/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/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:13:23,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:13:23,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:13:23,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:13:23,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:13:23,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:13:23,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:13:23,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:13:23,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:13:23,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:13:23,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:13:23,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:13:23,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:13:23,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:13:23,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:13:23,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:13:23,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:13:23,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:13:23,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:13:23,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:13:23,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:13:23,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:13:23,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:13:23,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:13:23,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:13:23,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:13:23,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:13:23,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:13:23,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:13:23,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:13:23,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:13:23,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:13:23,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:13:23,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:13:23,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:13:23,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:13:23,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:13:23,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:13:23,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:13:23,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:13:23,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:13:23,399 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:13:23,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:13:23,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:13:23,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:13:23,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:13:23,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:13:23,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:13:23,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:13:23,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:13:23,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:13:23,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:13:23,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:13:23,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:13:23,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:13:23,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:13:23,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:13:23,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:13:23,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:13:23,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:13:23,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:13:23,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:13:23,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:13:23,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:13:23,404 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:13:23,404 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:13:23,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:13:23,404 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:13:23,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:13:23,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:13:23,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:13:23,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:13:23,875 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:13:23,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-09-12 00:13:23,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1200bcc7/baf6ec0a0cdf488796f677cfe503fbdf/FLAG58a940cac [2020-09-12 00:13:24,584 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:13:24,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-09-12 00:13:24,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1200bcc7/baf6ec0a0cdf488796f677cfe503fbdf/FLAG58a940cac [2020-09-12 00:13:24,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1200bcc7/baf6ec0a0cdf488796f677cfe503fbdf [2020-09-12 00:13:24,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:13:24,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:13:24,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:24,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:13:24,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:13:24,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:24" (1/1) ... [2020-09-12 00:13:24,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52250798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:24, skipping insertion in model container [2020-09-12 00:13:24,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:13:24" (1/1) ... [2020-09-12 00:13:24,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:13:24,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:13:25,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:25,549 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:13:25,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:13:25,675 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:13:25,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25 WrapperNode [2020-09-12 00:13:25,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:13:25,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:25,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:13:25,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:13:25,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:13:25,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:13:25,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:13:25,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:13:25,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... [2020-09-12 00:13:25,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:13:25,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:13:25,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:13:25,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:13:25,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:13:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:13:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:13:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:13:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:13:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:13:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:13:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:13:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:13:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:13:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:13:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:13:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:13:25,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:13:25,882 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:13:26,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:13:26,238 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:13:26,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:13:26 BoogieIcfgContainer [2020-09-12 00:13:26,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:13:26,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:13:26,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:13:26,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:13:26,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:13:24" (1/3) ... [2020-09-12 00:13:26,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee674d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:13:26, skipping insertion in model container [2020-09-12 00:13:26,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:13:25" (2/3) ... [2020-09-12 00:13:26,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee674d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:13:26, skipping insertion in model container [2020-09-12 00:13:26,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:13:26" (3/3) ... [2020-09-12 00:13:26,255 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2020-09-12 00:13:26,267 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:13:26,267 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:13:26,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:13:26,279 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:13:26,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,324 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,335 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:13:26,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:13:26,391 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:13:26,391 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:13:26,391 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:13:26,391 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:13:26,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:13:26,392 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:13:26,392 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:13:26,392 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:13:26,410 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:26,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:26,464 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-12 00:13:26,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:13:26,470 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:13:26,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-12 00:13:26,497 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-12 00:13:26,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:13:26,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:13:26,500 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:13:26,502 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:13:27,897 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-12 00:13:28,123 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-12 00:13:28,123 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-12 00:13:28,128 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-12 00:13:28,158 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-12 00:13:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-12 00:13:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:13:28,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:28,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:28,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:28,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-12 00:13:28,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:28,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331816412] [2020-09-12 00:13:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:28,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331816412] [2020-09-12 