/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:29:21,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:29:21,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:29:21,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:29:21,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:29:21,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:29:21,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:29:21,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:29:21,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:29:21,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:29:21,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:29:21,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:29:21,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:29:21,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:29:21,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:29:21,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:29:21,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:29:21,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:29:21,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:29:21,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:29:21,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:29:21,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:29:21,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:29:21,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:29:21,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:29:21,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:29:21,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:29:21,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:29:21,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:29:21,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:29:21,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:29:21,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:29:21,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:29:21,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:29:21,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:29:21,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:29:21,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:29:21,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:29:21,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:29:21,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:29:21,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:29:21,495 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 [2020-09-11 23:29:21,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:29:21,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:29:21,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:29:21,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:29:21,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:29:21,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:29:21,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:29:21,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:29:21,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:29:21,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:29:21,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:29:21,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:29:21,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:29:21,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:29:21,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:29:21,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:29:21,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:29:21,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:29:21,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:29:21,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:29:21,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:29:21,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:29:21,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:29:21,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:29:21,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:29:21,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:29:21,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:29:21,526 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:29:21,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:29:21,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:29:21,527 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:29:22,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:29:22,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:29:22,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:29:22,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:29:22,036 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:29:22,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-11 23:29:22,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b517b7506/25c2a17769784484bf51fb07eeb41a4e/FLAGcad2e038c [2020-09-11 23:29:22,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:29:22,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-11 23:29:22,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b517b7506/25c2a17769784484bf51fb07eeb41a4e/FLAGcad2e038c [2020-09-11 23:29:22,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b517b7506/25c2a17769784484bf51fb07eeb41a4e [2020-09-11 23:29:22,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:29:23,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:29:23,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:29:23,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:29:23,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:29:23,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:29:22" (1/1) ... [2020-09-11 23:29:23,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42178c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23, skipping insertion in model container [2020-09-11 23:29:23,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:29:22" (1/1) ... [2020-09-11 23:29:23,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:29:23,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:29:23,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:29:23,647 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:29:23,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:29:23,812 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:29:23,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23 WrapperNode [2020-09-11 23:29:23,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:29:23,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:29:23,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:29:23,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:29:23,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:29:23,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:29:23,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:29:23,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:29:23,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (1/1) ... [2020-09-11 23:29:23,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:29:23,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:29:23,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:29:23,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:29:23,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (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 [2020-09-11 23:29:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:29:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:29:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:29:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:29:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:29:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:29:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:29:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:29:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:29:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:29:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:29:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:29:24,024 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:29:24,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:29:24,435 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:29:24,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:29:24 BoogieIcfgContainer [2020-09-11 23:29:24,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:29:24,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:29:24,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:29:24,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:29:24,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:29:22" (1/3) ... [2020-09-11 23:29:24,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eb51c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:29:24, skipping insertion in model container [2020-09-11 23:29:24,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:29:23" (2/3) ... [2020-09-11 23:29:24,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34eb51c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:29:24, skipping insertion in model container [2020-09-11 23:29:24,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:29:24" (3/3) ... [2020-09-11 23:29:24,451 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-09-11 23:29:24,463 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:29:24,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:29:24,474 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:29:24,475 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:29:24,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,506 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,508 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,509 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,510 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,510 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,511 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,516 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,516 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,516 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,517 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,531 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:29:24,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:29:24,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:29:24,581 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:29:24,581 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:29:24,581 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:29:24,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:29:24,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:29:24,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:29:24,582 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:29:24,600 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:29:24,603 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:29:24,652 