/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:10:17,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:10:17,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:10:18,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:10:18,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:10:18,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:10:18,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:10:18,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:10:18,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:10:18,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:10:18,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:10:18,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:10:18,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:10:18,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:10:18,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:10:18,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:10:18,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:10:18,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:10:18,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:10:18,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:10:18,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:10:18,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:10:18,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:10:18,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:10:18,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:10:18,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:10:18,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:10:18,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:10:18,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:10:18,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:10:18,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:10:18,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:10:18,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:10:18,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:10:18,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:10:18,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:10:18,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:10:18,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:10:18,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:10:18,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:10:18,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:10:18,048 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-NoLbe-McrStrategy.epf [2020-04-18 19:10:18,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:10:18,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:10:18,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:10:18,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:10:18,066 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:10:18,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:10:18,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:10:18,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:10:18,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:10:18,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:10:18,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:10:18,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:10:18,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:10:18,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:10:18,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:10:18,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:10:18,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:10:18,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:10:18,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:10:18,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:10:18,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:10:18,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:10:18,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:10:18,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:10:18,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:10:18,070 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:10:18,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:10:18,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:10:18,070 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:10:18,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:10:18,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:10:18,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:10:18,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:10:18,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:10:18,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:10:18,363 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:10:18,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-04-18 19:10:18,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac799ee23/6c76773fe16a4498a9bfe96d80d48572/FLAGad6e3290f [2020-04-18 19:10:18,967 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:10:18,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-04-18 19:10:18,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac799ee23/6c76773fe16a4498a9bfe96d80d48572/FLAGad6e3290f [2020-04-18 19:10:19,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac799ee23/6c76773fe16a4498a9bfe96d80d48572 [2020-04-18 19:10:19,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:10:19,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:10:19,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:10:19,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:10:19,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:10:19,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:10:19" (1/1) ... [2020-04-18 19:10:19,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783bcbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:19, skipping insertion in model container [2020-04-18 19:10:19,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:10:19" (1/1) ... [2020-04-18 19:10:19,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:10:19,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:10:19,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:10:19,860 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:10:19,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:10:20,011 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:10:20,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20 WrapperNode [2020-04-18 19:10:20,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:10:20,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:10:20,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:10:20,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:10:20,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:10:20,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:10:20,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:10:20,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:10:20,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (1/1) ... [2020-04-18 19:10:20,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:10:20,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:10:20,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:10:20,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:10:20,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (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 19:10:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:10:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:10:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:10:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:10:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:10:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:10:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:10:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:10:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:10:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:10:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:10:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:10:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:10:20,168 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 19:10:20,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:10:20,527 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:10:20,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:10:20 BoogieIcfgContainer [2020-04-18 19:10:20,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:10:20,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:10:20,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:10:20,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:10:20,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:10:19" (1/3) ... [2020-04-18 19:10:20,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70598b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:10:20, skipping insertion in model container [2020-04-18 19:10:20,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:10:20" (2/3) ... [2020-04-18 