/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:04:48,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:04:48,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:04:48,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:04:48,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:04:48,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:04:48,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:04:48,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:04:48,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:04:48,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:04:48,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:04:48,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:04:48,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:04:48,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:04:48,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:04:48,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:04:48,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:04:48,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:04:48,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:04:48,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:04:48,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:04:48,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:04:48,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:04:48,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:04:48,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:04:48,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:04:48,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:04:48,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:04:48,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:04:48,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:04:48,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:04:48,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:04:48,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:04:48,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:04:48,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:04:48,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:04:48,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:04:48,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:04:48,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:04:48,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:04:48,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:04:48,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:04:48,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:04:48,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:04:48,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:04:48,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:04:48,196 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:04:48,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:04:48,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:04:48,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:04:48,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:04:48,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:04:48,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:04:48,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:04:48,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:04:48,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:04:48,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:04:48,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:04:48,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:04:48,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:04:48,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:04:48,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:04:48,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:04:48,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:04:48,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:04:48,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:04:48,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:04:48,202 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:04:48,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:04:48,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:04:48,202 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:04:48,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:04:48,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:04:48,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:04:48,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:04:48,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:04:48,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:04:48,536 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:04:48,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-04-18 15:04:48,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7545ff474/6de845ee52a843acafbd4cd3371379e7/FLAG576c9961c [2020-04-18 15:04:49,175 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:04:49,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2020-04-18 15:04:49,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7545ff474/6de845ee52a843acafbd4cd3371379e7/FLAG576c9961c [2020-04-18 15:04:49,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7545ff474/6de845ee52a843acafbd4cd3371379e7 [2020-04-18 15:04:49,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:04:49,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:04:49,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:04:49,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:04:49,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:04:49,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:04:49" (1/1) ... [2020-04-18 15:04:49,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf7b22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:49, skipping insertion in model container [2020-04-18 15:04:49,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:04:49" (1/1) ... [2020-04-18 15:04:49,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:04:49,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:04:50,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:04:50,167 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:04:50,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:04:50,307 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:04:50,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50 WrapperNode [2020-04-18 15:04:50,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:04:50,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:04:50,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:04:50,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:04:50,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:04:50,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:04:50,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:04:50,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:04:50,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... [2020-04-18 15:04:50,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:04:50,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:04:50,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:04:50,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:04:50,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:04:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:04:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:04:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:04:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:04:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:04:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:04:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:04:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:04:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:04:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:04:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:04:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:04:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:04:50,491 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:04:50,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:04:50,906 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:04:50,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:04:50 BoogieIcfgContainer [2020-04-18 15:04:50,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:04:50,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:04:50,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:04:50,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:04:50,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:04:49" (1/3) ... [2020-04-18 15:04:50,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6eb25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:04:50, skipping insertion in model container [2020-04-18 15:04:50,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:04:50" (2/3) ... [2020-04-18 15:04:50,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6eb25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:04:50, skipping insertion in model container [2020-04-18 15:04:50,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:04:50" (3/3) ... [2020-04-18 15:04:50,920 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-04-18 15:04:50,931 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:04:50,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:04:50,939 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:04:50,940 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:04:50,966 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,967 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,967 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,967 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,968 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,968 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,969 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,969 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,969 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,970 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,970 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,970 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,971 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,971 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,971 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,972 