00:13:28,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:28,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:13:28,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2128821878] [2020-09-12 00:13:28,484 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:28,488 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:28,508 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:13:28,508 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:28,511 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:28,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:28,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:28,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:28,536 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-12 00:13:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:28,580 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-12 00:13:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:28,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:13:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:28,603 INFO L225 Difference]: With dead ends: 294 [2020-09-12 00:13:28,603 INFO L226 Difference]: Without dead ends: 230 [2020-09-12 00:13:28,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-12 00:13:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-12 00:13:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-12 00:13:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-12 00:13:28,688 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-12 00:13:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:28,690 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-12 00:13:28,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-12 00:13:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:13:28,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:28,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:28,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:13:28,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:28,693 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-12 00:13:28,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:28,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102650521] [2020-09-12 00:13:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:28,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102650521] [2020-09-12 00:13:28,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:28,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:13:28,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1145962400] [2020-09-12 00:13:28,781 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:28,783 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:28,786 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-12 00:13:28,787 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:28,847 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:28,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:28,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:28,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:28,850 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-12 00:13:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:28,858 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-12 00:13:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:28,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:13:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:28,862 INFO L225 Difference]: With dead ends: 202 [2020-09-12 00:13:28,862 INFO L226 Difference]: Without dead ends: 202 [2020-09-12 00:13:28,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-12 00:13:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-12 00:13:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-12 00:13:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-12 00:13:28,881 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-12 00:13:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:28,882 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-12 00:13:28,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-12 00:13:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:13:28,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:28,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:28,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:13:28,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:28,885 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-12 00:13:28,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:28,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794278743] [2020-09-12 00:13:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:28,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794278743] [2020-09-12 00:13:28,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:28,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:13:28,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [491113223] [2020-09-12 00:13:28,958 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:28,959 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:28,960 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-12 00:13:28,960 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:28,964 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:28,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:13:28,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:28,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:13:28,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:28,965 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-12 00:13:28,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:28,984 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-12 00:13:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:13:28,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-12 00:13:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:28,986 INFO L225 Difference]: With dead ends: 266 [2020-09-12 00:13:28,986 INFO L226 Difference]: Without dead ends: 140 [2020-09-12 00:13:28,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:13:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-12 00:13:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-12 00:13:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-12 00:13:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-12 00:13:28,999 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-12 00:13:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:28,999 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-12 00:13:28,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:13:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-12 00:13:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:13:29,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:29,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:29,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:13:29,001 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:29,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-12 00:13:29,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:29,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235975627] [2020-09-12 00:13:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:29,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235975627] [2020-09-12 00:13:29,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:29,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:13:29,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [413094770] [2020-09-12 00:13:29,104 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:29,105 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:29,107 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-12 00:13:29,107 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:29,121 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:29,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:29,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:29,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:29,123 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-12 00:13:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:29,164 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-12 00:13:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:13:29,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-12 00:13:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:29,166 INFO L225 Difference]: With dead ends: 165 [2020-09-12 00:13:29,166 INFO L226 Difference]: Without dead ends: 113 [2020-09-12 00:13:29,166 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 [2020-09-12 00:13:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-12 00:13:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-12 00:13:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-12 00:13:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-12 00:13:29,174 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-12 00:13:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:29,174 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-12 00:13:29,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-12 00:13:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:13:29,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:29,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:29,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:13:29,176 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:29,177 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-12 00:13:29,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:29,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035909575] [2020-09-12 00:13:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:29,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035909575] [2020-09-12 00:13:29,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:29,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:29,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [801381062] [2020-09-12 00:13:29,261 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:29,263 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:29,265 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-12 00:13:29,265 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:29,283 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2995#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:13:29,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:13:29,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:13:29,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:13:29,284 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-12 00:13:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:29,351 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-12 00:13:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:13:29,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-12 00:13:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:29,352 INFO L225 Difference]: With dead ends: 111 [2020-09-12 00:13:29,352 INFO L226 Difference]: Without dead ends: 80 [2020-09-12 00:13:29,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:13:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-12 00:13:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-12 00:13:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-12 00:13:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-12 00:13:29,357 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-12 00:13:29,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:29,357 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-12 00:13:29,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:13:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-12 00:13:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:13:29,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:29,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:29,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:13:29,359 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:29,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-12 