/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:43:42,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:43:42,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:43:42,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:43:42,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:43:42,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:43:42,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:43:42,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:43:42,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:43:42,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:43:42,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:43:42,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:43:42,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:43:42,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:43:42,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:43:42,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:43:42,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:43:42,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:43:42,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:43:42,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:43:42,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:43:42,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:43:42,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:43:42,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:43:42,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:43:42,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:43:42,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:43:42,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:43:42,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:43:42,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:43:42,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:43:42,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:43:42,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:43:42,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:43:42,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:43:42,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:43:42,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:43:42,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:43:42,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:43:42,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:43:42,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:43:42,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:43:42,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:43:42,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:43:42,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:43:42,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:43:42,501 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:43:42,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:43:42,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:43:42,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:43:42,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:43:42,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:43:42,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:43:42,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:43:42,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:43:42,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:43:42,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:43:42,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:43:42,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:43:42,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:43:42,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:43:42,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:43:42,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:43:42,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:43:42,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:43:42,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:43:42,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:43:42,506 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:43:42,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:43:42,506 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:43:42,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:43:42,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:43:42,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:43:42,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:43:42,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:43:42,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:43:42,775 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:43:42,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2020-04-18 10:43:42,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4a54163/8930c4c667914147a886ef6976f3c5cb/FLAG5b72a7325 [2020-04-18 10:43:43,412 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:43:43,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2020-04-18 10:43:43,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4a54163/8930c4c667914147a886ef6976f3c5cb/FLAG5b72a7325 [2020-04-18 10:43:43,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4a54163/8930c4c667914147a886ef6976f3c5cb [2020-04-18 10:43:43,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:43:43,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:43:43,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:43:43,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:43:43,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:43:43,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:43:43" (1/1) ... [2020-04-18 10:43:43,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:43, skipping insertion in model container [2020-04-18 10:43:43,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:43:43" (1/1) ... [2020-04-18 10:43:43,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:43:43,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:43:44,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:43:44,268 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:43:44,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:43:44,399 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:43:44,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44 WrapperNode [2020-04-18 10:43:44,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:43:44,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:43:44,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:43:44,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:43:44,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:43:44,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:43:44,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:43:44,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:43:44,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (1/1) ... [2020-04-18 10:43:44,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:43:44,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:43:44,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:43:44,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:43:44,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (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 10:43:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:43:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:43:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:43:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:43:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:43:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:43:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:43:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:43:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:43:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:43:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:43:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:43:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:43:44,538 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 10:43:44,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:43:44,916 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:43:44,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:43:44 BoogieIcfgContainer [2020-04-18 10:43:44,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:43:44,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:43:44,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:43:44,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:43:44,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:43:43" (1/3) ... [2020-04-18 10:43:44,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300b517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:43:44, skipping insertion in model container [2020-04-18 10:43:44,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:43:44" (2/3) ... [2020-04-18 10:43:44,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300b517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:43:44, skipping insertion in model container [2020-04-18 10:43:44,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:43:44" (3/3) ... [2020-04-18 10:43:44,929 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_pso.opt.i [2020-04-18 10:43:44,939 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:43:44,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:43:44,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:43:44,949 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:43:44,975 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,975 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,976 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,976 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,978 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,980 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,980 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,981 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,981 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,981 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,982 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,982 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,982 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,982 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,983 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,986 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,991 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,992 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,992 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,992 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,999 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,999 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:44,999 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:45,000 