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,972 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,972 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,976 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,977 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,977 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,984 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,984 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,985 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,985 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,988 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,988 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,989 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:50,989 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:04:51,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:04:51,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:04:51,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:04:51,027 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:04:51,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:04:51,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:04:51,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:04:51,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:04:51,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:04:51,044 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 15:04:51,047 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:04:51,092 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:04:51,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:04:51,097 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:04:51,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:04:51,121 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:04:51,121 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:04:51,122 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:04:51,124 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-18 15:04:51,125 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:04:52,624 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 15:04:52,667 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-18 15:04:52,667 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 15:04:52,671 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:04:52,693 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-18 15:04:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:04:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:04:52,703 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:52,704 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:52,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:52,712 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-18 15:04:52,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:52,720 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2045431705] [2020-04-18 15:04:52,737 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:52,748 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:04:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:04:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:04:52,750 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 2 times [2020-04-18 15:04:52,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:52,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165938466] [2020-04-18 15:04:52,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:52,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165938466] [2020-04-18 15:04:52,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:52,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:04:52,953 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:52,954 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:52,957 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:04:52,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:52,965 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:04:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:52,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:52,971 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:04:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:52,976 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:04:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:04:52,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:52,977 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2045431705] [2020-04-18 15:04:52,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:52,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:04:52,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2045431705] [2020-04-18 15:04:52,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:04:52,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:52,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:52,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:52,985 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:04:53,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,017 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-04-18 15:04:53,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:04:53,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:04:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:53,033 INFO L225 Difference]: With dead ends: 222 [2020-04-18 15:04:53,033 INFO L226 Difference]: Without dead ends: 174 [2020-04-18 15:04:53,035 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-04-18 15:04:53,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-04-18 15:04:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-04-18 15:04:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-04-18 15:04:53,096 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-04-18 15:04:53,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:53,097 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-04-18 15:04:53,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:04:53,097 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-04-18 15:04:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:04:53,099 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:53,099 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:53,099 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:53,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119381, now seen corresponding path program 1 times [2020-04-18 15:04:53,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:53,100 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1256927277] [2020-04-18 15:04:53,101 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,101 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 15:04:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:04:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:04:53,102 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1586118481, now seen corresponding path program 2 times [2020-04-18 15:04:53,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102034224] [2020-04-18 15:04:53,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:53,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102034224] [2020-04-18 15:04:53,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:53,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:53,213 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:53,214 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,219 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:04:53,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:53,226 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:04:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:53,226 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 15:04:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,241 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:04:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:04:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:04:53,242 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:04:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119381, now seen corresponding path program 3 times [2020-04-18 15:04:53,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443183813] [2020-04-18 15:04:53,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:53,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443183813] [2020-04-18 15:04:53,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:53,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:53,345 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:53,345 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 15:04:53,347 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:53,426 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:04:53,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:04:53,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:04:53,427 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2020-04-18 15:04:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,445 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:04:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:04:53,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:53,448 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1256927277] [2020-04-18 15:04:53,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:53,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:04:53,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1256927277] [2020-04-18 15:04:53,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:04:53,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:53,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:04:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:04:53,452 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 6 states. [2020-04-18 15:04:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,498 INFO L93 Difference]: Finished difference Result 204 states and 513 transitions. [2020-04-18 15:04:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:04:53,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-04-18 15:04:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:53,503 INFO L225 Difference]: With dead ends: 204 [2020-04-18 15:04:53,503 INFO L226 Difference]: Without dead ends: 108 [2020-04-18 15:04:53,506 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:04:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-18 15:04:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-18 