19:10:20,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70598b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:10:20, skipping insertion in model container [2020-04-18 19:10:20,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:10:20" (3/3) ... [2020-04-18 19:10:20,542 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-04-18 19:10:20,551 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:10:20,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:10:20,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:10:20,558 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:10:20,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,586 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,586 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,589 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,592 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,592 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,593 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,593 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,594 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,594 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,594 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,594 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,598 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,599 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,599 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,599 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,599 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,600 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,604 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,605 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,611 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,612 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,612 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,612 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,628 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,628 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,628 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,629 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:10:20,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:10:20,668 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:10:20,668 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:10:20,668 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:10:20,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:10:20,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:10:20,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:10:20,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:10:20,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:10:20,689 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:10:21,185 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:10:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:10:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:10:21,221 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:21,222 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:21,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:10:21,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:21,238 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [652335250] [2020-04-18 19:10:21,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:21,271 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:10:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:10:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:10:21,275 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:10:21,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:21,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189122987] [2020-04-18 19:10:21,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:21,786 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 19:10:21,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189122987] [2020-04-18 19:10:21,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:21,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:21,790 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:21,795 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:21,805 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:10:21,805 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:21,866 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:21,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:10:21,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:10:21,872 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:10:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:21,990 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:10:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:10:21,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:21,992 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [652335250] [2020-04-18 19:10:21,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:21,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:10:21,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [652335250] [2020-04-18 19:10:21,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:10:21,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:22,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:10:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:10:22,001 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:10:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:22,457 INFO L93 Difference]: Finished difference Result 20344 states and 70386 transitions. [2020-04-18 19:10:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:10:22,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:10:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:22,533 INFO L225 Difference]: With dead ends: 20344 [2020-04-18 19:10:22,533 INFO L226 Difference]: Without dead ends: 6604 [2020-04-18 19:10:22,535 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:10:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2020-04-18 19:10:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5470. [2020-04-18 19:10:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5470 states. [2020-04-18 19:10:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 18555 transitions. [2020-04-18 19:10:22,987 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 18555 transitions. Word has length 36 [2020-04-18 19:10:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:22,990 INFO L479 AbstractCegarLoop]: Abstraction has 5470 states and 18555 transitions. [2020-04-18 19:10:22,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:10:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 18555 transitions. [2020-04-18 19:10:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:23,015 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:23,023 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:23,023 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:23,025 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:10:23,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:23,026 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1768201900] [2020-04-18 19:10:23,028 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:23,035 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:10:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:10:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:23,042 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:23,042 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:10:23,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:23,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676633480] [2020-04-18 19:10:23,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:23,290 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 19:10:23,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676633480] [2020-04-18 19:10:23,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:23,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:23,291 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:23,295 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:23,310 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:10:23,310 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:23,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:23,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:23,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:23,371 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:10:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:23,438 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:10:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:10:23,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:23,440 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1768201900] [2020-04-18 19:10:23,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:23,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:23,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1768201900] [2020-04-18 