/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:04:16,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:04:16,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:04:16,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:04:16,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:04:16,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:04:16,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:04:16,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:04:16,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:04:16,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:04:16,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:04:16,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:04:16,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:04:16,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:04:16,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:04:16,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:04:16,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:04:16,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:04:16,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:04:16,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:04:16,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:04:16,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:04:16,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:04:16,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:04:16,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:04:16,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:04:16,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:04:16,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:04:16,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:04:16,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:04:16,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:04:16,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:04:16,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:04:16,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:04:16,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:04:16,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:04:16,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:04:16,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:04:16,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:04:16,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:04:16,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:04:16,294 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:04:16,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:04:16,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:04:16,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:04:16,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:04:16,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:04:16,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:04:16,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:04:16,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:04:16,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:04:16,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:04:16,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:04:16,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:04:16,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:04:16,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:04:16,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:04:16,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:04:16,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:04:16,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:04:16,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:04:16,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:04:16,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:04:16,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:04:16,300 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:04:16,301 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:04:16,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:04:16,301 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:04:16,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:04:16,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:04:16,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:04:16,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:04:16,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:04:16,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-06 01:04:16,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c33b846/1e4ca974e8564a6bac7fdc30aabd5613/FLAG3b40537d2 [2020-10-06 01:04:17,151 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:04:17,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-06 01:04:17,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c33b846/1e4ca974e8564a6bac7fdc30aabd5613/FLAG3b40537d2 [2020-10-06 01:04:17,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c33b846/1e4ca974e8564a6bac7fdc30aabd5613 [2020-10-06 01:04:17,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:04:17,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:04:17,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:04:17,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:04:17,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:04:17,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:04:17" (1/1) ... [2020-10-06 01:04:17,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b6f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:17, skipping insertion in model container [2020-10-06 01:04:17,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:04:17" (1/1) ... [2020-10-06 01:04:17,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:04:17,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:04:18,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:04:18,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:04:18,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:04:18,180 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:04:18,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18 WrapperNode [2020-10-06 01:04:18,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:04:18,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:04:18,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:04:18,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:04:18,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:04:18,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:04:18,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:04:18,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:04:18,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (1/1) ... [2020-10-06 01:04:18,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:04:18,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:04:18,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:04:18,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:04:18,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (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 [2020-10-06 01:04:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:04:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:04:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:04:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:04:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:04:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:04:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:04:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:04:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:04:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:04:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-06 01:04:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-06 01:04:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:04:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:04:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:04:18,331 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:04:18,680 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:04:18,680 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:04:18,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:04:18 BoogieIcfgContainer [2020-10-06 01:04:18,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:04:18,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:04:18,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:04:18,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:04:18,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:04:17" (1/3) ... [2020-10-06 01:04:18,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0540fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:04:18, skipping insertion in model container [2020-10-06 01:04:18,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:04:18" (2/3) ... [2020-10-06 01:04:18,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0540fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:04:18, skipping insertion in model container [2020-10-06 01:04:18,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:04:18" (3/3) ... [2020-10-06 01:04:18,691 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-06 01:04:18,702 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:04:18,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:04:18,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:04:18,710 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:04:18,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,762 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,762 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,766 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,766 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,769 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,769 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,769 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,769 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,770 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,772 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,776 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,776 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,776 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,777 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,789 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,789 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:04:18,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-06 01:04:18,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:04:18,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:04:18,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:04:18,836 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:04:18,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:04:18,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:04:18,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:04:18,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:04:18,852 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-06 01:04:18,854 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-06 01:04:18,904 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-06 01:04:18,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:04:18,910 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-06 01:04:18,913 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-06 01:04:18,955 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-06 01:04:18,955 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:04:18,956 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-06 01:04:18,961 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-10-06 01:04:18,963 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:04:20,229 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-10-06 