/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/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:29:10,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:29:10,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:29:10,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:29:10,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:29:10,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:29:10,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:29:10,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:29:10,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:29:10,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:29:10,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:29:10,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:29:10,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:29:10,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:29:10,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:29:10,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:29:10,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:29:10,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:29:10,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:29:10,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:29:10,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:29:10,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:29:10,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:29:10,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:29:10,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:29:10,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:29:10,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:29:10,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:29:10,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:29:10,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:29:10,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:29:10,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:29:10,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:29:10,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:29:10,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:29:10,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:29:10,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:29:10,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:29:10,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:29:10,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:29:10,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:29:10,346 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 15:29:10,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:29:10,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:29:10,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:29:10,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:29:10,364 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:29:10,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:29:10,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:29:10,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:29:10,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:29:10,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:29:10,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:29:10,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:29:10,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:29:10,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:29:10,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:29:10,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:29:10,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:29:10,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:29:10,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:29:10,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:29:10,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:29:10,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:29:10,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:29:10,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:29:10,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:29:10,370 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:29:10,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:29:10,371 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:29:10,371 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:29:10,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:29:10,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:29:10,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:29:10,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:29:10,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:29:10,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:29:10,669 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:29:10,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 15:29:10,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c252ff6a8/dfb8cc3e02e5463cae35825125ad791a/FLAG11227b0c4 [2020-04-18 15:29:11,333 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:29:11,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-18 15:29:11,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c252ff6a8/dfb8cc3e02e5463cae35825125ad791a/FLAG11227b0c4 [2020-04-18 15:29:11,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c252ff6a8/dfb8cc3e02e5463cae35825125ad791a [2020-04-18 15:29:11,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:29:11,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:29:11,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:29:11,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:29:11,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:29:11,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:29:11" (1/1) ... [2020-04-18 15:29:11,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6abf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:11, skipping insertion in model container [2020-04-18 15:29:11,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:29:11" (1/1) ... [2020-04-18 15:29:11,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:29:11,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:29:12,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:29:12,120 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:29:12,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:29:12,265 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:29:12,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12 WrapperNode [2020-04-18 15:29:12,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:29:12,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:29:12,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:29:12,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:29:12,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:29:12,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:29:12,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:29:12,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:29:12,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (1/1) ... [2020-04-18 15:29:12,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:29:12,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:29:12,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:29:12,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:29:12,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (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 15:29:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:29:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:29:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:29:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:29:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:29:12,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:29:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:29:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:29:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:29:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:29:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:29:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:29:12,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:29:12,424 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 15:29:12,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:29:12,781 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:29:12,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:29:12 BoogieIcfgContainer [2020-04-18 15:29:12,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:29:12,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:29:12,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:29:12,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:29:12,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:29:11" (1/3) ... [2020-04-18 15:29:12,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67588f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:29:12, skipping insertion in model container [2020-04-18 15:29:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:29:12" (2/3) ... [2020-04-18 15:29:12,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67588f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:29:12, skipping insertion in model container [2020-04-18 15:29:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:29:12" (3/3) ... [2020-04-18 15:29:12,793 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-04-18 15:29:12,804 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:29:12,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:29:12,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:29:12,813 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:29:12,841 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,842 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,842 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,842 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,843 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,843 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,844 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,844 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,844 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,845 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,845 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,845 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,846 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,846 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,846 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,847 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,847 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,847 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,852 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,852 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,853 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,853 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,860 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,860 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,861 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,861 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,865 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,866 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,866 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,866 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:29:12,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:29:12,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:29:12,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:29:12,910 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:29:12,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:29:12,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:29:12,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:29:12,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:29:12,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:29:12,936 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:29:12,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:29:12,992 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:29:12,993 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:29:12,998 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:29:13,001 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:29:13,024 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:29:13,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:29:13,025 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:29:13,027 