/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:23:41,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:23:41,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:23:41,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:23:41,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:23:41,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:23:41,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:23:41,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:23:41,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:23:41,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:23:41,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:23:41,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:23:41,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:23:41,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:23:41,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:23:41,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:23:41,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:23:41,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:23:41,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:23:41,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:23:41,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:23:41,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:23:41,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:23:41,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:23:41,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:23:41,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:23:41,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:23:41,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:23:41,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:23:41,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:23:41,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:23:41,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:23:41,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:23:41,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:23:41,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:23:41,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:23:41,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:23:41,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:23:41,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:23:41,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:23:41,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:23:41,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:23:41,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:23:41,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:23:41,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:23:41,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:23:41,561 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:23:41,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:23:41,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:23:41,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:23:41,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:23:41,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:23:41,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:23:41,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:23:41,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:23:41,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:23:41,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:23:41,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:23:41,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:23:41,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:23:41,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:23:41,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:23:41,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:23:41,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:23:41,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:23:41,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:23:41,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:23:41,565 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:23:41,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:23:41,568 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:23:41,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:23:41,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:23:41,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:23:41,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:23:41,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:23:41,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:23:41,883 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:23:41,884 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-04-18 11:23:41,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33886db27/b153b5ceca1e4d68a11192a9e2957d21/FLAG65a29cfb0 [2020-04-18 11:23:42,510 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:23:42,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-04-18 11:23:42,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33886db27/b153b5ceca1e4d68a11192a9e2957d21/FLAG65a29cfb0 [2020-04-18 11:23:42,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33886db27/b153b5ceca1e4d68a11192a9e2957d21 [2020-04-18 11:23:42,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:23:42,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:23:42,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:23:42,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:23:42,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:23:42,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:23:42" (1/1) ... [2020-04-18 11:23:42,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247da443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:42, skipping insertion in model container [2020-04-18 11:23:42,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:23:42" (1/1) ... [2020-04-18 11:23:42,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:23:42,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:23:43,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:23:43,447 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:23:43,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:23:43,579 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:23:43,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43 WrapperNode [2020-04-18 11:23:43,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:23:43,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:23:43,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:23:43,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:23:43,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:23:43,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:23:43,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:23:43,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:23:43,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... [2020-04-18 11:23:43,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:23:43,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:23:43,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:23:43,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:23:43,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:23:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:23:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:23:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:23:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:23:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:23:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:23:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:23:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:23:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:23:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:23:43,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:23:43,715 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:23:44,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:23:44,062 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:23:44,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:23:44 BoogieIcfgContainer [2020-04-18 11:23:44,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:23:44,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:23:44,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:23:44,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:23:44,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:23:42" (1/3) ... [2020-04-18 11:23:44,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f763df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:23:44, skipping insertion in model container [2020-04-18 11:23:44,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:23:43" (2/3) ... [2020-04-18 11:23:44,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f763df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:23:44, skipping insertion in model container [2020-04-18 11:23:44,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:23:44" (3/3) ... [2020-04-18 11:23:44,074 INFO L109 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-04-18 11:23:44,083 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:23:44,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:23:44,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:23:44,091 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:23:44,114 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,114 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,115 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,115 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,116 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,116 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,116 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,117 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,117 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,117 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,118 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,118 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,122 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,123 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,123 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,123 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,136 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,137 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,137 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,137 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:23:44,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:23:44,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:23:44,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:23:44,172 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:23:44,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:23:44,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:23:44,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:23:44,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:23:44,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:23:44,188 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 11:23:44,190 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 11:23:44,227 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 11:23:44,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:23:44,232 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:23:44,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 11:23:44,257 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 11:23:44,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:23:44,259 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:23:44,262 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 11:23:44,263 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:23:45,767 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1209 [2020-04-18 11:23:45,767 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-18 11:23:45,771 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 11:23:45,784 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 11:23:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:23:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:23:45,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:23:45,794 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:23:45,794 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:23:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1785955775, now seen corresponding path program 1 times [2020-04-18 11:23:45,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:23:45,807 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [713155171] [2020-04-18 11:23:45,822 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:45,833 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:23:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:23:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:23:45,835 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:23:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1785955775, now seen corresponding path program 2 times [2020-04-18 11:23:45,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:45,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332114250] [2020-04-18 