19:10:23,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:10:23,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:23,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:23,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:10:23,443 INFO L87 Difference]: Start difference. First operand 5470 states and 18555 transitions. Second operand 7 states. [2020-04-18 19:10:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:23,850 INFO L93 Difference]: Finished difference Result 7572 states and 25260 transitions. [2020-04-18 19:10:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:10:23,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:10:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:23,898 INFO L225 Difference]: With dead ends: 7572 [2020-04-18 19:10:23,898 INFO L226 Difference]: Without dead ends: 6028 [2020-04-18 19:10:23,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:10:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2020-04-18 19:10:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 4884. [2020-04-18 19:10:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4884 states. [2020-04-18 19:10:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 16403 transitions. [2020-04-18 19:10:24,133 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 16403 transitions. Word has length 38 [2020-04-18 19:10:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:24,134 INFO L479 AbstractCegarLoop]: Abstraction has 4884 states and 16403 transitions. [2020-04-18 19:10:24,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:10:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 16403 transitions. [2020-04-18 19:10:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:24,146 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:24,146 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:24,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:24,147 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 1 times [2020-04-18 19:10:24,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:24,147 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1356927777] [2020-04-18 19:10:24,149 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:24,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:10:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:10:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:10:24,153 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash 628816319, now seen corresponding path program 2 times [2020-04-18 19:10:24,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:24,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688547811] [2020-04-18 19:10:24,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:24,357 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 19:10:24,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688547811] [2020-04-18 19:10:24,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:24,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:24,359 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:24,363 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:24,370 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:10:24,370 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:24,512 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:10:24,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:24,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:10:24,513 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 8 states. [2020-04-18 19:10:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:24,639 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:10:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:10:24,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:24,640 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1356927777] [2020-04-18 19:10:24,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:24,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:24,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1356927777] [2020-04-18 19:10:24,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:10:24,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:24,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:10:24,642 INFO L87 Difference]: Start difference. First operand 4884 states and 16403 transitions. Second operand 8 states. [2020-04-18 19:10:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:25,206 INFO L93 Difference]: Finished difference Result 7997 states and 26470 transitions. [2020-04-18 19:10:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:10:25,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-04-18 19:10:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:25,259 INFO L225 Difference]: With dead ends: 7997 [2020-04-18 19:10:25,259 INFO L226 Difference]: Without dead ends: 6017 [2020-04-18 19:10:25,260 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:10:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-04-18 19:10:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 4836. [2020-04-18 19:10:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4836 states. [2020-04-18 19:10:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 16175 transitions. [2020-04-18 19:10:25,447 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 16175 transitions. Word has length 38 [2020-04-18 19:10:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:25,447 INFO L479 AbstractCegarLoop]: Abstraction has 4836 states and 16175 transitions. [2020-04-18 19:10:25,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:10:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 16175 transitions. [2020-04-18 19:10:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:10:25,459 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:25,459 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:25,460 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 19:10:25,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:25,461 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1801002500] [2020-04-18 19:10:25,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:25,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:10:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:10:25,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:10:25,468 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:25,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1317030912, now seen corresponding path program 2 times [2020-04-18 19:10:25,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:25,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999200502] [2020-04-18 19:10:25,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:25,629 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 19:10:25,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999200502] [2020-04-18 19:10:25,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:25,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:25,631 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:25,636 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:25,650 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:10:25,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:25,808 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:10:25,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:10:25,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:10:25,808 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 10 states. [2020-04-18 19:10:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:25,887 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:10:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:10:25,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:25,888 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1801002500] [2020-04-18 19:10:25,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:25,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:10:25,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1801002500] [2020-04-18 19:10:25,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:10:25,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:25,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:10:25,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:10:25,890 INFO L87 Difference]: Start difference. First operand 4836 states and 16175 transitions. Second operand 10 states. [2020-04-18 19:10:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:26,141 INFO L93 Difference]: Finished difference Result 6638 states and 21843 transitions. [2020-04-18 19:10:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:10:26,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-04-18 19:10:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:26,160 INFO L225 Difference]: With dead ends: 6638 [2020-04-18 19:10:26,160 INFO L226 Difference]: Without dead ends: 4834 [2020-04-18 19:10:26,161 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:10:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2020-04-18 