01:04:20,230 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-10-06 01:04:20,234 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-06 01:04:20,318 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-06 01:04:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-06 01:04:20,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:04:20,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:20,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:20,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:20,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:20,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-06 01:04:20,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:20,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699306555] [2020-10-06 01:04:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:20,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699306555] [2020-10-06 01:04:20,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:20,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:20,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [542433332] [2020-10-06 01:04:20,593 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:20,596 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:20,611 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-06 01:04:20,611 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:20,616 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:20,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 01:04:20,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 01:04:20,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:04:20,634 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-06 01:04:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:20,676 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-06 01:04:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 01:04:20,678 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-06 01:04:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:20,703 INFO L225 Difference]: With dead ends: 850 [2020-10-06 01:04:20,703 INFO L226 Difference]: Without dead ends: 706 [2020-10-06 01:04:20,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:04:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-06 01:04:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-06 01:04:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-06 01:04:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-06 01:04:20,818 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-06 01:04:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:20,819 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-06 01:04:20,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 01:04:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-06 01:04:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:04:20,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:20,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:20,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:04:20,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-06 01:04:20,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:20,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692324632] [2020-10-06 01:04:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:20,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692324632] [2020-10-06 01:04:20,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:20,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:20,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1698688048] [2020-10-06 01:04:20,996 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:20,997 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:20,998 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 01:04:20,998 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:20,999 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:21,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:21,001 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-06 01:04:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:21,047 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-06 01:04:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:21,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 01:04:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:21,054 INFO L225 Difference]: With dead ends: 802 [2020-10-06 01:04:21,054 INFO L226 Difference]: Without dead ends: 658 [2020-10-06 01:04:21,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-06 01:04:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-06 01:04:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-06 01:04:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-06 01:04:21,083 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-06 01:04:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:21,084 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-06 01:04:21,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-06 01:04:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:04:21,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:21,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:21,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:04:21,087 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:21,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-10-06 01:04:21,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:21,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672803621] [2020-10-06 01:04:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:21,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672803621] [2020-10-06 01:04:21,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:21,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:21,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1819390408] [2020-10-06 01:04:21,153 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:21,155 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:21,156 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-10-06 01:04:21,156 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:21,163 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:21,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:21,164 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-06 01:04:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:21,200 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-10-06 01:04:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:21,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:04:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:21,206 INFO L225 Difference]: With dead ends: 738 [2020-10-06 01:04:21,206 INFO L226 Difference]: Without dead ends: 618 [2020-10-06 01:04:21,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-06 01:04:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-06 01:04:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-06 01:04:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-10-06 01:04:21,248 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-10-06 01:04:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:21,249 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-10-06 01:04:21,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-10-06 01:04:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:04:21,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:21,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:21,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:04:21,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:21,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:21,251 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-10-06 01:04:21,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:21,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245788491] [2020-10-06 01:04:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:21,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245788491] [2020-10-06 01:04:21,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:21,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:21,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1644159471] [2020-10-06 01:04:21,307 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:21,309 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:21,311 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-06 01:04:21,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:21,359 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:21,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:21,360 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-10-06 01:04:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:21,384 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-10-06 01:04:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:21,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-06 01:04:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:21,390 INFO L225 Difference]: With dead ends: 658 [2020-10-06 01:04:21,390 INFO L226 Difference]: Without dead ends: 578 [2020-10-06 01:04:21,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-06 01:04:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-06 01:04:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-06 01:04:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-06 01:04:21,409 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-06 01:04:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:21,410 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-06 01:04:21,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-06 01:04:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:04:21,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:21,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:21,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:04:21,412 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-06 01:04:21,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:21,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638450203] [2020-10-06 01:04:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:21,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638450203] [2020-10-06 01:04:21,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:21,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:04:21,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [507166267] [2020-10-06 01:04:21,457 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:21,459 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:21,462 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 43 transitions. [2020-10-06 01:04:21,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:21,485 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:21,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:21,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:21,486 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-06 01:04:21,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:21,521 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-06 01:04:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:21,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-06 01:04:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:21,527 INFO L225 Difference]: With dead ends: 814 [2020-10-06 01:04:21,527 INFO L226 Difference]: Without dead ends: 618 [2020-10-06 01:04:21,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-06 01:04:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-06 01:04:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-06 01:04:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-06 01:04:21,545 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-06 01:04:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:21,545 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-06 01:04:21,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-06 