/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:48:02,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:48:02,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:48:02,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:48:02,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:48:02,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:48:02,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:48:02,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:48:02,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:48:02,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:48:02,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:48:02,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:48:02,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:48:02,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:48:02,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:48:02,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:48:02,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:48:02,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:48:02,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:48:02,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:48:02,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:48:02,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:48:02,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:48:02,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:48:02,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:48:02,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:48:02,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:48:02,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:48:02,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:48:02,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:48:02,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:48:02,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:48:02,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:48:02,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:48:02,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:48:02,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:48:02,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:48:02,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:48:02,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:48:02,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:48:02,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:48:02,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:48:02,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:48:02,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:48:02,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:48:02,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:48:02,601 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:48:02,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:48:02,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:48:02,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:48:02,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:48:02,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:48:02,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:48:02,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:48:02,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:48:02,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:48:02,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:48:02,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:48:02,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:48:02,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:48:02,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:48:02,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:48:02,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:48:02,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:48:02,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:48:02,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:48:02,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:48:02,605 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:48:02,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:48:02,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:48:02,606 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:48:02,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:48:02,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:48:02,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:48:02,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:48:02,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:48:02,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:48:02,887 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:48:02,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-18 15:48:02,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6531828ca/b5fc970501874ac086f94b68ccba8461/FLAG279fe8eda [2020-04-18 15:48:03,507 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:48:03,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-04-18 15:48:03,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6531828ca/b5fc970501874ac086f94b68ccba8461/FLAG279fe8eda [2020-04-18 15:48:03,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6531828ca/b5fc970501874ac086f94b68ccba8461 [2020-04-18 15:48:03,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:48:03,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:48:03,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:48:03,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:48:03,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:48:03,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:48:03" (1/1) ... [2020-04-18 15:48:03,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:03, skipping insertion in model container [2020-04-18 15:48:03,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:48:03" (1/1) ... [2020-04-18 15:48:03,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:48:03,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:48:04,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:48:04,409 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:48:04,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:48:04,566 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:48:04,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04 WrapperNode [2020-04-18 15:48:04,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:48:04,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:48:04,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:48:04,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:48:04,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:48:04,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:48:04,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:48:04,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:48:04,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... [2020-04-18 15:48:04,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:48:04,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:48:04,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:48:04,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:48:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:48:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:48:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:48:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:48:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:48:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:48:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:48:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:48:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:48:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:48:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:48:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:48:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:48:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:48:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:48:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:48:04,722 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:48:05,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:48:05,151 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:48:05,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:48:05 BoogieIcfgContainer [2020-04-18 15:48:05,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:48:05,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:48:05,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:48:05,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:48:05,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:48:03" (1/3) ... [2020-04-18 15:48:05,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce55d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:48:05, skipping insertion in model container [2020-04-18 15:48:05,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:48:04" (2/3) ... [2020-04-18 15:48:05,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce55d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:48:05, skipping insertion in model container [2020-04-18 15:48:05,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:48:05" (3/3) ... [2020-04-18 15:48:05,165 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-04-18 15:48:05,175 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:48:05,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:48:05,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:48:05,184 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:48:05,213 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,213 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,214 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,214 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,215 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,216 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,216 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,216 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,217 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,217 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,217 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,218 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,218 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,218 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,219 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,219 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,219 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,220 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,220 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,220 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,221 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,221 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,225 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,226 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,226 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,226 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,232 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,232 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,233 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,233 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,237 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,237 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,237 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,238 