19:10:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 3537. [2020-04-18 19:10:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3537 states. [2020-04-18 19:10:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 11616 transitions. [2020-04-18 19:10:26,376 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 11616 transitions. Word has length 40 [2020-04-18 19:10:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:26,378 INFO L479 AbstractCegarLoop]: Abstraction has 3537 states and 11616 transitions. [2020-04-18 19:10:26,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:10:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 11616 transitions. [2020-04-18 19:10:26,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:26,387 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:26,387 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:26,388 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash -393434084, now seen corresponding path program 1 times [2020-04-18 19:10:26,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:26,389 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [771542843] [2020-04-18 19:10:26,391 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:26,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 188 states and 405 transitions. [2020-04-18 19:10:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-04-18 19:10:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:26,396 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:26,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1396861788, now seen corresponding path program 2 times [2020-04-18 19:10:26,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:26,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802095000] [2020-04-18 19:10:26,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:26,550 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 19:10:26,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802095000] [2020-04-18 19:10:26,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:26,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:26,551 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:26,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:26,566 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 165 transitions. [2020-04-18 19:10:26,566 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:26,661 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:10:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:10:26,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:10:26,662 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 8 states. [2020-04-18 19:10:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:26,966 INFO L93 Difference]: Finished difference Result 223 states and 448 transitions. [2020-04-18 19:10:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 448 transitions. [2020-04-18 19:10:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:10:26,967 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash -393434084, now seen corresponding path program 3 times [2020-04-18 19:10:26,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:26,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824123434] [2020-04-18 19:10:26,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:27,154 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 19:10:27,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824123434] [2020-04-18 19:10:27,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:27,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:27,156 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:27,160 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:27,175 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 237 transitions. [2020-04-18 19:10:27,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:27,592 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 32 times. [2020-04-18 19:10:27,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 19:10:27,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:10:27,593 INFO L87 Difference]: Start difference. First operand 223 states and 448 transitions. Second operand 21 states. [2020-04-18 19:10:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:27,834 INFO L93 Difference]: Finished difference Result 223 states and 448 transitions. [2020-04-18 19:10:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 448 transitions. [2020-04-18 19:10:27,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:27,835 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [771542843] [2020-04-18 19:10:27,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:27,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:27,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [771542843] [2020-04-18 19:10:27,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 19:10:27,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:27,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:10:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:10:27,837 INFO L87 Difference]: Start difference. First operand 3537 states and 11616 transitions. Second operand 23 states. [2020-04-18 19:10:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:28,201 INFO L93 Difference]: Finished difference Result 5161 states and 16970 transitions. [2020-04-18 19:10:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:10:28,205 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-04-18 19:10:28,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:28,221 INFO L225 Difference]: With dead ends: 5161 [2020-04-18 19:10:28,221 INFO L226 Difference]: Without dead ends: 2830 [2020-04-18 19:10:28,223 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=1345, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 19:10:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-04-18 19:10:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2578. [2020-04-18 19:10:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-04-18 19:10:28,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 8358 transitions. [2020-04-18 19:10:28,300 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 8358 transitions. Word has length 41 [2020-04-18 19:10:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:28,300 INFO L479 AbstractCegarLoop]: Abstraction has 2578 states and 8358 transitions. [2020-04-18 19:10:28,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 19:10:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 8358 transitions. [2020-04-18 19:10:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:28,307 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:28,307 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:28,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:28,308 INFO L82 PathProgramCache]: Analyzing trace with hash -296220260, now seen corresponding path program 1 times [2020-04-18 19:10:28,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:28,308 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1266670970] [2020-04-18 19:10:28,310 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:28,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 552 transitions. [2020-04-18 19:10:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-04-18 19:10:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:28,318 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:28,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1494075612, now seen corresponding path program 2 times [2020-04-18 19:10:28,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:28,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100811775] [2020-04-18 19:10:28,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:28,443 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 19:10:28,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100811775] [2020-04-18 19:10:28,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:28,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:28,444 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:28,447 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:28,461 INFO L259 McrAutomatonBuilder]: Finished intersection with 116 states and 206 transitions. [2020-04-18 19:10:28,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:28,534 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:10:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:28,535 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 7 states. [2020-04-18 19:10:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:28,750 INFO L93 Difference]: Finished difference Result 338 states and 740 transitions. [2020-04-18 19:10:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 740 transitions. [2020-04-18 19:10:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:10:28,752 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:28,753 INFO L82 PathProgramCache]: Analyzing trace with hash -296220260, now seen corresponding path program 3 times [2020-04-18 