15:04:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-18 15:04:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 253 transitions. [2020-04-18 15:04:53,523 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 253 transitions. Word has length 9 [2020-04-18 15:04:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:53,524 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 253 transitions. [2020-04-18 15:04:53,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:04:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 253 transitions. [2020-04-18 15:04:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:04:53,524 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:53,525 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:53,525 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash 409264718, now seen corresponding path program 1 times [2020-04-18 15:04:53,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:53,526 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [853165946] [2020-04-18 15:04:53,527 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,528 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 71 transitions. [2020-04-18 15:04:53,529 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:04:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:04:53,531 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash 409265618, now seen corresponding path program 2 times [2020-04-18 15:04:53,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524700450] [2020-04-18 15:04:53,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:53,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524700450] [2020-04-18 15:04:53,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:53,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:53,602 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:53,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,605 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-04-18 15:04:53,605 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:53,609 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:04:53,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:53,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:53,610 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-04-18 15:04:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,614 INFO L93 Difference]: Finished difference Result 41 states and 73 transitions. [2020-04-18 15:04:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 73 transitions. [2020-04-18 15:04:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:04:53,615 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:04:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash 409264718, now seen corresponding path program 3 times [2020-04-18 15:04:53,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681068933] [2020-04-18 15:04:53,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:53,660 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 15:04:53,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681068933] [2020-04-18 15:04:53,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:53,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:53,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:53,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,666 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-04-18 15:04:53,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:53,677 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:04:53,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:53,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:04:53,678 INFO L87 Difference]: Start difference. First operand 41 states and 73 transitions. Second operand 4 states. [2020-04-18 15:04:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,692 INFO L93 Difference]: Finished difference Result 41 states and 73 transitions. [2020-04-18 15:04:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 73 transitions. [2020-04-18 15:04:53,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:53,694 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [853165946] [2020-04-18 15:04:53,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:53,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:04:53,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [853165946] [2020-04-18 15:04:53,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:04:53,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:04:53,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:04:53,699 INFO L87 Difference]: Start difference. First operand 108 states and 253 transitions. Second operand 5 states. [2020-04-18 15:04:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,744 INFO L93 Difference]: Finished difference Result 138 states and 314 transitions. [2020-04-18 15:04:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:04:53,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:04:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:53,746 INFO L225 Difference]: With dead ends: 138 [2020-04-18 15:04:53,746 INFO L226 Difference]: Without dead ends: 60 [2020-04-18 15:04:53,746 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:04:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-18 15:04:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-18 15:04:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-18 15:04:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-18 15:04:53,755 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-18 15:04:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:53,755 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-18 15:04:53,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:04:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-18 15:04:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:04:53,756 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:53,756 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:53,756 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-18 15:04:53,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:53,757 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [116940766] [2020-04-18 15:04:53,758 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 122 transitions. [2020-04-18 15:04:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-04-18 15:04:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:04:53,761 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,761 INFO L82 PathProgramCache]: Analyzing trace with hash -197698324, now seen corresponding path program 2 times [2020-04-18 15:04:53,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042744087] [2020-04-18 15:04:53,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:53,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042744087] [2020-04-18 15:04:53,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:53,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:53,805 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:53,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-04-18 15:04:53,810 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:53,821 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:04:53,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:53,822 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-04-18 15:04:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,827 INFO L93 Difference]: Finished difference Result 62 states and 129 transitions. [2020-04-18 15:04:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 129 transitions. [2020-04-18 15:04:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:04:53,828 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:04:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -197699224, now seen corresponding path program 3 times [2020-04-18 15:04:53,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433850969] [2020-04-18 15:04:53,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:53,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433850969] [2020-04-18 15:04:53,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:53,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:53,880 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:53,881 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:53,884 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 15:04:53,885 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:53,896 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:04:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:53,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:04:53,897 INFO L87 Difference]: Start difference. First operand 62 states and 129 transitions. Second operand 4 states. [2020-04-18 15:04:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:53,916 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 15:04:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 15:04:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:04:53,917 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:04:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:53,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 4 times [2020-04-18 15:04:53,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:53,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119614946] [2020-04-18 15:04:53,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119614946] [2020-04-18 15:04:54,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:54,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,037 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,040 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 15:04:54,040 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,060 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:04:54,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:54,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:04:54,061 INFO L87 Difference]: Start difference. First operand 76 states and 150 transitions. Second operand 4 states. [2020-04-18 15:04:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,077 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 15:04:54,078 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 15:04:54,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:54,080 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [116940766] [2020-04-18 15:04:54,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:54,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:04:54,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [116940766] [2020-04-18 