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:29:13,029 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:29:14,640 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 15:29:14,641 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:29:14,646 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:29:14,681 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:29:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:29:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:29:14,693 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:14,694 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:29:14,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:14,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 15:29:14,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:14,713 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [929561828] [2020-04-18 15:29:14,736 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:14,754 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:29:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:29:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:29:14,757 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 15:29:14,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:14,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879342560] [2020-04-18 15:29:14,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:15,072 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 15:29:15,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879342560] [2020-04-18 15:29:15,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:15,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:29:15,076 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:15,078 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,085 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:29:15,085 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:15,094 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:29:15,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:15,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:15,100 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:29:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,104 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:29:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:29:15,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:15,106 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [929561828] [2020-04-18 15:29:15,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:15,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:29:15,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [929561828] [2020-04-18 15:29:15,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:29:15,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:15,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:15,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:15,114 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:29:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,163 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:29:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:29:15,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:29:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:15,202 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:29:15,203 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:29:15,207 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:29:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:29:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:29:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:29:15,287 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:29:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:15,291 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:29:15,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:29:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:29:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:29:15,292 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:15,293 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:29:15,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-04-18 15:29:15,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:15,296 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1909635149] [2020-04-18 15:29:15,296 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,297 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:29:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:29:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:29:15,298 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -225370989, now seen corresponding path program 2 times [2020-04-18 15:29:15,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:15,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430176409] [2020-04-18 15:29:15,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:15,386 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 15:29:15,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430176409] [2020-04-18 15:29:15,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:15,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:15,387 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:15,388 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,389 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:29:15,389 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:15,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:29:15,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:15,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:15,398 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:29:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,401 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:29:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:29:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:29:15,401 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:29:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,402 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 3 times [2020-04-18 15:29:15,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:15,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112170683] [2020-04-18 15:29:15,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:15,460 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 15:29:15,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112170683] [2020-04-18 15:29:15,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:15,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:15,464 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:15,464 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:29:15,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:15,477 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:15,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:29:15,478 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 15:29:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,488 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:29:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:29:15,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:15,489 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1909635149] [2020-04-18 15:29:15,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:15,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:29:15,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1909635149] [2020-04-18 15:29:15,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:29:15,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:29:15,491 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 15:29:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,513 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 15:29:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:29:15,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:29:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:15,517 INFO L225 Difference]: With dead ends: 278 [2020-04-18 15:29:15,517 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 15:29:15,518 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 15:29:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 15:29:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 15:29:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 15:29:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 15:29:15,534 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 15:29:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:15,534 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 15:29:15,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:29:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 15:29:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:29:15,536 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:15,536 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:29:15,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-18 15:29:15,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:15,537 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1574017676] [2020-04-18 15:29:15,538 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,538 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:29:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:29:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:29:15,539 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1603400938, now seen corresponding path program 2 times [2020-04-18 15:29:15,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:15,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024406322] [2020-04-18 15:29:15,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:15,610 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 15:29:15,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024406322] [2020-04-18 15:29:15,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:15,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:15,611 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:15,613 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,615 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:29:15,615 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:15,617 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:29:15,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:15,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:15,618 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 15:29:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,625 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:29:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:29:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:29:15,626 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:29:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 3 times [2020-04-18 15:29:15,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:15,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953290812] [2020-04-18 15:29:15,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:15,712 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 15:29:15,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953290812] [2020-04-18 15:29:15,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:15,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:29:15,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:15,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,716 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:29:15,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:15,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:29:15,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:29:15,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:29:15,772 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 5 states. [2020-04-18 15:29:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,793 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-04-18 15:29:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-04-18 15:29:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:29:15,794 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:29:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1603391338, now seen corresponding path program 4 times [2020-04-18 15:29:15,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:15,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603934020] [2020-04-18 15:29:15,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:15,850 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 