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,240 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,240 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,240 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,241 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:48:05,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:48:05,292 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:48:05,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:48:05,293 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:48:05,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:48:05,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:48:05,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:48:05,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:48:05,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:48:05,318 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 15:48:05,320 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 15:48:05,388 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 15:48:05,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:48:05,394 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 15:48:05,399 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 15:48:05,423 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 15:48:05,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:48:05,425 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 15:48:05,428 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 15:48:05,429 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:48:07,005 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 15:48:07,072 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 15:48:07,073 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 15:48:07,076 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 15:48:07,181 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 15:48:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 15:48:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:48:07,194 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:07,195 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:07,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:07,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:07,201 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 15:48:07,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:07,207 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1219996071] [2020-04-18 15:48:07,219 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:07,235 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:48:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:48:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:48:07,239 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 2 times [2020-04-18 15:48:07,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:07,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835597180] [2020-04-18 15:48:07,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:07,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835597180] [2020-04-18 15:48:07,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:07,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:48:07,510 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:07,512 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:07,518 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:48:07,518 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:07,523 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:48:07,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:48:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:48:07,529 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 15:48:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:07,535 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:48:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:48:07,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:07,539 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1219996071] [2020-04-18 15:48:07,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:07,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:48:07,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1219996071] [2020-04-18 15:48:07,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:48:07,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:07,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:48:07,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:48:07,555 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 15:48:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:07,602 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 15:48:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:48:07,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 15:48:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:07,643 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 15:48:07,643 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 15:48:07,646 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:48:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 15:48:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 15:48:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 15:48:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 15:48:07,803 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 15:48:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:07,804 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 15:48:07,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:48:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 15:48:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:48:07,814 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:07,814 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:07,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:07,815 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 15:48:07,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:07,815 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1285104339] [2020-04-18 15:48:07,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:07,816 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:48:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:48:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:48:07,818 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 2 times [2020-04-18 15:48:07,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:07,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588945428] [2020-04-18 15:48:07,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:07,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588945428] [2020-04-18 15:48:07,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:07,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:48:07,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:07,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:07,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:48:07,968 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:07,980 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:48:07,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:48:07,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:48:07,981 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:48:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:07,993 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 15:48:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 15:48:07,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:07,994 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1285104339] [2020-04-18 15:48:07,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:07,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:48:07,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1285104339] [2020-04-18 15:48:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:48:07,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:48:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:07,997 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 15:48:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,040 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 15:48:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:48:08,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:48:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:08,051 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 15:48:08,051 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 15:48:08,052 INFO L678 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 [2020-04-18 15:48:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 15:48:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 15:48:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 15:48:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 15:48:08,097 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 15:48:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:08,098 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 15:48:08,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:48:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 15:48:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:48:08,100 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:08,101 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:08,101 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 1 times [2020-04-18 15:48:08,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:08,103 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [447576501] [2020-04-18 15:48:08,103 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:48:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:48:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:48:08,106 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 2 times [2020-04-18 15:48:08,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:08,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103915304] [2020-04-18 15:48:08,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:08,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103915304] [2020-04-18 15:48:08,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:08,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:48:08,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:08,269 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-04-18 15:48:08,271 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:08,284 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:48:08,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:48:08,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:48:08,285 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 15:48:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,293 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 15:48:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 15:48:08,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:08,294 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [447576501] [2020-04-18 15:48:08,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:08,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:48:08,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [447576501] [2020-04-18 15:48:08,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:48:08,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:08,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:48:08,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:08,296 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-18 15:48:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,326 