15:04:54,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:04:54,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:54,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:04:54,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:04:54,084 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 7 states. [2020-04-18 15:04:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,285 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-18 15:04:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:04:54,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:04:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:54,286 INFO L225 Difference]: With dead ends: 73 [2020-04-18 15:04:54,286 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 15:04:54,287 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:04:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 15:04:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 15:04:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 15:04:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-18 15:04:54,292 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-18 15:04:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:54,292 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-18 15:04:54,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:04:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-18 15:04:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:04:54,293 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:54,293 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:54,293 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-18 15:04:54,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:54,294 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1265351813] [2020-04-18 15:04:54,295 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 173 transitions. [2020-04-18 15:04:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 15:04:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:04:54,298 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1833698849, now seen corresponding path program 2 times [2020-04-18 15:04:54,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054181143] [2020-04-18 15:04:54,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054181143] [2020-04-18 15:04:54,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:54,327 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,328 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,331 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 15:04:54,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:54,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:54,338 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 15:04:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,341 INFO L93 Difference]: Finished difference Result 83 states and 185 transitions. [2020-04-18 15:04:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 185 transitions. [2020-04-18 15:04:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:04:54,342 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:04:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1833699749, now seen corresponding path program 3 times [2020-04-18 15:04:54,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087577098] [2020-04-18 15:04:54,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087577098] [2020-04-18 15:04:54,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:54,374 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,375 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,379 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 57 transitions. [2020-04-18 15:04:54,379 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,389 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:04:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:04:54,390 INFO L87 Difference]: Start difference. First operand 83 states and 185 transitions. Second operand 4 states. [2020-04-18 15:04:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,403 INFO L93 Difference]: Finished difference Result 111 states and 241 transitions. [2020-04-18 15:04:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 241 transitions. [2020-04-18 15:04:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:04:54,404 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:04:54,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1100968411, now seen corresponding path program 4 times [2020-04-18 15:04:54,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707092486] [2020-04-18 15:04:54,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707092486] [2020-04-18 15:04:54,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:54,489 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,490 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 15:04:54,492 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,507 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:04:54,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:54,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:04:54,508 INFO L87 Difference]: Start difference. First operand 111 states and 241 transitions. Second operand 4 states. [2020-04-18 15:04:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,531 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 15:04:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 15:04:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:04:54,532 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:04:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 5 times [2020-04-18 15:04:54,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333000725] [2020-04-18 15:04:54,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333000725] [2020-04-18 15:04:54,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:04:54,639 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:04:54,644 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,670 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:04:54,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:04:54,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:04:54,671 INFO L87 Difference]: Start difference. First operand 136 states and 276 transitions. Second operand 5 states. [2020-04-18 15:04:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,694 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 15:04:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 15:04:54,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:54,695 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1265351813] [2020-04-18 15:04:54,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:54,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:04:54,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1265351813] [2020-04-18 15:04:54,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:04:54,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:04:54,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:04:54,697 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 8 states. [2020-04-18 15:04:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,844 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-18 15:04:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:04:54,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 15:04:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:54,845 INFO L225 Difference]: With dead ends: 53 [2020-04-18 15:04:54,846 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 15:04:54,846 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:04:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 15:04:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 15:04:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 15:04:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-18 15:04:54,850 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-18 15:04:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:54,851 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-18 15:04:54,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:04:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-18 15:04:54,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:04:54,851 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:54,851 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:54,852 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-18 15:04:54,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:54,853 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1937165744] [2020-04-18 15:04:54,853 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,855 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 238 transitions. [2020-04-18 15:04:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 15:04:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:04:54,857 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1010088817, now seen corresponding path program 2 times [2020-04-18 15:04:54,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662205213] [2020-04-18 15:04:54,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662205213] [2020-04-18 15:04:54,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:54,884 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,888 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 15:04:54,889 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,893 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:54,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:54,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:54,894 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-04-18 15:04:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,898 INFO L93 Difference]: Finished difference Result 110 states and 255 transitions. [2020-04-18 15:04:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-18 15:04:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:04:54,899 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:04:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1010103667, now seen corresponding path program 3 times [2020-04-18 15:04:54,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564068208] [2020-04-18 15:04:54,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:54,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564068208] [2020-04-18 