01:04:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:04:21,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:21,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:21,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:04:21,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:21,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-06 01:04:21,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:21,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997410126] [2020-10-06 01:04:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:21,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997410126] [2020-10-06 01:04:21,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:21,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:04:21,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1435245547] [2020-10-06 01:04:21,596 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:21,597 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:21,601 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-10-06 01:04:21,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:21,651 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:04:21,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:04:21,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:21,652 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-10-06 01:04:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:21,694 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-10-06 01:04:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:21,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-06 01:04:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:21,699 INFO L225 Difference]: With dead ends: 838 [2020-10-06 01:04:21,699 INFO L226 Difference]: Without dead ends: 490 [2020-10-06 01:04:21,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:04:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-06 01:04:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-10-06 01:04:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-06 01:04:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-10-06 01:04:21,715 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-10-06 01:04:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:21,716 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-10-06 01:04:21,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:04:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-10-06 01:04:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:04:21,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:21,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:21,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:04:21,718 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-10-06 01:04:21,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:21,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140533797] [2020-10-06 01:04:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:21,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140533797] [2020-10-06 01:04:21,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:21,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:04:21,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1228535094] [2020-10-06 01:04:21,759 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:21,760 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:21,763 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-06 01:04:21,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:21,810 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:21,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:21,830 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-10-06 01:04:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:21,851 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-10-06 01:04:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:21,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-06 01:04:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:21,856 INFO L225 Difference]: With dead ends: 514 [2020-10-06 01:04:21,856 INFO L226 Difference]: Without dead ends: 466 [2020-10-06 01:04:21,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:21,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-06 01:04:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-10-06 01:04:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-06 01:04:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-10-06 01:04:21,871 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-10-06 01:04:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:21,871 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-10-06 01:04:21,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-10-06 01:04:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:04:21,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:21,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:21,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:04:21,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:21,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-06 01:04:21,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:21,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673250645] [2020-10-06 01:04:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:21,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673250645] [2020-10-06 01:04:21,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:21,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:04:21,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1976598308] [2020-10-06 01:04:21,919 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:21,921 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:21,926 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-10-06 01:04:21,927 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:21,970 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:21,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:04:21,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:21,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:04:21,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:04:21,971 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 4 states. [2020-10-06 01:04:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:22,011 INFO L93 Difference]: Finished difference Result 686 states and 2008 transitions. [2020-10-06 01:04:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:22,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-06 01:04:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:22,015 INFO L225 Difference]: With dead ends: 686 [2020-10-06 01:04:22,016 INFO L226 Difference]: Without dead ends: 490 [2020-10-06 01:04:22,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-06 01:04:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 442. [2020-10-06 01:04:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-06 01:04:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1272 transitions. [2020-10-06 01:04:22,032 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1272 transitions. Word has length 15 [2020-10-06 01:04:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:22,033 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 1272 transitions. [2020-10-06 01:04:22,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:04:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1272 transitions. [2020-10-06 01:04:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:04:22,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:22,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:22,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:04:22,035 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-10-06 01:04:22,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:22,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999905567] [2020-10-06 01:04:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:22,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999905567] [2020-10-06 01:04:22,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:22,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:04:22,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318428891] [2020-10-06 01:04:22,080 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:22,081 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:22,087 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 85 transitions. [2020-10-06 01:04:22,087 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:22,200 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:22,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:04:22,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:22,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:04:22,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:22,201 INFO L87 Difference]: Start difference. First operand 442 states and 1272 transitions. Second operand 5 states. [2020-10-06 01:04:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:22,233 INFO L93 Difference]: Finished difference Result 578 states and 1616 transitions. [2020-10-06 01:04:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:04:22,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-06 01:04:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:22,236 INFO L225 Difference]: With dead ends: 578 [2020-10-06 01:04:22,236 INFO L226 Difference]: Without dead ends: 254 [2020-10-06 01:04:22,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:04:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-06 01:04:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-06 01:04:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-06 01:04:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-06 01:04:22,244 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-06 01:04:22,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:22,244 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-06 01:04:22,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:04:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-06 01:04:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:04:22,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:22,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:22,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 01:04:22,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:22,246 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-06 01:04:22,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:22,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464036481] [2020-10-06 01:04:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:22,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464036481] [2020-10-06 01:04:22,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:22,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:04:22,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [103947624] [2020-10-06 01:04:22,280 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:22,282 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:22,286 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-10-06 01:04:22,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:22,304 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,335 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,346 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,360 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,374 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,396 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17833#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-06 01:04:22,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:04:22,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:04:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:22,398 