15:29:15,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603934020] [2020-04-18 15:29:15,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:15,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:29:15,851 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:15,852 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,853 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:29:15,854 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:15,863 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:15,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:15,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:29:15,864 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-04-18 15:29:15,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,885 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-04-18 15:29:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-04-18 15:29:15,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:15,886 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1574017676] [2020-04-18 15:29:15,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:15,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:29:15,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1574017676] [2020-04-18 15:29:15,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:29:15,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:15,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:29:15,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:29:15,888 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 7 states. [2020-04-18 15:29:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:15,958 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 15:29:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:29:15,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 15:29:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:15,962 INFO L225 Difference]: With dead ends: 218 [2020-04-18 15:29:15,962 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:29:15,964 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:29:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:29:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:29:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:29:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 15:29:15,985 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 15:29:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:15,986 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 15:29:15,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:29:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 15:29:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:29:15,987 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:15,987 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:29:15,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 15:29:15,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:15,988 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [505931922] [2020-04-18 15:29:15,989 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:15,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:29:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:29:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:29:15,991 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:15,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1834241260, now seen corresponding path program 2 times [2020-04-18 15:29:15,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:15,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335353901] [2020-04-18 15:29:15,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,018 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 15:29:16,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335353901] [2020-04-18 15:29:16,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:16,019 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,020 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,022 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:29:16,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:29:16,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:16,026 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:29:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,029 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:29:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:29:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:29:16,030 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:29:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 3 times [2020-04-18 15:29:16,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920826403] [2020-04-18 15:29:16,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,077 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 15:29:16,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920826403] [2020-04-18 15:29:16,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:16,078 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,081 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:29:16,082 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,109 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:29:16,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:16,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:29:16,110 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 15:29:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,123 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:29:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:29:16,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:16,124 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [505931922] [2020-04-18 15:29:16,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:16,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:29:16,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [505931922] [2020-04-18 15:29:16,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:29:16,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:29:16,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:29:16,128 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 5 states. [2020-04-18 15:29:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,223 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-04-18 15:29:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:29:16,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:29:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:16,225 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:29:16,225 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:29:16,226 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:29:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:29:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:29:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:29:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-04-18 15:29:16,237 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-04-18 15:29:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:16,237 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-04-18 15:29:16,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:29:16,237 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-04-18 15:29:16,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:29:16,241 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:16,241 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:29:16,241 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-18 15:29:16,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:16,242 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [756354432] [2020-04-18 15:29:16,243 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,244 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 15:29:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 15:29:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:29:16,248 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1026920870, now seen corresponding path program 2 times [2020-04-18 15:29:16,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219041718] [2020-04-18 15:29:16,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,292 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 15:29:16,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219041718] [2020-04-18 15:29:16,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:16,293 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,295 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,297 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:29:16,298 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,308 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:16,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:16,309 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-04-18 15:29:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,313 INFO L93 Difference]: Finished difference Result 40 states and 67 transitions. [2020-04-18 15:29:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-04-18 15:29:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:29:16,314 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:29:16,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1026922250, now seen corresponding path program 3 times [2020-04-18 15:29:16,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063263998] [2020-04-18 15:29:16,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,395 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 15:29:16,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063263998] [2020-04-18 15:29:16,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:16,397 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,398 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:29:16,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,417 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:16,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:29:16,418 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-04-18 15:29:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,439 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 15:29:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 15:29:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:29:16,440 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:29:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 4 times [2020-04-18 15:29:16,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-18 15:29:16,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,521 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 15:29:16,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-18 15:29:16,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:29:16,522 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,523 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,525 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:29:16,525 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,558 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:29:16,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:29:16,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:29:16,558 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand 6 states. [2020-04-18 15:29:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,582 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 15:29:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 15:29:16,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:16,582 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [756354432] [2020-04-18 15:29:16,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:16,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:29:16,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [756354432] [2020-04-18 15:29:16,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:29:16,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:29:16,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:29:16,585 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 7 states. [2020-04-18 15:29:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,711 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:29:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:29:16,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:29:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:16,713 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:29:16,713 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:29:16,713 