11:23:45,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:46,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332114250] [2020-04-18 11:23:46,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:46,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:23:46,066 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:46,067 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,069 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:23:46,069 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:46,075 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:46,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:46,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:46,081 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 11:23:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,085 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:23:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:23:46,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:46,086 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [713155171] [2020-04-18 11:23:46,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:46,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:23:46,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [713155171] [2020-04-18 11:23:46,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:23:46,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:46,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:46,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:46,094 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 11:23:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,121 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 11:23:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:23:46,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 11:23:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:46,151 INFO L225 Difference]: With dead ends: 72 [2020-04-18 11:23:46,151 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 11:23:46,153 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 11:23:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 11:23:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 11:23:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 11:23:46,216 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 11:23:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:46,217 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 11:23:46,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:23:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 11:23:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:23:46,223 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:23:46,228 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:23:46,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:23:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,229 INFO L82 PathProgramCache]: Analyzing trace with hash -469946389, now seen corresponding path program 1 times [2020-04-18 11:23:46,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:23:46,230 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [998483712] [2020-04-18 11:23:46,230 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,233 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 15 transitions. [2020-04-18 11:23:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:23:46,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:23:46,234 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:23:46,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,234 INFO L82 PathProgramCache]: Analyzing trace with hash -469945669, now seen corresponding path program 2 times [2020-04-18 11:23:46,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:46,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252048787] [2020-04-18 11:23:46,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:46,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252048787] [2020-04-18 11:23:46,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:46,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:46,331 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:46,331 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,334 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 11:23:46,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:46,341 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:46,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:46,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:46,342 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 11:23:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,348 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 11:23:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 11:23:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:23:46,349 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:23:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash -469946389, now seen corresponding path program 3 times [2020-04-18 11:23:46,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:46,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281641799] [2020-04-18 11:23:46,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:46,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281641799] [2020-04-18 11:23:46,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:46,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:46,474 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:46,475 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,476 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-04-18 11:23:46,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:46,489 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:46,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:46,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:46,490 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2020-04-18 11:23:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,503 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 11:23:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 11:23:46,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:46,504 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [998483712] [2020-04-18 11:23:46,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:46,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:23:46,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [998483712] [2020-04-18 11:23:46,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:23:46,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:46,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:46,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:23:46,506 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 5 states. [2020-04-18 11:23:46,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,564 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-18 11:23:46,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:23:46,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-04-18 11:23:46,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:46,566 INFO L225 Difference]: With dead ends: 56 [2020-04-18 11:23:46,566 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 11:23:46,567 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:23:46,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 11:23:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 11:23:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 11:23:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 11:23:46,573 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-04-18 11:23:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:46,573 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 11:23:46,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:23:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 11:23:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:23:46,574 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:23:46,574 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:23:46,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:23:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,574 INFO L82 PathProgramCache]: Analyzing trace with hash -658099301, now seen corresponding path program 1 times [2020-04-18 11:23:46,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:23:46,575 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1637923516] [2020-04-18 11:23:46,575 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,576 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 33 transitions. [2020-04-18 11:23:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 11:23:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:23:46,577 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:23:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash -646217951, now seen corresponding path program 2 times [2020-04-18 11:23:46,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:46,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389869793] [2020-04-18 11:23:46,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:46,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389869793] [2020-04-18 11:23:46,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:46,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:46,615 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:46,615 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,616 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:23:46,616 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:46,619 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:46,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:46,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:46,620 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-04-18 11:23:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,624 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 11:23:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 11:23:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:23:46,624 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:23:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash -646909871, now seen corresponding path program 3 times [2020-04-18 11:23:46,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:46,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982949503] [2020-04-18 11:23:46,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:46,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982949503] [2020-04-18 11:23:46,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:46,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:46,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:46,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,696 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:23:46,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:46,708 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:46,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:46,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:46,709 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-04-18 11:23:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,743 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2020-04-18 11:23:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-04-18 11:23:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:23:46,743 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:23:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,744 INFO L82 PathProgramCache]: Analyzing trace with hash -658099301, now seen corresponding path program 4 times [2020-04-18 11:23:46,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:46,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040861240] [2020-04-18 11:23:46,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:46,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040861240] [2020-04-18 11:23:46,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:46,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:46,804 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:46,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:23:46,806 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:46,856 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:23:46,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:23:46,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:23:46,857 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2020-04-18 11:23:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,879 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2020-04-18 11:23:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-04-18 11:23:46,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:46,880 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1637923516] [2020-04-18 11:23:46,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:46,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:23:46,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1637923516] [2020-04-18 11:23:46,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:23:46,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:23:46,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:23:46,882 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 7 states. [2020-04-18 11:23:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:46,940 