00:13:29,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:29,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776226727] [2020-09-12 00:13:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:29,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776226727] [2020-09-12 00:13:29,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:29,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:13:29,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1487858429] [2020-09-12 00:13:29,438 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:29,439 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:29,442 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-12 00:13:29,442 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:29,458 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3275#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:13:29,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:13:29,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:29,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:13:29,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:13:29,459 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-12 00:13:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:29,518 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-12 00:13:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:13:29,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-12 00:13:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:29,520 INFO L225 Difference]: With dead ends: 75 [2020-09-12 00:13:29,520 INFO L226 Difference]: Without dead ends: 66 [2020-09-12 00:13:29,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:13:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-12 00:13:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-12 00:13:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-12 00:13:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-12 00:13:29,524 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-12 00:13:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:29,525 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-12 00:13:29,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:13:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-12 00:13:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:29,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:29,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:29,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:13:29,527 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:29,527 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-12 00:13:29,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:29,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108737432] [2020-09-12 00:13:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:29,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108737432] [2020-09-12 00:13:29,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:29,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:29,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [890489680] [2020-09-12 00:13:29,601 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:29,604 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:29,612 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-12 00:13:29,612 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:29,649 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:29,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:29,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:29,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:29,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:29,650 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-12 00:13:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:29,670 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-12 00:13:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:13:29,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:29,672 INFO L225 Difference]: With dead ends: 85 [2020-09-12 00:13:29,672 INFO L226 Difference]: Without dead ends: 48 [2020-09-12 00:13:29,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-12 00:13:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-12 00:13:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-12 00:13:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-12 00:13:29,675 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-12 00:13:29,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:29,675 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-12 00:13:29,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-12 00:13:29,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:29,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:29,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:29,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:13:29,677 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:29,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:29,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-12 00:13:29,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:29,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729253852] [2020-09-12 00:13:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:29,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729253852] [2020-09-12 00:13:29,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:29,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:29,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [145807174] [2020-09-12 00:13:29,731 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:29,733 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:29,738 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-12 00:13:29,738 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:29,754 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:29,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:29,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:29,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:29,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:29,755 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-12 00:13:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:29,775 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-12 00:13:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:13:29,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:29,777 INFO L225 Difference]: With dead ends: 73 [2020-09-12 00:13:29,777 INFO L226 Difference]: Without dead ends: 42 [2020-09-12 00:13:29,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-12 00:13:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-12 00:13:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-12 00:13:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-12 00:13:29,780 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-12 00:13:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:29,780 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-12 00:13:29,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-12 00:13:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:13:29,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:13:29,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:13:29,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:13:29,782 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:13:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:13:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-12 00:13:29,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:13:29,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515154401] [2020-09-12 00:13:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:13:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:13:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:13:29,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515154401] [2020-09-12 00:13:29,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:13:29,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:13:29,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [745654502] [2020-09-12 00:13:29,836 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:13:29,838 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:13:29,842 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-12 00:13:29,842 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:13:29,864 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:13:29,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:13:29,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:13:29,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:13:29,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:13:29,865 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-12 00:13:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:13:29,876 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-12 00:13:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:13:29,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:13:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:13:29,877 INFO L225 Difference]: With dead ends: 41 [2020-09-12 00:13:29,877 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:13:29,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:13:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:13:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:13:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:13:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:13:29,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-12 00:13:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:13:29,879 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:13:29,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:13:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:13:29,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:13:29,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-12 00:13:29,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:13:29 BasicIcfg [2020-09-12 00:13:29,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:13:29,887 INFO L168 Benchmark]: Toolchain (without parser) took 5032.03 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 101.8 MB in the beginning and 132.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,888 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.25 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 161.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.65 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,890 INFO L168 Benchmark]: Boogie Preprocessor took 51.94 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 157.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,891 INFO L168 Benchmark]: RCFGBuilder took 454.23 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 135.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,892 INFO L168 Benchmark]: TraceAbstraction took 3638.20 ms. Allocated memory was 203.9 MB in the beginning and 249.0 MB in the end (delta: 45.1 MB). Free memory was 135.0 MB in the beginning and 132.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:13:29,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.25 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 161.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.65 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.94 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 157.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.23 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 135.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3638.20 ms. Allocated memory was 203.9 MB in the beginning and 249.0 MB in the end (delta: 45.1 MB). Free memory was 135.0 MB in the beginning and 132.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 121 SDslu, 225 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...