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:29:24,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:29:24,658 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 51 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. [2020-09-11 23:29:24,662 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:29:24,684 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:29:24,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:29:24,685 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 51 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. [2020-09-11 23:29:24,687 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:29:24,688 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:29:26,096 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-11 23:29:26,278 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-11 23:29:26,278 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:29:26,283 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:29:26,312 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:29:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:29:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:29:26,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:26,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:26,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:26,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:26,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-11 23:29:26,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:26,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084632037] [2020-09-11 23:29:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:26,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084632037] [2020-09-11 23:29:26,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:26,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:29:26,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [103277185] [2020-09-11 23:29:26,616 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:26,620 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:26,636 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:29:26,636 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:26,638 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:29:26,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:29:26,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:29:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:29:26,661 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:29:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:26,699 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-09-11 23:29:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:29:26,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:29:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:26,735 INFO L225 Difference]: With dead ends: 266 [2020-09-11 23:29:26,735 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 23:29:26,739 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 [2020-09-11 23:29:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 23:29:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 23:29:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 23:29:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 23:29:26,838 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-09-11 23:29:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:26,839 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 23:29:26,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:29:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 23:29:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:29:26,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:26,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:26,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:29:26,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-09-11 23:29:26,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:26,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33302878] [2020-09-11 23:29:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:26,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33302878] [2020-09-11 23:29:26,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:26,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:29:26,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [295660454] [2020-09-11 23:29:26,933 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:26,934 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:26,937 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-11 23:29:26,937 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:26,961 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:29:26,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:29:26,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:26,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:29:26,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:29:26,964 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-09-11 23:29:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:27,006 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-09-11 23:29:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:29:27,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-11 23:29:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:27,009 INFO L225 Difference]: With dead ends: 254 [2020-09-11 23:29:27,009 INFO L226 Difference]: Without dead ends: 190 [2020-09-11 23:29:27,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:29:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-11 23:29:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-11 23:29:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-11 23:29:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-09-11 23:29:27,026 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-09-11 23:29:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:27,027 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-09-11 23:29:27,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:29:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-09-11 23:29:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:29:27,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:27,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:27,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:29:27,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:27,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-09-11 23:29:27,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:27,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749982665] [2020-09-11 23:29:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:27,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749982665] [2020-09-11 23:29:27,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:27,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:29:27,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1364745966] [2020-09-11 23:29:27,139 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:27,140 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:27,143 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-11 23:29:27,143 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:27,172 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:29:27,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:29:27,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:27,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:29:27,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:29:27,173 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-09-11 23:29:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:27,203 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-09-11 23:29:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:29:27,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 23:29:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:27,205 INFO L225 Difference]: With dead ends: 286 [2020-09-11 23:29:27,206 INFO L226 Difference]: Without dead ends: 178 [2020-09-11 23:29:27,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:29:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-11 23:29:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-09-11 23:29:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-11 23:29:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-09-11 23:29:27,217 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-09-11 23:29:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:27,218 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-09-11 23:29:27,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:29:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-09-11 23:29:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:29:27,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:27,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:27,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:29:27,220 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-09-11 23:29:27,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:27,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725600766] [2020-09-11 23:29:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:27,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725600766] [2020-09-11 23:29:27,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:27,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:29:27,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1799249649] [2020-09-11 23:29:27,303 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:27,308 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:27,310 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-11 23:29:27,311 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:27,366 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:29:27,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:29:27,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:27,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:29:27,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:29:27,368 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-09-11 23:29:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:27,385 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-09-11 23:29:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:29:27,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 23:29:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:27,387 INFO L225 Difference]: With dead ends: 174 [2020-09-11 23:29:27,387 INFO L226 Difference]: Without dead ends: 72 [2020-09-11 23:29:27,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:29:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-11 23:29:27,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-11 23:29:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-11 23:29:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-09-11 23:29:27,393 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-09-11 23:29:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:27,393 