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 5 states. [2020-10-06 01:04:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:22,450 INFO L93 Difference]: Finished difference Result 244 states and 585 transitions. [2020-10-06 01:04:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:04:22,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-06 01:04:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:22,452 INFO L225 Difference]: With dead ends: 244 [2020-10-06 01:04:22,453 INFO L226 Difference]: Without dead ends: 171 [2020-10-06 01:04:22,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:04:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-06 01:04:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-06 01:04:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-06 01:04:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-06 01:04:22,458 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 15 [2020-10-06 01:04:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:22,458 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-06 01:04:22,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:04:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-06 01:04:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:04:22,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:22,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:22,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-06 01:04:22,459 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:22,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-06 01:04:22,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:22,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490034911] [2020-10-06 01:04:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:22,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490034911] [2020-10-06 01:04:22,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:22,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:04:22,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [134564624] [2020-10-06 01:04:22,503 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:22,505 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:22,513 INFO L258 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-10-06 01:04:22,514 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:22,523 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,552 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,587 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,700 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:22,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:04:22,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:22,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:04:22,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:04:22,702 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-06 01:04:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:22,751 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-06 01:04:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:04:22,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-06 01:04:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:22,753 INFO L225 Difference]: With dead ends: 147 [2020-10-06 01:04:22,753 INFO L226 Difference]: Without dead ends: 107 [2020-10-06 01:04:22,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:04:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-06 01:04:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-06 01:04:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-06 01:04:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-06 01:04:22,757 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-06 01:04:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:22,758 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-06 01:04:22,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:04:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-06 01:04:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:04:22,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:22,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:22,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-06 01:04:22,759 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:22,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:22,760 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-06 01:04:22,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:22,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286247487] [2020-10-06 01:04:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:22,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286247487] [2020-10-06 01:04:22,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:22,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:04:22,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [699953211] [2020-10-06 01:04:22,827 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:22,829 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:22,834 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-10-06 01:04:22,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:22,840 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:04:22,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:04:22,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:04:22,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:04:22,841 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-06 01:04:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:22,869 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-06 01:04:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:04:22,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-06 01:04:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:22,871 INFO L225 Difference]: With dead ends: 121 [2020-10-06 01:04:22,871 INFO L226 Difference]: Without dead ends: 105 [2020-10-06 01:04:22,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:04:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-06 01:04:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-06 01:04:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-06 01:04:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-06 01:04:22,874 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-06 01:04:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:22,875 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-06 01:04:22,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:04:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-06 01:04:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:04:22,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:04:22,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:04:22,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-06 01:04:22,876 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:04:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:04:22,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-06 01:04:22,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:04:22,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92719725] [2020-10-06 01:04:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:04:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:04:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:04:22,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92719725] [2020-10-06 01:04:22,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:04:22,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-06 01:04:22,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1436865059] [2020-10-06 01:04:22,932 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:04:22,934 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:04:22,940 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-10-06 01:04:22,941 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:04:22,954 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:04:22,962 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19136#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:04:22,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-06 01:04:22,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:04:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-06 01:04:22,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:04:22,963 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-10-06 01:04:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:04:23,006 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-06 01:04:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:04:23,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-06 01:04:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:04:23,007 INFO L225 Difference]: With dead ends: 93 [2020-10-06 01:04:23,007 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:04:23,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:04:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:04:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:04:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:04:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:04:23,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-06 01:04:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:04:23,009 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:04:23,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-06 01:04:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:04:23,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:04:23,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-06 01:04:23,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:04:23 BasicIcfg [2020-10-06 01:04:23,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:04:23,018 INFO L168 Benchmark]: Toolchain (without parser) took 5547.72 ms. Allocated memory was 148.4 MB in the beginning and 281.5 MB in the end (delta: 133.2 MB). Free memory was 103.3 MB in the beginning and 166.6 MB in the end (delta: -63.2 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,018 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.15 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 161.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.34 ms. Allocated memory is still 205.0 MB. Free memory was 161.7 MB in the beginning and 159.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,021 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 157.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,022 INFO L168 Benchmark]: RCFGBuilder took 425.34 ms. Allocated memory is still 205.0 MB. Free memory was 157.1 MB in the beginning and 133.8 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,022 INFO L168 Benchmark]: TraceAbstraction took 4330.38 ms. Allocated memory was 205.0 MB in the beginning and 281.5 MB in the end (delta: 76.5 MB). Free memory was 132.9 MB in the beginning and 166.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:04:23,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.15 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 161.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.34 ms. Allocated memory is still 205.0 MB. Free memory was 161.7 MB in the beginning and 159.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 157.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.34 ms. Allocated memory is still 205.0 MB. Free memory was 157.1 MB in the beginning and 133.8 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4330.38 ms. Allocated memory was 205.0 MB in the beginning and 281.5 MB in the end (delta: 76.5 MB). Free memory was 132.9 MB in the beginning and 166.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 353 SDtfs, 265 SDslu, 567 SDs, 0 SdLazy, 203 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 147 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 7133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...