19:10:28,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:28,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151377265] [2020-04-18 19:10:28,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:28,864 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 19:10:28,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151377265] [2020-04-18 19:10:28,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:28,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:28,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:28,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:28,877 INFO L259 McrAutomatonBuilder]: Finished intersection with 112 states and 198 transitions. [2020-04-18 19:10:28,877 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:29,052 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:10:29,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:10:29,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:10:29,053 INFO L87 Difference]: Start difference. First operand 338 states and 740 transitions. Second operand 13 states. [2020-04-18 19:10:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:29,170 INFO L93 Difference]: Finished difference Result 338 states and 740 transitions. [2020-04-18 19:10:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 740 transitions. [2020-04-18 19:10:29,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:29,172 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1266670970] [2020-04-18 19:10:29,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:29,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:29,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1266670970] [2020-04-18 19:10:29,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:10:29,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:29,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:10:29,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:10:29,174 INFO L87 Difference]: Start difference. First operand 2578 states and 8358 transitions. Second operand 14 states. [2020-04-18 19:10:29,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:29,349 INFO L93 Difference]: Finished difference Result 3658 states and 11752 transitions. [2020-04-18 19:10:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:10:29,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-04-18 19:10:29,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:29,356 INFO L225 Difference]: With dead ends: 3658 [2020-04-18 19:10:29,356 INFO L226 Difference]: Without dead ends: 1600 [2020-04-18 19:10:29,356 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:10:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2020-04-18 19:10:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2020-04-18 19:10:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-04-18 19:10:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 4950 transitions. [2020-04-18 19:10:29,399 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 4950 transitions. Word has length 42 [2020-04-18 19:10:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:29,399 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 4950 transitions. [2020-04-18 19:10:29,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:10:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 4950 transitions. [2020-04-18 19:10:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:29,405 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:10:29,405 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:10:29,405 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:10:29,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:29,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1666156165, now seen corresponding path program 1 times [2020-04-18 19:10:29,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:10:29,406 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1878773320] [2020-04-18 19:10:29,436 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:29,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 928 states and 2844 transitions. [2020-04-18 19:10:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states. [2020-04-18 19:10:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:29,478 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:10:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1097895237, now seen corresponding path program 2 times [2020-04-18 19:10:29,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:29,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66045129] [2020-04-18 19:10:29,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:29,569 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 19:10:29,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66045129] [2020-04-18 19:10:29,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:29,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:10:29,570 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:29,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:29,611 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 530 transitions. [2020-04-18 19:10:29,611 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:29,677 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:10:29,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:29,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:10:29,678 INFO L87 Difference]: Start difference. First operand 928 states. Second operand 7 states. [2020-04-18 19:10:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:29,925 INFO L93 Difference]: Finished difference Result 1554 states and 4613 transitions. [2020-04-18 19:10:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 4613 transitions. [2020-04-18 19:10:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:29,929 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:10:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1666156165, now seen corresponding path program 3 times [2020-04-18 19:10:29,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:29,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696358173] [2020-04-18 19:10:29,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:30,021 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 19:10:30,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696358173] [2020-04-18 19:10:30,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:30,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:30,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:30,026 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:30,062 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 522 transitions. [2020-04-18 19:10:30,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:30,084 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:10:30,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:10:30,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:10:30,085 INFO L87 Difference]: Start difference. First operand 1554 states and 4613 transitions. Second operand 7 states. [2020-04-18 19:10:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:30,297 INFO L93 Difference]: Finished difference Result 1874 states and 5287 transitions. [2020-04-18 19:10:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5287 transitions. [2020-04-18 19:10:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:30,302 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:10:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 445351109, now seen corresponding path program 4 times [2020-04-18 19:10:30,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:30,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419210223] [2020-04-18 19:10:30,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:30,396 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 19:10:30,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419210223] [2020-04-18 19:10:30,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:30,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:10:30,397 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:30,401 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:30,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 578 transitions. [2020-04-18 19:10:30,449 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:30,513 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:10:30,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:10:30,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:10:30,514 INFO L87 Difference]: Start difference. First operand 1874 states and 5287 transitions. Second operand 9 states. [2020-04-18 19:10:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:30,824 INFO L93 Difference]: Finished difference Result 1928 states and 5364 transitions. [2020-04-18 19:10:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5364 transitions. [2020-04-18 19:10:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:30,828 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:10:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1013612037, now seen corresponding