15:04:54,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:54,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:54,931 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:54,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:54,936 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 15:04:54,936 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:54,948 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:54,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:04:54,948 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-04-18 15:04:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:54,962 INFO L93 Difference]: Finished difference Result 152 states and 346 transitions. [2020-04-18 15:04:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 346 transitions. [2020-04-18 15:04:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:04:54,963 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:04:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:54,964 INFO L82 PathProgramCache]: Analyzing trace with hash -229703923, now seen corresponding path program 4 times [2020-04-18 15:04:54,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:54,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418321683] [2020-04-18 15:04:54,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418321683] [2020-04-18 15:04:55,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:55,017 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,018 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,020 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:04:55,021 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:04:55,038 INFO L87 Difference]: Start difference. First operand 152 states and 346 transitions. Second operand 4 states. [2020-04-18 15:04:55,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,085 INFO L93 Difference]: Finished difference Result 202 states and 426 transitions. [2020-04-18 15:04:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 426 transitions. [2020-04-18 15:04:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:04:55,086 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:04:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1757560941, now seen corresponding path program 5 times [2020-04-18 15:04:55,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498032288] [2020-04-18 15:04:55,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498032288] [2020-04-18 15:04:55,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:04:55,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:04:55,195 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,235 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:04:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:04:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:04:55,235 INFO L87 Difference]: Start difference. First operand 202 states and 426 transitions. Second operand 5 states. [2020-04-18 15:04:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,276 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 15:04:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 15:04:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:04:55,278 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:04:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 6 times [2020-04-18 15:04:55,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649280261] [2020-04-18 15:04:55,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649280261] [2020-04-18 15:04:55,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:04:55,355 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,356 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,358 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-04-18 15:04:55,359 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,383 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:04:55,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:04:55,384 INFO L87 Difference]: Start difference. First operand 212 states and 434 transitions. Second operand 6 states. [2020-04-18 15:04:55,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,427 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 15:04:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 15:04:55,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:55,429 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1937165744] [2020-04-18 15:04:55,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:55,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:04:55,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1937165744] [2020-04-18 15:04:55,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:04:55,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:55,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:04:55,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:04:55,431 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-04-18 15:04:55,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,569 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 15:04:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 15:04:55,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 15:04:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:55,570 INFO L225 Difference]: With dead ends: 35 [2020-04-18 15:04:55,570 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 15:04:55,571 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:04:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 15:04:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 15:04:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 15:04:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-18 15:04:55,574 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-18 15:04:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:55,574 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-18 15:04:55,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:04:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-18 15:04:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:55,575 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:04:55,575 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:04:55,575 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:04:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-18 15:04:55,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:04:55,576 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [154016345] [2020-04-18 15:04:55,577 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,580 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 504 transitions. [2020-04-18 15:04:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 15:04:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:55,583 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:04:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash -32739391, now seen corresponding path program 2 times [2020-04-18 15:04:55,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053310571] [2020-04-18 15:04:55,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053310571] [2020-04-18 15:04:55,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:55,608 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 62 transitions. [2020-04-18 15:04:55,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,617 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:55,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:04:55,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:04:55,618 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-04-18 15:04:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,630 INFO L93 Difference]: Finished difference Result 222 states and 579 transitions. [2020-04-18 15:04:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 579 transitions. [2020-04-18 15:04:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:55,631 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:04:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash -47074981, now seen corresponding path program 3 times [2020-04-18 15:04:55,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706037793] [2020-04-18 15:04:55,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706037793] [2020-04-18 15:04:55,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:55,664 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,665 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-04-18 15:04:55,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,703 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:04:55,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:55,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:04:55,704 INFO L87 Difference]: Start difference. First operand 222 states and 579 transitions. Second operand 4 states. [2020-04-18 15:04:55,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,726 INFO L93 Difference]: Finished difference Result 310 states and 769 transitions. [2020-04-18 15:04:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 769 transitions. [2020-04-18 15:04:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:55,730 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:04:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,730 INFO L82 PathProgramCache]: Analyzing trace with hash -47010241, now seen corresponding path program 4 times [2020-04-18 15:04:55,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813388759] [2020-04-18 15:04:55,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813388759] [2020-04-18 15:04:55,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:04:55,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,767 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,775 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 85 transitions. [2020-04-18 15:04:55,775 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:55,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:55,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:04:55,795 INFO L87 Difference]: Start difference. First operand 310 states and 769 transitions. Second operand 4 states. [2020-04-18 15:04:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,820 INFO L93 Difference]: Finished difference Result 478 states and 1169 transitions. [2020-04-18 15:04:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1169 transitions. [2020-04-18 15:04:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:55,822 