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:45,002 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:45,003 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:45,003 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:45,003 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:43:45,020 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:43:45,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:43:45,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:43:45,041 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:43:45,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:43:45,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:43:45,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:43:45,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:43:45,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:43:45,058 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 10:43:45,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 10:43:45,103 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 10:43:45,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:43:45,109 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:43:45,115 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 10:43:45,137 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 10:43:45,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:43:45,138 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:43:45,140 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:43:45,141 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:43:46,683 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 10:43:46,806 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 10:43:46,807 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 10:43:46,811 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 10:43:46,846 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 10:43:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 10:43:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:43:46,858 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:43:46,859 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:43:46,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:43:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 10:43:46,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:43:46,878 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [159070288] [2020-04-18 10:43:46,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:46,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:43:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:43:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:43:46,920 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:43:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:46,921 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 2 times [2020-04-18 10:43:46,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:46,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735956740] [2020-04-18 10:43:46,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:47,194 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 10:43:47,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735956740] [2020-04-18 10:43:47,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:47,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:43:47,199 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:47,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,206 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:43:47,206 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:47,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:43:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:43:47,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:43:47,217 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 10:43:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:47,221 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:43:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:43:47,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:47,222 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [159070288] [2020-04-18 10:43:47,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:43:47,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:43:47,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [159070288] [2020-04-18 10:43:47,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 10:43:47,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:43:47,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:43:47,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:43:47,231 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 10:43:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:47,260 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 10:43:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 10:43:47,261 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 10:43:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:43:47,278 INFO L225 Difference]: With dead ends: 362 [2020-04-18 10:43:47,278 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 10:43:47,280 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:43:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 10:43:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 10:43:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 10:43:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 10:43:47,355 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 10:43:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:43:47,357 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 10:43:47,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 10:43:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 10:43:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:43:47,358 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:43:47,359 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:43:47,359 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:43:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:47,359 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 10:43:47,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:43:47,360 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [686145245] [2020-04-18 10:43:47,360 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,361 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:43:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 10:43:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:43:47,362 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:43:47,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 2 times [2020-04-18 10:43:47,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:47,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422712562] [2020-04-18 10:43:47,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:47,482 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 10:43:47,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422712562] [2020-04-18 10:43:47,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:47,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:43:47,483 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:47,486 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,487 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:43:47,487 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:47,499 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:43:47,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:43:47,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:43:47,500 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 10:43:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:47,514 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 10:43:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 10:43:47,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:47,515 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [686145245] [2020-04-18 10:43:47,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:43:47,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:43:47,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [686145245] [2020-04-18 10:43:47,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:43:47,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:43:47,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:43:47,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:43:47,519 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 10:43:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:47,546 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 10:43:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:43:47,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:43:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:43:47,552 INFO L225 Difference]: With dead ends: 330 [2020-04-18 10:43:47,552 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 10:43:47,556 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 10:43:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 10:43:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 10:43:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 10:43:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 10:43:47,584 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 10:43:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:43:47,584 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 10:43:47,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:43:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 10:43:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:43:47,588 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:43:47,588 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:43:47,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:43:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:47,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-18 10:43:47,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:43:47,590 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [232503520] [2020-04-18 10:43:47,590 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 10:43:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 10:43:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:43:47,592 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:43:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 2 times [2020-04-18 10:43:47,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:47,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692195074] [2020-04-18 10:43:47,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:47,691 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 10:43:47,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692195074] [2020-04-18 10:43:47,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:47,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:43:47,693 