:35:38,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:38,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:35:38,476 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:38,482 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:38,797 INFO L259 McrAutomatonBuilder]: Finished intersection with 484 states and 1269 transitions. [2020-04-18 19:35:38,797 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:38,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:35:38,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:35:38,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:35:38,832 INFO L87 Difference]: Start difference. First operand 5715 states. Second operand 6 states. [2020-04-18 19:35:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:39,003 INFO L93 Difference]: Finished difference Result 8035 states and 30751 transitions. [2020-04-18 19:35:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 30751 transitions. [2020-04-18 19:35:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:39,018 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1200077658, now seen corresponding path program 3 times [2020-04-18 19:35:39,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:39,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196481517] [2020-04-18 19:35:39,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:35:39,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196481517] [2020-04-18 19:35:39,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:39,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:39,114 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:39,119 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:39,267 INFO L259 McrAutomatonBuilder]: Finished intersection with 514 states and 1320 transitions. [2020-04-18 19:35:39,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:39,296 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:35:39,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:35:39,297 INFO L87 Difference]: Start difference. First operand 8035 states and 30751 transitions. Second operand 7 states. [2020-04-18 19:35:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:39,663 INFO L93 Difference]: Finished difference Result 12859 states and 48037 transitions. [2020-04-18 19:35:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12859 states and 48037 transitions. [2020-04-18 19:35:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:39,694 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:35:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash -337286070, now seen corresponding path program 4 times [2020-04-18 19:35:39,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:39,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589217561] [2020-04-18 19:35:39,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:39,839 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 19:35:39,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589217561] [2020-04-18 19:35:39,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:39,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:39,841 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:39,851 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:39,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 308 states and 770 transitions. [2020-04-18 19:35:39,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:40,004 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:35:40,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:40,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:35:40,005 INFO L87 Difference]: Start difference. First operand 12859 states and 48037 transitions. Second operand 7 states. [2020-04-18 19:35:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:40,385 INFO L93 Difference]: Finished difference Result 25779 states and 92533 transitions. [2020-04-18 19:35:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 25779 states and 92533 transitions. [2020-04-18 19:35:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:40,417 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:35:40,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:40,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1683981014, now seen corresponding path program 5 times [2020-04-18 19:35:40,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:40,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212932462] [2020-04-18 19:35:40,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:40,515 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 19:35:40,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212932462] [2020-04-18 19:35:40,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:40,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:40,517 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:40,521 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:40,603 INFO L259 McrAutomatonBuilder]: Finished intersection with 461 states and 1135 transitions. [2020-04-18 19:35:40,603 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:40,805 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:35:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:35:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:35:40,806 INFO L87 Difference]: Start difference. First operand 25779 states and 92533 transitions. Second operand 8 states. [2020-04-18 19:35:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:41,488 INFO L93 Difference]: Finished difference Result 25935 states and 92681 transitions. [2020-04-18 19:35:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 25935 states and 92681 transitions. [2020-04-18 19:35:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:41,521 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:35:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:41,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1214546902, now seen corresponding path program 6 times [2020-04-18 19:35:41,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:41,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042816109] [2020-04-18 19:35:41,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:41,632 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 19:35:41,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042816109] [2020-04-18 19:35:41,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:41,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:41,633 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:41,639 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:41,726 INFO L259 McrAutomatonBuilder]: Finished intersection with 426 states and 1164 transitions. [2020-04-18 19:35:41,727 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:41,941 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:35:41,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:35:41,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2193, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:35:41,942 INFO L87 Difference]: Start difference. First operand 25935 states and 92681 transitions. Second operand 12 states. [2020-04-18 19:35:43,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:43,339 INFO L93 Difference]: Finished difference Result 36845 states and 128837 transitions. [2020-04-18 19:35:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 36845 states and 128837 transitions. [2020-04-18 19:35:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:35:43,412 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:35:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1778631208, now seen corresponding path program 7 times [2020-04-18 19:35:43,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:43,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661949691] [2020-04-18 19:35:43,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:43,515 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 19:35:43,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661949691] [2020-04-18 19:35:43,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:43,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:43,516 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:43,521 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:43,606 INFO L259 McrAutomatonBuilder]: Finished intersection with 386 states and 1026 transitions. [2020-04-18 19:35:43,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:43,708 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:35:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=613, Invalid=3943, Unknown=0, NotChecked=0, Total=4556 [2020-04-18 19:35:43,710 INFO L87 Difference]: Start difference. First operand 36845 states and 128837 transitions. Second operand 9 states. [2020-04-18 19:35:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:44,304 INFO L93 Difference]: Finished difference Result 51225 states and 175466 transitions. [2020-04-18 19:35:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 51225 states and 175466 transitions. [2020-04-18 19:35:44,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:44,378 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1177575044] [2020-04-18 19:35:44,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:44,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:35:44,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1177575044] [2020-04-18 19:35:44,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 19:35:44,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:44,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 19:35:44,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=4827, Unknown=0, NotChecked=0, Total=5550 [2020-04-18 19:35:44,381 INFO L87 Difference]: Start difference. First operand 3081 states and 10975 transitions. Second operand 24 states. [2020-04-18 19:35:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:46,199 INFO L93 Difference]: Finished difference Result 4561 states and 16327 transitions. [2020-04-18 19:35:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-04-18 19:35:46,199 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2020-04-18 19:35:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:46,200 INFO L225 Difference]: With dead ends: 4561 [2020-04-18 19:35:46,200 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:35:46,203 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4993 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1693, Invalid=12349, Unknown=0, NotChecked=0, Total=14042 [2020-04-18 19:35:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:35:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:35:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:35:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:35:46,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-04-18 19:35:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:46,204 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:35:46,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 19:35:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:35:46,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:46,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:35:46 BasicIcfg [2020-04-18 19:35:46,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:35:46,210 INFO L168 Benchmark]: Toolchain (without parser) took 48903.84 ms. Allocated memory was 137.9 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 100.4 MB in the beginning and 522.1 MB in the end (delta: -421.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,210 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.02 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 98.5 MB in the beginning and 158.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.87 ms. Allocated memory is still 202.4 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,212 INFO L168 Benchmark]: Boogie Preprocessor took 28.86 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,213 INFO L168 Benchmark]: RCFGBuilder took 520.55 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 131.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,213 INFO L168 Benchmark]: TraceAbstraction took 47546.42 ms. Allocated memory was 202.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 131.0 MB in the beginning and 522.1 MB in the end (delta: -391.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-04-18 19:35:46,216 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.02 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 98.5 MB in the beginning and 158.9 MB in the end (delta: -60.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.87 ms. Allocated memory is still 202.4 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.86 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.55 ms. Allocated memory is still 202.4 MB. Free memory was 154.8 MB in the beginning and 131.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47546.42 ms. Allocated memory was 202.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 131.0 MB in the beginning and 522.1 MB in the end (delta: -391.2 MB). Peak memory consumption was 1.4 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, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 47.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 1295 SDtfs, 8170 SDslu, 9356 SDs, 0 SdLazy, 2063 SolverSat, 993 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2059 GetRequests, 1521 SyntacticMatches, 1 SemanticMatches, 537 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12641 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47251occurred 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: 9.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 48744 StatesRemovedByMinimization, 9 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...