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 15:48:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:48:08,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:48:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:08,335 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 15:48:08,335 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 15:48:08,335 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 15:48:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 15:48:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 15:48:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 15:48:08,373 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 15:48:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:08,374 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 15:48:08,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:48:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 15:48:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:48:08,376 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:08,376 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:08,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,377 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-04-18 15:48:08,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:08,377 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1704503114] [2020-04-18 15:48:08,378 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,379 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 68 transitions. [2020-04-18 15:48:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:48:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:48:08,380 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,380 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 2 times [2020-04-18 15:48:08,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:08,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609737110] [2020-04-18 15:48:08,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:08,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609737110] [2020-04-18 15:48:08,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:08,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:48:08,434 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:08,436 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,439 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 54 transitions. [2020-04-18 15:48:08,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:08,447 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:48:08,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:48:08,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:48:08,448 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 15:48:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,461 INFO L93 Difference]: Finished difference Result 38 states and 68 transitions. [2020-04-18 15:48:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 68 transitions. [2020-04-18 15:48:08,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:08,462 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1704503114] [2020-04-18 15:48:08,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:08,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:48:08,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1704503114] [2020-04-18 15:48:08,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:48:08,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:08,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:48:08,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:08,464 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-18 15:48:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,487 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-18 15:48:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:48:08,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 15:48:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:08,495 INFO L225 Difference]: With dead ends: 1042 [2020-04-18 15:48:08,496 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 15:48:08,496 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 15:48:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-18 15:48:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-18 15:48:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-18 15:48:08,529 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-18 15:48:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:08,529 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-18 15:48:08,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:48:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-18 15:48:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:48:08,532 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:08,532 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:08,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-18 15:48:08,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:08,533 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [71329005] [2020-04-18 15:48:08,534 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,535 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 112 transitions. [2020-04-18 15:48:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 15:48:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:48:08,536 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:08,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,537 INFO L82 PathProgramCache]: Analyzing trace with hash 517042550, now seen corresponding path program 2 times [2020-04-18 15:48:08,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:08,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310949706] [2020-04-18 15:48:08,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:08,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310949706] [2020-04-18 15:48:08,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:08,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:08,607 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:08,608 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2020-04-18 15:48:08,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:08,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:48:08,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:48:08,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:48:08,679 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2020-04-18 15:48:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,707 INFO L93 Difference]: Finished difference Result 54 states and 112 transitions. [2020-04-18 15:48:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 112 transitions. [2020-04-18 15:48:08,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:08,708 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [71329005] [2020-04-18 15:48:08,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:08,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:48:08,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [71329005] [2020-04-18 15:48:08,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:48:08,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:08,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:48:08,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:48:08,710 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 6 states. [2020-04-18 15:48:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,758 INFO L93 Difference]: Finished difference Result 1126 states and 3833 transitions. [2020-04-18 15:48:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:48:08,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 15:48:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:08,764 INFO L225 Difference]: With dead ends: 1126 [2020-04-18 15:48:08,764 INFO L226 Difference]: Without dead ends: 508 [2020-04-18 15:48:08,765 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:48:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-04-18 15:48:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-04-18 15:48:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-04-18 15:48:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1638 transitions. [2020-04-18 15:48:08,786 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1638 transitions. Word has length 14 [2020-04-18 15:48:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:08,786 INFO L479 AbstractCegarLoop]: Abstraction has 508 states and 1638 transitions. [2020-04-18 15:48:08,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:48:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1638 transitions. [2020-04-18 15:48:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:48:08,788 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:08,788 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:08,788 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash -953413178, now seen corresponding path program 1 times [2020-04-18 15:48:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:08,793 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1729393149] [2020-04-18 15:48:08,794 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,795 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 156 transitions. [2020-04-18 15:48:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 15:48:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:48:08,797 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1151551228, now seen corresponding path program 2 times [2020-04-18 15:48:08,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:08,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48276116] [2020-04-18 15:48:08,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:08,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48276116] [2020-04-18 15:48:08,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:08,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:08,884 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:08,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,891 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 60 transitions. [2020-04-18 15:48:08,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:08,904 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:48:08,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:08,905 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 5 states. [2020-04-18 15:48:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,926 INFO L93 Difference]: Finished difference Result 70 states and 156 transitions. [2020-04-18 15:48:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 156 transitions. [2020-04-18 15:48:08,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:08,927 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1729393149] [2020-04-18 15:48:08,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:08,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:48:08,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1729393149] [2020-04-18 15:48:08,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:48:08,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:08,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:48:08,929 INFO L87 Difference]: Start difference. First operand 508 states and 1638 transitions. Second operand 5 states. [2020-04-18 15:48:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:08,959 INFO L93 Difference]: Finished difference Result 628 states and 1988 transitions. [2020-04-18 15:48:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:48:08,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 