path program 5 times [2020-04-18 19:10:30,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:30,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508984905] [2020-04-18 19:10:30,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:30,944 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 19:10:30,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508984905] [2020-04-18 19:10:30,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:30,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:30,945 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:30,951 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:30,994 INFO L259 McrAutomatonBuilder]: Finished intersection with 258 states and 598 transitions. [2020-04-18 19:10:30,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:31,616 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:10:31,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:10:31,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:10:31,618 INFO L87 Difference]: Start difference. First operand 1928 states and 5364 transitions. Second operand 14 states. [2020-04-18 19:10:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:32,286 INFO L93 Difference]: Finished difference Result 1978 states and 5437 transitions. [2020-04-18 19:10:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5437 transitions. [2020-04-18 19:10:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:32,290 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:10:32,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1590955707, now seen corresponding path program 6 times [2020-04-18 19:10:32,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:32,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436425980] [2020-04-18 19:10:32,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:32,399 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 19:10:32,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436425980] [2020-04-18 19:10:32,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:32,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:32,400 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:32,404 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:32,428 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 502 transitions. [2020-04-18 19:10:32,428 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:32,509 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:10:32,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:10:32,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:10:32,510 INFO L87 Difference]: Start difference. First operand 1978 states and 5437 transitions. Second operand 13 states. [2020-04-18 19:10:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:32,942 INFO L93 Difference]: Finished difference Result 2250 states and 5978 transitions. [2020-04-18 19:10:32,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 5978 transitions. [2020-04-18 19:10:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:10:32,945 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:10:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:10:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1858029571, now seen corresponding path program 7 times [2020-04-18 19:10:32,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:10:32,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434647684] [2020-04-18 19:10:32,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:10:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:10:33,047 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 19:10:33,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434647684] [2020-04-18 19:10:33,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:10:33,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:10:33,049 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:10:33,052 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:10:33,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 199 states and 448 transitions. [2020-04-18 19:10:33,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:10:33,242 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:10:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:10:33,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:10:33,244 INFO L87 Difference]: Start difference. First operand 2250 states and 5978 transitions. Second operand 16 states. [2020-04-18 19:10:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:33,795 INFO L93 Difference]: Finished difference Result 2592 states and 6613 transitions. [2020-04-18 19:10:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 6613 transitions. [2020-04-18 19:10:33,799 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:33,800 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1878773320] [2020-04-18 19:10:33,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:10:33,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:10:33,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1878773320] [2020-04-18 19:10:33,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:10:33,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:10:33,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:10:33,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=3069, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 19:10:33,802 INFO L87 Difference]: Start difference. First operand 1600 states and 4950 transitions. Second operand 25 states. [2020-04-18 19:10:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:10:34,102 INFO L93 Difference]: Finished difference Result 1472 states and 4534 transitions. [2020-04-18 19:10:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:10:34,102 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 45 [2020-04-18 19:10:34,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:10:34,103 INFO L225 Difference]: With dead ends: 1472 [2020-04-18 19:10:34,103 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:10:34,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=880, Invalid=4090, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 19:10:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:10:34,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:10:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:10:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:10:34,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 19:10:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:10:34,106 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:10:34,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:10:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:10:34,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:10:34,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:10:34 BasicIcfg [2020-04-18 19:10:34,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:10:34,114 INFO L168 Benchmark]: Toolchain (without parser) took 14835.69 ms. Allocated memory was 138.4 MB in the beginning and 682.1 MB in the end (delta: 543.7 MB). Free memory was 101.3 MB in the beginning and 527.9 MB in the end (delta: -426.6 MB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,115 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 159.3 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.86 ms. Allocated memory is still 202.4 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,126 INFO L168 Benchmark]: Boogie Preprocessor took 28.36 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,128 INFO L168 Benchmark]: RCFGBuilder took 435.58 ms. Allocated memory is still 202.4 MB. Free memory was 155.2 MB in the beginning and 133.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,129 INFO L168 Benchmark]: TraceAbstraction took 13578.76 ms. Allocated memory was 202.4 MB in the beginning and 682.1 MB in the end (delta: 479.7 MB). Free memory was 133.0 MB in the beginning and 527.9 MB in the end (delta: -394.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:10:34,133 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.3 MB in the beginning and 159.3 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.86 ms. Allocated memory is still 202.4 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.36 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.58 ms. Allocated memory is still 202.4 MB. Free memory was 155.2 MB in the beginning and 133.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13578.76 ms. Allocated memory was 202.4 MB in the beginning and 682.1 MB in the end (delta: 479.7 MB). Free memory was 133.0 MB in the beginning and 527.9 MB in the end (delta: -394.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 13.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 723 SDtfs, 2321 SDslu, 3759 SDs, 0 SdLazy, 568 SolverSat, 130 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 947 GetRequests, 754 SyntacticMatches, 2 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5008 StatesRemovedByMinimization, 5 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...