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-09-11 23:29:27,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:29:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-09-11 23:29:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:29:27,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:27,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:27,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:29:27,395 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:27,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-09-11 23:29:27,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:27,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894677280] [2020-09-11 23:29:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:27,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894677280] [2020-09-11 23:29:27,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:27,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:29:27,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2018195682] [2020-09-11 23:29:27,484 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:27,485 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:27,490 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-09-11 23:29:27,490 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:27,544 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,573 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,589 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,628 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,708 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2916#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:29:27,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:29:27,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:29:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:29:27,709 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 5 states. [2020-09-11 23:29:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:27,763 INFO L93 Difference]: Finished difference Result 71 states and 136 transitions. [2020-09-11 23:29:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:29:27,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 23:29:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:27,765 INFO L225 Difference]: With dead ends: 71 [2020-09-11 23:29:27,765 INFO L226 Difference]: Without dead ends: 47 [2020-09-11 23:29:27,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:29:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-11 23:29:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-11 23:29:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-11 23:29:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-09-11 23:29:27,769 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 13 [2020-09-11 23:29:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:27,769 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-09-11 23:29:27,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:29:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-09-11 23:29:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:29:27,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:27,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:27,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:29:27,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:27,771 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-09-11 23:29:27,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:27,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174645971] [2020-09-11 23:29:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:27,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174645971] [2020-09-11 23:29:27,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:27,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:29:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1044470986] [2020-09-11 23:29:27,854 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:27,856 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:27,861 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-09-11 23:29:27,861 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:27,874 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:29:27,931 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3094#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:29:27,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:29:27,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:29:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:29:27,932 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-09-11 23:29:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:27,999 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-09-11 23:29:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:29:27,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 23:29:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:28,000 INFO L225 Difference]: With dead ends: 44 [2020-09-11 23:29:28,000 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 23:29:28,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:29:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 23:29:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 23:29:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 23:29:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-09-11 23:29:28,004 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-09-11 23:29:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:28,005 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-09-11 23:29:28,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:29:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-09-11 23:29:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:29:28,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:29:28,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:29:28,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:29:28,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:29:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:29:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-09-11 23:29:28,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:29:28,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223740467] [2020-09-11 23:29:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:29:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:29:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:29:28,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223740467] [2020-09-11 23:29:28,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:29:28,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:29:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [539842591] [2020-09-11 23:29:28,071 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:29:28,074 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:29:28,080 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 59 transitions. [2020-09-11 23:29:28,080 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:29:28,123 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:29:28,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:29:28,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:29:28,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:29:28,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:29:28,124 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-09-11 23:29:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:29:28,135 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-09-11 23:29:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:29:28,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:29:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:29:28,136 INFO L225 Difference]: With dead ends: 37 [2020-09-11 23:29:28,136 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:29:28,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:29:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:29:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:29:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:29:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:29:28,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:29:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:29:28,138 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:29:28,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:29:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:29:28,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:29:28,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:29:28,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:29:28 BasicIcfg [2020-09-11 23:29:28,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:29:28,146 INFO L168 Benchmark]: Toolchain (without parser) took 5144.95 ms. Allocated memory was 138.9 MB in the beginning and 250.6 MB in the end (delta: 111.7 MB). Free memory was 100.7 MB in the beginning and 149.8 MB in the end (delta: -49.2 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:29:28,147 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:29:28,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.74 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 156.7 MB in the end (delta: -56.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-11 23:29:28,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.48 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 154.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:29:28,149 INFO L168 Benchmark]: Boogie Preprocessor took 41.22 ms. Allocated memory is still 201.9 MB. Free memory was 154.6 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-11 23:29:28,150 INFO L168 Benchmark]: RCFGBuilder took 510.30 ms. Allocated memory is still 201.9 MB. Free memory was 153.2 MB in the beginning and 130.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:29:28,151 INFO L168 Benchmark]: TraceAbstraction took 3701.75 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 130.2 MB in the beginning and 149.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:29:28,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 807.74 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 156.7 MB in the end (delta: -56.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.48 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 154.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.22 ms. Allocated memory is still 201.9 MB. Free memory was 154.6 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.30 ms. Allocated memory is still 201.9 MB. Free memory was 153.2 MB in the beginning and 130.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3701.75 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 130.2 MB in the beginning and 149.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 140 SDtfs, 100 SDslu, 160 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 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, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...