15:48:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:08,962 INFO L225 Difference]: With dead ends: 628 [2020-04-18 15:48:08,962 INFO L226 Difference]: Without dead ends: 286 [2020-04-18 15:48:08,962 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:48:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-04-18 15:48:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2020-04-18 15:48:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-04-18 15:48:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 856 transitions. [2020-04-18 15:48:08,972 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 856 transitions. Word has length 15 [2020-04-18 15:48:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:08,972 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 856 transitions. [2020-04-18 15:48:08,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:48:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 856 transitions. [2020-04-18 15:48:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:48:08,974 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:08,974 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:08,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1823834024, now seen corresponding path program 1 times [2020-04-18 15:48:08,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:08,975 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1044040059] [2020-04-18 15:48:08,975 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:08,977 INFO L259 McrAutomatonBuilder]: Finished intersection with 104 states and 250 transitions. [2020-04-18 15:48:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-04-18 15:48:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:48:08,979 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2122226776, now seen corresponding path program 2 times [2020-04-18 15:48:08,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:08,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402982693] [2020-04-18 15:48:08,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:09,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402982693] [2020-04-18 15:48:09,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:09,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:09,043 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:09,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,078 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 58 transitions. [2020-04-18 15:48:09,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:09,099 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:48:09,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:09,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:09,100 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 5 states. [2020-04-18 15:48:09,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,113 INFO L93 Difference]: Finished difference Result 104 states and 250 transitions. [2020-04-18 15:48:09,113 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 250 transitions. [2020-04-18 15:48:09,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:09,114 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1044040059] [2020-04-18 15:48:09,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:09,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:48:09,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1044040059] [2020-04-18 15:48:09,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:48:09,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:09,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:09,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:48:09,116 INFO L87 Difference]: Start difference. First operand 286 states and 856 transitions. Second operand 5 states. [2020-04-18 15:48:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,182 INFO L93 Difference]: Finished difference Result 310 states and 896 transitions. [2020-04-18 15:48:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:48:09,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 15:48:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:09,185 INFO L225 Difference]: With dead ends: 310 [2020-04-18 15:48:09,185 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 15:48:09,185 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:48:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 15:48:09,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 15:48:09,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 15:48:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-04-18 15:48:09,194 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-04-18 15:48:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:09,194 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-04-18 15:48:09,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:48:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-04-18 15:48:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:48:09,195 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:09,196 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:09,196 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,196 INFO L82 PathProgramCache]: Analyzing trace with hash 704255862, now seen corresponding path program 1 times [2020-04-18 15:48:09,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:09,197 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1377683262] [2020-04-18 15:48:09,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,200 INFO L259 McrAutomatonBuilder]: Finished intersection with 188 states and 546 transitions. [2020-04-18 15:48:09,202 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-04-18 15:48:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:48:09,203 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1364520762, now seen corresponding path program 2 times [2020-04-18 15:48:09,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:09,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426720299] [2020-04-18 15:48:09,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:09,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426720299] [2020-04-18 15:48:09,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:09,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:09,270 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:09,271 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 71 transitions. [2020-04-18 15:48:09,280 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:09,303 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:48:09,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:09,304 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2020-04-18 15:48:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,330 INFO L93 Difference]: Finished difference Result 224 states and 630 transitions. [2020-04-18 15:48:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 630 transitions. [2020-04-18 15:48:09,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:48:09,332 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:48:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1338463092, now seen corresponding path program 3 times [2020-04-18 15:48:09,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:09,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228629355] [2020-04-18 15:48:09,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:09,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228629355] [2020-04-18 15:48:09,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:09,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:48:09,390 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:09,391 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,401 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 172 transitions. [2020-04-18 15:48:09,401 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:09,430 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:48:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:48:09,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:48:09,431 INFO L87 Difference]: Start difference. First operand 224 states and 630 transitions. Second operand 6 states. [2020-04-18 15:48:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,468 INFO L93 Difference]: Finished difference Result 224 states and 630 transitions. [2020-04-18 15:48:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 630 transitions. [2020-04-18 15:48:09,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:09,469 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1377683262] [2020-04-18 15:48:09,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:09,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:48:09,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1377683262] [2020-04-18 15:48:09,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:48:09,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:48:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:48:09,471 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 8 states. [2020-04-18 15:48:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,596 INFO L93 Difference]: Finished difference Result 398 states and 1145 transitions. [2020-04-18 15:48:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 15:48:09,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-04-18 15:48:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:09,598 INFO L225 Difference]: With dead ends: 398 [2020-04-18 15:48:09,598 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 15:48:09,599 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:48:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 15:48:09,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 15:48:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 15:48:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-04-18 15:48:09,604 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-04-18 15:48:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:09,604 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-04-18 15:48:09,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:48:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-04-18 15:48:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:48:09,605 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:48:09,605 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:48:09,605 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:48:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-04-18 15:48:09,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:48:09,606 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1613480709] [2020-04-18 15:48:09,607 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,617 INFO L259 McrAutomatonBuilder]: Finished intersection with 272 states and 842 transitions. [2020-04-18 15:48:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states. [2020-04-18 15:48:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:48:09,622 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:48:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,623 INFO L82 PathProgramCache]: Analyzing trace with hash -649530618, now seen corresponding path program 2 times [2020-04-18 15:48:09,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:09,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129069894] [2020-04-18 15:48:09,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:09,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129069894] [2020-04-18 