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:29:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:29:16,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:29:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:29:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:29:16,727 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-04-18 15:29:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:16,727 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:29:16,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:29:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:29:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:29:16,728 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:16,728 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:29:16,728 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-18 15:29:16,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:16,732 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2120391834] [2020-04-18 15:29:16,733 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,736 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:29:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:29:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:29:16,738 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,738 INFO L82 PathProgramCache]: Analyzing trace with hash 971527177, now seen corresponding path program 2 times [2020-04-18 15:29:16,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302697604] [2020-04-18 15:29:16,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,783 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 15:29:16,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302697604] [2020-04-18 15:29:16,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:16,785 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,786 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,790 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 15:29:16,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,795 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:16,796 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:29:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,800 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:29:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:29:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:29:16,801 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:29:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,802 INFO L82 PathProgramCache]: Analyzing trace with hash 970144267, now seen corresponding path program 3 times [2020-04-18 15:29:16,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410017899] [2020-04-18 15:29:16,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,845 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 15:29:16,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410017899] [2020-04-18 15:29:16,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:29:16,846 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,847 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,851 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:29:16,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,862 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:16,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:29:16,864 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 4 states. [2020-04-18 15:29:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:16,888 INFO L93 Difference]: Finished difference Result 89 states and 160 transitions. [2020-04-18 15:29:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 160 transitions. [2020-04-18 15:29:16,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:29:16,889 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:29:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1873050359, now seen corresponding path program 4 times [2020-04-18 15:29:16,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:16,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010264105] [2020-04-18 15:29:16,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:16,937 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 15:29:16,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010264105] [2020-04-18 15:29:16,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:16,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:29:16,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:16,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:16,945 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 15:29:16,945 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:16,971 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:29:16,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:29:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:29:16,972 INFO L87 Difference]: Start difference. First operand 89 states and 160 transitions. Second operand 6 states. [2020-04-18 15:29:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,017 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 15:29:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 15:29:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:29:17,018 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:29:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 5 times [2020-04-18 15:29:17,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070125556] [2020-04-18 15:29:17,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,080 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 15:29:17,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070125556] [2020-04-18 15:29:17,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:29:17,081 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,082 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,085 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:29:17,085 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:17,117 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:29:17,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:29:17,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:29:17,118 INFO L87 Difference]: Start difference. First operand 91 states and 161 transitions. Second operand 7 states. [2020-04-18 15:29:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,167 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 15:29:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 15:29:17,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:17,168 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2120391834] [2020-04-18 15:29:17,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:17,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:29:17,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2120391834] [2020-04-18 15:29:17,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:29:17,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:17,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:29:17,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:29:17,170 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 8 states. [2020-04-18 15:29:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,264 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-04-18 15:29:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:29:17,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 15:29:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:17,266 INFO L225 Difference]: With dead ends: 92 [2020-04-18 15:29:17,266 INFO L226 Difference]: Without dead ends: 84 [2020-04-18 15:29:17,266 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:29:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-18 15:29:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-04-18 15:29:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-18 15:29:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-04-18 15:29:17,270 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-04-18 15:29:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:17,270 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-04-18 15:29:17,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:29:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-04-18 15:29:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,271 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:29:17,271 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 15:29:17,271 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:29:17,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 15:29:17,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:29:17,273 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [473030153] [2020-04-18 15:29:17,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:29:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:29:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,283 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:29:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 15:29:17,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745869270] [2020-04-18 15:29:17,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,335 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 15:29:17,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745869270] [2020-04-18 15:29:17,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:17,336 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,337 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,344 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 95 transitions. [2020-04-18 15:29:17,345 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:17,350 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:29:17,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:29:17,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:29:17,351 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:29:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,357 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 15:29:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 15:29:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,359 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:29:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,359 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 15:29:17,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386653831] [2020-04-18 15:29:17,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,390 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 15:29:17,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386653831] [2020-04-18 15:29:17,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:29:17,391 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,392 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,399 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 113 transitions. [2020-04-18 15:29:17,400 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:17,447 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:29:17,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:29:17,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:29:17,448 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 6 states. [2020-04-18 15:29:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,489 INFO L93 Difference]: Finished difference Result 448 states and 1122 transitions. [2020-04-18 15:29:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1122 transitions. [2020-04-18 15:29:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,491 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:29:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,492 INFO L82 PathProgramCache]: Analyzing trace with hash 219088266, now seen corresponding path program 4 times [2020-04-18 15:29:17,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424254816] [2020-04-18 15:29:17,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,521 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 15:29:17,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424254816] [2020-04-18 15:29:17,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:29:17,522 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,523 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 83 transitions. [2020-04-18 15:29:17,529 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:17,603 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 15:29:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:29:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:29:17,604 INFO L87 Difference]: Start difference. First operand 448 states and 1122 transitions. Second operand 6 states. [2020-04-18 