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 11:23:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:23:46,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-04-18 11:23:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:46,941 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:23:46,941 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 11:23:46,942 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:23:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 11:23:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 11:23:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 11:23:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 11:23:46,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 11:23:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:46,946 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 11:23:46,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:23:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:23:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:46,947 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:23:46,947 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:23:46,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:23:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash 967414389, now seen corresponding path program 1 times [2020-04-18 11:23:46,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:23:46,948 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1245596781] [2020-04-18 11:23:46,949 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:46,950 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 11:23:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:23:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:46,952 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:23:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:46,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1435520459, now seen corresponding path program 2 times [2020-04-18 11:23:46,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:46,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630185582] [2020-04-18 11:23:46,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:47,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630185582] [2020-04-18 11:23:47,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:47,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:47,009 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:47,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:47,012 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 11:23:47,012 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:47,015 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:47,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:47,016 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2020-04-18 11:23:47,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:47,025 INFO L93 Difference]: Finished difference Result 72 states and 140 transitions. [2020-04-18 11:23:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 140 transitions. [2020-04-18 11:23:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:47,026 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:23:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:47,027 INFO L82 PathProgramCache]: Analyzing trace with hash -573672699, now seen corresponding path program 3 times [2020-04-18 11:23:47,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:47,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306855165] [2020-04-18 11:23:47,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:47,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306855165] [2020-04-18 11:23:47,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:47,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:47,094 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:47,095 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:47,097 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:23:47,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:47,109 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:47,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:47,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:47,110 INFO L87 Difference]: Start difference. First operand 72 states and 140 transitions. Second operand 4 states. [2020-04-18 11:23:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:47,139 INFO L93 Difference]: Finished difference Result 86 states and 159 transitions. [2020-04-18 11:23:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 159 transitions. [2020-04-18 11:23:47,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:47,141 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:23:47,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:47,141 INFO L82 PathProgramCache]: Analyzing trace with hash 967421499, now seen corresponding path program 4 times [2020-04-18 11:23:47,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:47,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19260654] [2020-04-18 11:23:47,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:47,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19260654] [2020-04-18 11:23:47,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:47,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:47,165 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:47,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:47,168 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-04-18 11:23:47,168 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:47,199 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:47,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:47,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:23:47,200 INFO L87 Difference]: Start difference. First operand 86 states and 159 transitions. Second operand 3 states. [2020-04-18 11:23:47,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:47,208 INFO L93 Difference]: Finished difference Result 126 states and 217 transitions. [2020-04-18 11:23:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 217 transitions. [2020-04-18 11:23:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:47,210 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:23:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:47,210 INFO L82 PathProgramCache]: Analyzing trace with hash 996865899, now seen corresponding path program 5 times [2020-04-18 11:23:47,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:47,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115840240] [2020-04-18 11:23:47,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:47,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115840240] [2020-04-18 11:23:47,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:47,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:23:47,266 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:47,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:47,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 11:23:47,269 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:47,298 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:23:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:23:47,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:23:47,299 INFO L87 Difference]: Start difference. First operand 126 states and 217 transitions. Second operand 6 states. [2020-04-18 11:23:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:47,358 INFO L93 Difference]: Finished difference Result 130 states and 219 transitions. [2020-04-18 11:23:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 219 transitions. [2020-04-18 11:23:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:47,359 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:23:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:47,360 INFO L82 PathProgramCache]: Analyzing trace with hash -129480839, now seen corresponding path program 6 times [2020-04-18 11:23:47,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:47,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842673027] [2020-04-18 11:23:47,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:47,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842673027] [2020-04-18 11:23:47,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:47,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:47,413 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:47,414 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:47,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-04-18 11:23:47,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:47,443 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:23:47,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:23:47,443 INFO L87 Difference]: Start difference. First operand 130 states and 219 transitions. Second operand 4 states. [2020-04-18 11:23:47,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:47,463 INFO L93 Difference]: Finished difference Result 188 states and 292 transitions. [2020-04-18 11:23:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 292 transitions. [2020-04-18 11:23:47,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:47,464 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1245596781] [2020-04-18 11:23:47,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:47,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:23:47,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1245596781] [2020-04-18 11:23:47,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:23:47,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:47,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:23:47,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:23:47,467 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 10 states. [2020-04-18 11:23:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:47,693 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:23:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 11:23:47,693 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 11:23:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:47,694 INFO L225 Difference]: With dead ends: 41 [2020-04-18 11:23:47,694 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:23:47,694 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:23:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:23:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:23:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:23:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:23:47,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 11:23:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:47,695 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:23:47,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:23:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:23:47,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:47,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:23:47 BasicIcfg [2020-04-18 11:23:47,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:23:47,703 INFO L168 Benchmark]: Toolchain (without parser) took 4894.76 ms. Allocated memory was 145.8 MB in the beginning and 247.5 MB in the end (delta: 101.7 MB). Free memory was 102.5 MB in the beginning and 149.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:47,704 INFO L168 Benchmark]: CDTParser took 1.35 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:23:47,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.44 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 161.5 MB in the end (delta: -61.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:47,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.57 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 159.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:47,706 INFO L168 Benchmark]: Boogie Preprocessor took 23.68 ms. Allocated memory is still 203.4 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. [2020-04-18 11:23:47,707 INFO L168 Benchmark]: RCFGBuilder took 413.12 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 137.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:47,708 INFO L168 Benchmark]: TraceAbstraction took 3632.47 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 137.9 MB in the beginning and 149.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:47,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.44 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 161.5 MB in the end (delta: -61.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.57 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 159.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.68 ms. Allocated memory is still 203.4 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 413.12 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 137.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3632.47 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 137.9 MB in the beginning and 149.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 364 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1209 CheckedPairsTotal, 47 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 51 SDtfs, 87 SDslu, 99 SDs, 0 SdLazy, 129 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...