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:47,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,695 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 10:43:47,695 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:47,731 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:43:47,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:43:47,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:43:47,732 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 7 states. [2020-04-18 10:43:47,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:47,761 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2020-04-18 10:43:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-04-18 10:43:47,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:47,762 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [232503520] [2020-04-18 10:43:47,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:43:47,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:43:47,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [232503520] [2020-04-18 10:43:47,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:43:47,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:43:47,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:43:47,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:43:47,764 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 7 states. [2020-04-18 10:43:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:47,888 INFO L93 Difference]: Finished difference Result 326 states and 882 transitions. [2020-04-18 10:43:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 10:43:47,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 10:43:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:43:47,890 INFO L225 Difference]: With dead ends: 326 [2020-04-18 10:43:47,890 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 10:43:47,891 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:43:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 10:43:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 10:43:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 10:43:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-04-18 10:43:47,904 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 10 [2020-04-18 10:43:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:43:47,904 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-04-18 10:43:47,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:43:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-04-18 10:43:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:43:47,911 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:43:47,911 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:43:47,911 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:43:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 1 times [2020-04-18 10:43:47,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:43:47,915 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1589136671] [2020-04-18 10:43:47,916 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 84 transitions. [2020-04-18 10:43:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 10:43:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:43:47,918 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:43:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:47,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 2 times [2020-04-18 10:43:47,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:47,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231140765] [2020-04-18 10:43:47,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:47,980 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 10:43:47,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231140765] [2020-04-18 10:43:47,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:47,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:43:47,982 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:47,983 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:47,985 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-04-18 10:43:47,986 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:48,017 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:43:48,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:43:48,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:43:48,018 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-04-18 10:43:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,025 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-04-18 10:43:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 84 transitions. [2020-04-18 10:43:48,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:48,026 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1589136671] [2020-04-18 10:43:48,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:43:48,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:43:48,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1589136671] [2020-04-18 10:43:48,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:43:48,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:43:48,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:43:48,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:43:48,028 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 4 states. [2020-04-18 10:43:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,041 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2020-04-18 10:43:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:43:48,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 10:43:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:43:48,043 INFO L225 Difference]: With dead ends: 170 [2020-04-18 10:43:48,043 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:43:48,043 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:43:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:43:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:43:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:43:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-04-18 10:43:48,052 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-04-18 10:43:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:43:48,052 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-04-18 10:43:48,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:43:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-04-18 10:43:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:43:48,054 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:43:48,054 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:43:48,054 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:43:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,054 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-04-18 10:43:48,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:43:48,055 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1630872222] [2020-04-18 10:43:48,055 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 154 transitions. [2020-04-18 10:43:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 10:43:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:43:48,059 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:43:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2107764112, now seen corresponding path program 2 times [2020-04-18 10:43:48,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:48,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058291230] [2020-04-18 10:43:48,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:48,133 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 10:43:48,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058291230] [2020-04-18 10:43:48,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:48,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:43:48,135 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:48,138 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,144 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 74 transitions. [2020-04-18 10:43:48,145 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:48,162 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:43:48,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:43:48,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:43:48,163 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 5 states. [2020-04-18 10:43:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,213 INFO L93 Difference]: Finished difference Result 80 states and 169 transitions. [2020-04-18 10:43:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 169 transitions. [2020-04-18 10:43:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:43:48,214 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:43:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash 711924244, now seen corresponding path program 3 times [2020-04-18 10:43:48,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:48,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434302148] [2020-04-18 10:43:48,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:48,262 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 10:43:48,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434302148] [2020-04-18 10:43:48,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:48,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:43:48,263 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:48,264 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,268 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 10:43:48,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:48,286 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:43:48,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:43:48,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:43:48,286 INFO L87 Difference]: Start difference. First operand 80 states and 169 transitions. Second operand 5 states. [2020-04-18 10:43:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,306 INFO L93 Difference]: Finished difference Result 80 states and 169 transitions. [2020-04-18 10:43:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 169 transitions. [2020-04-18 10:43:48,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:48,307 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1630872222] [2020-04-18 10:43:48,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:43:48,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:43:48,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1630872222] [2020-04-18 10:43:48,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:43:48,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:43:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:43:48,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:43:48,309 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 7 states. [2020-04-18 10:43:48,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,384 INFO L93 Difference]: Finished difference Result 176 states