15:48:09,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:09,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:09,693 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:09,695 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,702 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 79 transitions. [2020-04-18 15:48:09,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:09,722 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:48:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:09,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:48:09,723 INFO L87 Difference]: Start difference. First operand 272 states. Second operand 5 states. [2020-04-18 15:48:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,743 INFO L93 Difference]: Finished difference Result 344 states and 1046 transitions. [2020-04-18 15:48:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1046 transitions. [2020-04-18 15:48:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:48:09,745 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:48:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1457318388, now seen corresponding path program 3 times [2020-04-18 15:48:09,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:09,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562840971] [2020-04-18 15:48:09,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:09,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562840971] [2020-04-18 15:48:09,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:09,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:48:09,810 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:09,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:09,822 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 219 transitions. [2020-04-18 15:48:09,823 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:09,854 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 15:48:09,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:48:09,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:48:09,855 INFO L87 Difference]: Start difference. First operand 344 states and 1046 transitions. Second operand 6 states. [2020-04-18 15:48:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:09,922 INFO L93 Difference]: Finished difference Result 416 states and 1226 transitions. [2020-04-18 15:48:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1226 transitions. [2020-04-18 15:48:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:48:09,924 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:48:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:09,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1434321348, now seen corresponding path program 4 times [2020-04-18 15:48:09,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:09,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228207865] [2020-04-18 15:48:09,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:10,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228207865] [2020-04-18 15:48:10,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:10,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:48:10,018 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:10,020 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:10,032 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 167 transitions. [2020-04-18 15:48:10,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:10,153 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:48:10,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:48:10,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:48:10,154 INFO L87 Difference]: Start difference. First operand 416 states and 1226 transitions. Second operand 8 states. [2020-04-18 15:48:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:10,257 INFO L93 Difference]: Finished difference Result 528 states and 1478 transitions. [2020-04-18 15:48:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1478 transitions. [2020-04-18 15:48:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:48:10,259 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:48:10,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:10,260 INFO L82 PathProgramCache]: Analyzing trace with hash 681993904, now seen corresponding path program 5 times [2020-04-18 15:48:10,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:10,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9899427] [2020-04-18 15:48:10,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:10,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9899427] [2020-04-18 15:48:10,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:10,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:10,324 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:10,325 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:10,332 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 89 transitions. [2020-04-18 15:48:10,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:10,367 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:48:10,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:48:10,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:48:10,368 INFO L87 Difference]: Start difference. First operand 528 states and 1478 transitions. Second operand 5 states. [2020-04-18 15:48:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:10,435 INFO L93 Difference]: Finished difference Result 651 states and 1688 transitions. [2020-04-18 15:48:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1688 transitions. [2020-04-18 15:48:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:48:10,437 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:48:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:48:10,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 6 times [2020-04-18 15:48:10,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:48:10,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321422303] [2020-04-18 15:48:10,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:48:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:48:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:48:10,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321422303] [2020-04-18 15:48:10,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:48:10,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:48:10,512 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:48:10,514 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:48:10,518 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 40 transitions. [2020-04-18 15:48:10,519 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:48:10,619 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:48:10,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:48:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2020-04-18 15:48:10,621 INFO L87 Difference]: Start difference. First operand 651 states and 1688 transitions. Second operand 6 states. [2020-04-18 15:48:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:10,664 INFO L93 Difference]: Finished difference Result 651 states and 1688 transitions. [2020-04-18 15:48:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1688 transitions. [2020-04-18 15:48:10,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:10,667 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1613480709] [2020-04-18 15:48:10,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:48:10,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:48:10,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1613480709] [2020-04-18 15:48:10,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 15:48:10,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:48:10,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 15:48:10,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:48:10,671 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 18 states. [2020-04-18 15:48:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:48:11,043 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-04-18 15:48:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:48:11,044 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2020-04-18 15:48:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:48:11,044 INFO L225 Difference]: With dead ends: 130 [2020-04-18 15:48:11,044 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:48:11,045 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=309, Invalid=1331, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 15:48:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:48:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:48:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:48:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:48:11,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:48:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:48:11,047 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:48:11,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 15:48:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:48:11,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:48:11,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:48:11 BasicIcfg [2020-04-18 15:48:11,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:48:11,053 INFO L168 Benchmark]: Toolchain (without parser) took 7258.42 ms. Allocated memory was 135.3 MB in the beginning and 314.0 MB in the end (delta: 178.8 MB). Free memory was 99.0 MB in the beginning and 139.9 MB in the end (delta: -40.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,054 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.08 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 97.0 MB in the beginning and 155.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 199.8 MB. Free memory was 155.7 MB in the beginning and 153.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,056 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 ms. Allocated memory is still 199.8 MB. Free memory was 153.6 MB in the beginning and 152.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,056 INFO L168 Benchmark]: RCFGBuilder took 505.45 ms. Allocated memory is still 199.8 MB. Free memory was 152.2 MB in the beginning and 127.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,057 INFO L168 Benchmark]: TraceAbstraction took 5894.39 ms. Allocated memory was 199.8 MB in the beginning and 314.0 MB in the end (delta: 114.3 MB). Free memory was 127.1 MB in the beginning and 139.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:48:11,060 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.08 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 97.0 MB in the beginning and 155.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 199.8 MB. Free memory was 155.7 MB in the beginning and 153.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.91 ms. Allocated memory is still 199.8 MB. Free memory was 153.6 MB in the beginning and 152.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.45 ms. Allocated memory is still 199.8 MB. Free memory was 152.2 MB in the beginning and 127.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5894.39 ms. Allocated memory was 199.8 MB in the beginning and 314.0 MB in the end (delta: 114.3 MB). Free memory was 127.1 MB in the beginning and 139.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 246 SDtfs, 501 SDslu, 517 SDs, 0 SdLazy, 226 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 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...