15:29:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,633 INFO L93 Difference]: Finished difference Result 670 states and 1595 transitions. [2020-04-18 15:29:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1595 transitions. [2020-04-18 15:29:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,635 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:29:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 273605796, now seen corresponding path program 5 times [2020-04-18 15:29:17,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951946385] [2020-04-18 15:29:17,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,670 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 15:29:17,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951946385] [2020-04-18 15:29:17,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:29:17,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,672 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,678 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-04-18 15:29:17,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:17,707 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:29:17,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:17,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:29:17,708 INFO L87 Difference]: Start difference. First operand 670 states and 1595 transitions. Second operand 4 states. [2020-04-18 15:29:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,746 INFO L93 Difference]: Finished difference Result 928 states and 2059 transitions. [2020-04-18 15:29:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2059 transitions. [2020-04-18 15:29:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,749 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:29:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash -287452954, now seen corresponding path program 6 times [2020-04-18 15:29:17,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592372772] [2020-04-18 15:29:17,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,786 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 15:29:17,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592372772] [2020-04-18 15:29:17,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:29:17,787 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,788 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,793 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 81 transitions. [2020-04-18 15:29:17,793 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:17,840 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:29:17,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:29:17,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:29:17,841 INFO L87 Difference]: Start difference. First operand 928 states and 2059 transitions. Second operand 6 states. [2020-04-18 15:29:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:17,930 INFO L93 Difference]: Finished difference Result 998 states and 2142 transitions. [2020-04-18 15:29:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2142 transitions. [2020-04-18 15:29:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:17,934 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:29:17,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:17,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1691795752, now seen corresponding path program 7 times [2020-04-18 15:29:17,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:17,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440675476] [2020-04-18 15:29:17,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:17,984 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 15:29:17,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440675476] [2020-04-18 15:29:17,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:17,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:29:17,985 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:17,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:17,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 15:29:17,990 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:18,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:29:18,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:29:18,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:29:18,038 INFO L87 Difference]: Start difference. First operand 998 states and 2142 transitions. Second operand 7 states. [2020-04-18 15:29:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:18,165 INFO L93 Difference]: Finished difference Result 1006 states and 2146 transitions. [2020-04-18 15:29:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 2146 transitions. [2020-04-18 15:29:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:18,169 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:29:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:18,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 8 times [2020-04-18 15:29:18,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:18,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280258862] [2020-04-18 15:29:18,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:18,210 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 15:29:18,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280258862] [2020-04-18 15:29:18,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:18,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:29:18,211 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:18,213 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:18,217 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-04-18 15:29:18,217 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:18,311 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:29:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:29:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:29:18,312 INFO L87 Difference]: Start difference. First operand 1006 states and 2146 transitions. Second operand 5 states. [2020-04-18 15:29:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:18,376 INFO L93 Difference]: Finished difference Result 1412 states and 2920 transitions. [2020-04-18 15:29:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2920 transitions. [2020-04-18 15:29:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:29:18,382 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 15:29:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:29:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 9 times [2020-04-18 15:29:18,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:29:18,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352374697] [2020-04-18 15:29:18,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:29:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:29:18,416 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 15:29:18,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352374697] [2020-04-18 15:29:18,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:29:18,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:29:18,418 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:29:18,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:29:18,424 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 21 transitions. [2020-04-18 15:29:18,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:29:18,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:29:18,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:29:18,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:29:18,501 INFO L87 Difference]: Start difference. First operand 1412 states and 2920 transitions. Second operand 4 states. [2020-04-18 15:29:18,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:18,535 INFO L93 Difference]: Finished difference Result 2075 states and 4253 transitions. [2020-04-18 15:29:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 4253 transitions. [2020-04-18 15:29:18,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:18,541 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [473030153] [2020-04-18 15:29:18,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:29:18,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:29:18,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [473030153] [2020-04-18 15:29:18,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 15:29:18,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:29:18,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 15:29:18,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-04-18 15:29:18,543 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 20 states. [2020-04-18 15:29:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:29:19,837 INFO L93 Difference]: Finished difference Result 152 states and 299 transitions. [2020-04-18 15:29:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 15:29:19,838 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-04-18 15:29:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:29:19,838 INFO L225 Difference]: With dead ends: 152 [2020-04-18 15:29:19,838 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:29:19,841 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=813, Invalid=4157, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 15:29:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:29:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:29:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:29:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:29:19,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:29:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:29:19,842 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:29:19,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 15:29:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:29:19,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:29:19,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:29:19 BasicIcfg [2020-04-18 15:29:19,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:29:19,848 INFO L168 Benchmark]: Toolchain (without parser) took 8259.41 ms. Allocated memory was 135.8 MB in the beginning and 334.5 MB in the end (delta: 198.7 MB). Free memory was 97.8 MB in the beginning and 301.5 MB in the end (delta: -203.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:29:19,849 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 117.7 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:29:19,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.53 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 95.8 MB in the beginning and 157.8 MB in the end (delta: -62.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:29:19,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.12 ms. Allocated memory is still 200.8 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:29:19,850 INFO L168 Benchmark]: Boogie Preprocessor took 36.54 ms. Allocated memory is still 200.8 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:29:19,851 INFO L168 Benchmark]: RCFGBuilder took 432.59 ms. Allocated memory is still 200.8 MB. Free memory was 154.3 MB in the beginning and 132.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:29:19,851 INFO L168 Benchmark]: TraceAbstraction took 7059.27 ms. Allocated memory was 200.8 MB in the beginning and 334.5 MB in the end (delta: 133.7 MB). Free memory was 131.6 MB in the beginning and 301.5 MB in the end (delta: -169.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:29:19,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 117.7 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.53 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 95.8 MB in the beginning and 157.8 MB in the end (delta: -62.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.12 ms. Allocated memory is still 200.8 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.54 ms. Allocated memory is still 200.8 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.59 ms. Allocated memory is still 200.8 MB. Free memory was 154.3 MB in the beginning and 132.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7059.27 ms. Allocated memory was 200.8 MB in the beginning and 334.5 MB in the end (delta: 133.7 MB). Free memory was 131.6 MB in the beginning and 301.5 MB in the end (delta: -169.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 148 SDtfs, 327 SDslu, 537 SDs, 0 SdLazy, 612 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 456 GetRequests, 342 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 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...