and 423 transitions. [2020-04-18 10:43:48,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 10:43:48,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 10:43:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:43:48,386 INFO L225 Difference]: With dead ends: 176 [2020-04-18 10:43:48,386 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 10:43:48,386 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-04-18 10:43:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 10:43:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-18 10:43:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-18 10:43:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-18 10:43:48,391 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-18 10:43:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:43:48,392 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-18 10:43:48,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:43:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-18 10:43:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:43:48,393 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:43:48,393 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:43:48,393 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:43:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash -647415272, now seen corresponding path program 1 times [2020-04-18 10:43:48,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:43:48,394 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1466696884] [2020-04-18 10:43:48,395 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,396 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 240 transitions. [2020-04-18 10:43:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 10:43:48,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:43:48,398 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:43:48,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,398 INFO L82 PathProgramCache]: Analyzing trace with hash 914224618, now seen corresponding path program 2 times [2020-04-18 10:43:48,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:48,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530186664] [2020-04-18 10:43:48,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:48,470 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 10:43:48,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530186664] [2020-04-18 10:43:48,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:48,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:43:48,472 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:48,473 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,480 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 97 transitions. [2020-04-18 10:43:48,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:48,516 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 10:43:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:43:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:43:48,517 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 7 states. [2020-04-18 10:43:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,579 INFO L93 Difference]: Finished difference Result 122 states and 282 transitions. [2020-04-18 10:43:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 282 transitions. [2020-04-18 10:43:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:43:48,580 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:43:48,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,580 INFO L82 PathProgramCache]: Analyzing trace with hash 592861670, now seen corresponding path program 3 times [2020-04-18 10:43:48,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:48,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850308520] [2020-04-18 10:43:48,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:48,631 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 10:43:48,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850308520] [2020-04-18 10:43:48,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:48,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:43:48,633 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:48,634 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,637 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-04-18 10:43:48,638 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:48,654 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:43:48,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:43:48,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:43:48,655 INFO L87 Difference]: Start difference. First operand 122 states and 282 transitions. Second operand 5 states. [2020-04-18 10:43:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:48,694 INFO L93 Difference]: Finished difference Result 143 states and 309 transitions. [2020-04-18 10:43:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 309 transitions. [2020-04-18 10:43:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:43:48,695 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:43:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:43:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash 567837230, now seen corresponding path program 4 times [2020-04-18 10:43:48,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:43:48,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168119414] [2020-04-18 10:43:48,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:43:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:43:48,758 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 10:43:48,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168119414] [2020-04-18 10:43:48,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:43:48,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:43:48,759 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:43:48,760 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:43:48,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-04-18 10:43:48,764 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:43:48,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 10:43:49,044 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 10:43:49,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:43:49,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:43:49,045 INFO L87 Difference]: Start difference. First operand 143 states and 309 transitions. Second operand 9 states. [2020-04-18 10:43:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:49,083 INFO L93 Difference]: Finished difference Result 143 states and 309 transitions. [2020-04-18 10:43:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 309 transitions. [2020-04-18 10:43:49,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:49,084 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1466696884] [2020-04-18 10:43:49,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:43:49,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:43:49,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1466696884] [2020-04-18 10:43:49,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 10:43:49,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:43:49,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 10:43:49,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:43:49,086 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 15 states. [2020-04-18 10:43:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:43:49,394 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-04-18 10:43:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:43:49,394 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-04-18 10:43:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:43:49,395 INFO L225 Difference]: With dead ends: 86 [2020-04-18 10:43:49,395 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:43:49,396 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 10:43:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:43:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:43:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:43:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:43:49,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 10:43:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:43:49,397 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:43:49,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 10:43:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:43:49,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:43:49,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:43:49 BasicIcfg [2020-04-18 10:43:49,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:43:49,404 INFO L168 Benchmark]: Toolchain (without parser) took 5667.20 ms. Allocated memory was 138.4 MB in the beginning and 287.8 MB in the end (delta: 149.4 MB). Free memory was 101.6 MB in the beginning and 182.7 MB in the end (delta: -81.2 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:43:49,405 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 138.4 MB. Free memory is still 121.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:43:49,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.62 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 159.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-04-18 10:43:49,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.44 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:43:49,407 INFO L168 Benchmark]: Boogie Preprocessor took 25.94 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:43:49,408 INFO L168 Benchmark]: RCFGBuilder took 442.87 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 133.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:43:49,409 INFO L168 Benchmark]: TraceAbstraction took 4480.87 ms. Allocated memory was 202.9 MB in the beginning and 287.8 MB in the end (delta: 84.9 MB). Free memory was 133.1 MB in the beginning and 182.7 MB in the end (delta: -49.6 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:43:49,413 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 138.4 MB. Free memory is still 121.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.62 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 159.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.44 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.94 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.87 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 133.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4480.87 ms. Allocated memory was 202.9 MB in the beginning and 287.8 MB in the end (delta: 84.9 MB). Free memory was 133.1 MB in the beginning and 182.7 MB in the end (delta: -49.6 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 118 SDtfs, 319 SDslu, 289 SDs, 0 SdLazy, 207 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 6 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...