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:04:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1702133057, now seen corresponding path program 5 times [2020-04-18 15:04:55,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774642466] [2020-04-18 15:04:55,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:55,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774642466] [2020-04-18 15:04:55,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:55,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:04:55,901 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:55,902 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:55,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 15:04:55,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:55,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:55,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:04:55,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:04:55,936 INFO L87 Difference]: Start difference. First operand 478 states and 1169 transitions. Second operand 4 states. [2020-04-18 15:04:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:55,985 INFO L93 Difference]: Finished difference Result 682 states and 1554 transitions. [2020-04-18 15:04:55,986 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1554 transitions. [2020-04-18 15:04:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:55,988 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:04:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:55,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1093921823, now seen corresponding path program 6 times [2020-04-18 15:04:55,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:55,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573710546] [2020-04-18 15:04:55,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:56,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573710546] [2020-04-18 15:04:56,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:56,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:04:56,063 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:56,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:56,070 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 15:04:56,070 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:56,120 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:04:56,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:04:56,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:04:56,122 INFO L87 Difference]: Start difference. First operand 682 states and 1554 transitions. Second operand 5 states. [2020-04-18 15:04:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:56,190 INFO L93 Difference]: Finished difference Result 748 states and 1636 transitions. [2020-04-18 15:04:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1636 transitions. [2020-04-18 15:04:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:56,193 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:04:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1260155603, now seen corresponding path program 7 times [2020-04-18 15:04:56,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:56,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108370851] [2020-04-18 15:04:56,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:56,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108370851] [2020-04-18 15:04:56,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:56,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:04:56,293 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:56,300 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:56,305 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 15:04:56,305 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:56,347 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:56,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:04:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:04:56,349 INFO L87 Difference]: Start difference. First operand 748 states and 1636 transitions. Second operand 6 states. [2020-04-18 15:04:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:56,462 INFO L93 Difference]: Finished difference Result 756 states and 1640 transitions. [2020-04-18 15:04:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1640 transitions. [2020-04-18 15:04:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:04:56,465 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:04:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:04:56,465 INFO L82 PathProgramCache]: Analyzing trace with hash 722630491, now seen corresponding path program 8 times [2020-04-18 15:04:56,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:04:56,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398264228] [2020-04-18 15:04:56,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:04:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:04:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:04:56,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398264228] [2020-04-18 15:04:56,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:04:56,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:04:56,500 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:04:56,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:04:56,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 64 transitions. [2020-04-18 15:04:56,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:04:56,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:04:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:04:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:04:56,563 INFO L87 Difference]: Start difference. First operand 756 states and 1640 transitions. Second operand 5 states. [2020-04-18 15:04:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:56,593 INFO L93 Difference]: Finished difference Result 1018 states and 2149 transitions. [2020-04-18 15:04:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 2149 transitions. [2020-04-18 15:04:56,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:56,596 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [154016345] [2020-04-18 15:04:56,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:04:56,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:04:56,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [154016345] [2020-04-18 15:04:56,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:04:56,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:04:56,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:04:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:04:56,599 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 14 states. [2020-04-18 15:04:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:04:56,876 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 15:04:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:04:56,876 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-04-18 15:04:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:04:56,877 INFO L225 Difference]: With dead ends: 28 [2020-04-18 15:04:56,877 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:04:56,877 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:04:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:04:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:04:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:04:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:04:56,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 15:04:56,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:04:56,879 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:04:56,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:04:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:04:56,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:04:56,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:04:56 BasicIcfg [2020-04-18 15:04:56,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:04:56,885 INFO L168 Benchmark]: Toolchain (without parser) took 7379.58 ms. Allocated memory was 141.0 MB in the beginning and 299.9 MB in the end (delta: 158.9 MB). Free memory was 99.0 MB in the beginning and 199.3 MB in the end (delta: -100.2 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,886 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.97 ms. Allocated memory was 141.0 MB in the beginning and 199.2 MB in the end (delta: 58.2 MB). Free memory was 97.2 MB in the beginning and 155.6 MB in the end (delta: -58.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.54 ms. Allocated memory is still 199.2 MB. Free memory was 155.6 MB in the beginning and 153.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,888 INFO L168 Benchmark]: Boogie Preprocessor took 30.49 ms. Allocated memory is still 199.2 MB. Free memory was 153.5 MB in the beginning and 152.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,895 INFO L168 Benchmark]: RCFGBuilder took 497.55 ms. Allocated memory is still 199.2 MB. Free memory was 152.1 MB in the beginning and 129.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,898 INFO L168 Benchmark]: TraceAbstraction took 5970.95 ms. Allocated memory was 199.2 MB in the beginning and 299.9 MB in the end (delta: 100.7 MB). Free memory was 129.7 MB in the beginning and 199.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:04:56,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 777.97 ms. Allocated memory was 141.0 MB in the beginning and 199.2 MB in the end (delta: 58.2 MB). Free memory was 97.2 MB in the beginning and 155.6 MB in the end (delta: -58.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.54 ms. Allocated memory is still 199.2 MB. Free memory was 155.6 MB in the beginning and 153.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.49 ms. Allocated memory is still 199.2 MB. Free memory was 153.5 MB in the beginning and 152.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.55 ms. Allocated memory is still 199.2 MB. Free memory was 152.1 MB in the beginning and 129.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5970.95 ms. Allocated memory was 199.2 MB in the beginning and 299.9 MB in the end (delta: 100.7 MB). Free memory was 129.7 MB in the beginning and 199.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 105 SDtfs, 152 SDslu, 214 SDs, 0 SdLazy, 263 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 308 SyntacticMatches, 12 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...