/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:22:55,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:22:55,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:22:55,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:22:55,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:22:55,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:22:55,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:22:55,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:22:55,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:22:55,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:22:55,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:22:55,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:22:55,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:22:55,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:22:55,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:22:55,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:22:55,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:22:55,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:22:55,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:22:55,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:22:55,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:22:55,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:22:55,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:22:55,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:22:55,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:22:55,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:22:55,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:22:55,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:22:55,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:22:55,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:22:55,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:22:55,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:22:55,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:22:55,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:22:55,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:22:55,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:22:55,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:22:55,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:22:55,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:22:55,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:22:55,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:22:55,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:22:55,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:22:55,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:22:55,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:22:55,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:22:55,096 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:22:55,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:22:55,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:22:55,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:22:55,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:22:55,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:22:55,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:22:55,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:22:55,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:22:55,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:22:55,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:22:55,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:22:55,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:22:55,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:22:55,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:22:55,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:22:55,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:22:55,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:22:55,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:22:55,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:22:55,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:22:55,100 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:22:55,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:22:55,100 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:22:55,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:22:55,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:22:55,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:22:55,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:22:55,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:22:55,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:22:55,406 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:22:55,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-04-18 11:22:55,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fcc2760e/112192ee407a43ebbf1a08a84bf7f954/FLAG6a83608a0 [2020-04-18 11:22:56,017 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:22:56,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-04-18 11:22:56,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fcc2760e/112192ee407a43ebbf1a08a84bf7f954/FLAG6a83608a0 [2020-04-18 11:22:56,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fcc2760e/112192ee407a43ebbf1a08a84bf7f954 [2020-04-18 11:22:56,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:22:56,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:22:56,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:22:56,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:22:56,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:22:56,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:22:56" (1/1) ... [2020-04-18 11:22:56,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bea890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:56, skipping insertion in model container [2020-04-18 11:22:56,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:22:56" (1/1) ... [2020-04-18 11:22:56,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:22:56,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:22:56,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:22:56,935 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:22:57,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:22:57,092 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:22:57,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57 WrapperNode [2020-04-18 11:22:57,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:22:57,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:22:57,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:22:57,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:22:57,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:22:57,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:22:57,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:22:57,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:22:57,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... [2020-04-18 11:22:57,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:22:57,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:22:57,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:22:57,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:22:57,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:22:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:22:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:22:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:22:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:22:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:22:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:22:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:22:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:22:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:22:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:22:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:22:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:22:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:22:57,236 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:22:57,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:22:57,633 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:22:57,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:22:57 BoogieIcfgContainer [2020-04-18 11:22:57,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:22:57,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:22:57,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:22:57,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:22:57,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:22:56" (1/3) ... [2020-04-18 11:22:57,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210533fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:22:57, skipping insertion in model container [2020-04-18 11:22:57,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:22:57" (2/3) ... [2020-04-18 11:22:57,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210533fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:22:57, skipping insertion in model container [2020-04-18 11:22:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:22:57" (3/3) ... [2020-04-18 11:22:57,646 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-04-18 11:22:57,656 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:22:57,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:22:57,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:22:57,664 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:22:57,690 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,690 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,691 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,691 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,692 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,692 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,693 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,693 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,694 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,694 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,695 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,695 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,695 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,696 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,696 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,700 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,700 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,701 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,701 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,707 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,707 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,708 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,708 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,710 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,711 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,711 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,711 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:22:57,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:22:57,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:22:57,748 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:22:57,748 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:22:57,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:22:57,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:22:57,749 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:22:57,749 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:22:57,749 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:22:57,765 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 11:22:57,767 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:22:57,808 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:22:57,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:22:57,813 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:22:57,816 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:22:57,836 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:22:57,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:22:57,837 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:22:57,839 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:22:57,841 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:22:59,373 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-04-18 11:22:59,373 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-04-18 11:22:59,377 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:22:59,405 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:22:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:22:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:22:59,415 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:22:59,415 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:22:59,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:22:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:22:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-04-18 11:22:59,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:22:59,429 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [716048008] [2020-04-18 11:22:59,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:22:59,456 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:22:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:22:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:22:59,459 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:22:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:22:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 2 times [2020-04-18 11:22:59,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:22:59,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769219137] [2020-04-18 11:22:59,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:22:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:22:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:22:59,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769219137] [2020-04-18 11:22:59,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:22:59,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:22:59,629 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:22:59,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:22:59,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:22:59,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:22:59,636 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:22:59,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:22:59,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:22:59,641 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:22:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:22:59,644 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:22:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:22:59,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:22:59,645 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [716048008] [2020-04-18 11:22:59,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:22:59,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:22:59,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [716048008] [2020-04-18 11:22:59,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:22:59,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:22:59,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:22:59,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:22:59,651 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:22:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:22:59,674 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:22:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:22:59,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:22:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:22:59,695 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:22:59,695 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:22:59,696 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:22:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:22:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:22:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:22:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:22:59,774 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:22:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:22:59,775 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:22:59,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:22:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:22:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:22:59,777 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:22:59,777 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:22:59,778 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:22:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:22:59,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-04-18 11:22:59,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:22:59,778 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2046242634] [2020-04-18 11:22:59,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:22:59,779 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:22:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:22:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:22:59,780 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:22:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:22:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 2 times [2020-04-18 11:22:59,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:22:59,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584147700] [2020-04-18 11:22:59,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:22:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:22:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:22:59,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584147700] [2020-04-18 11:22:59,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:22:59,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:22:59,908 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:22:59,909 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:22:59,911 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:22:59,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:22:59,921 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:22:59,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:22:59,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:22:59,922 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:22:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:22:59,923 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:22:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:22:59,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:22:59,924 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2046242634] [2020-04-18 11:22:59,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:22:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:22:59,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2046242634] [2020-04-18 11:22:59,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:22:59,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:22:59,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:22:59,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:22:59,927 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 11:22:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:22:59,950 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 11:22:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:22:59,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:22:59,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:22:59,954 INFO L225 Difference]: With dead ends: 217 [2020-04-18 11:22:59,954 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 11:22:59,955 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:22:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 11:22:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 11:22:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 11:22:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 11:22:59,973 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 11:22:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:22:59,973 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 11:22:59,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:22:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 11:22:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:22:59,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:22:59,975 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:22:59,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:22:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:22:59,976 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-04-18 11:22:59,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:22:59,976 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2121228505] [2020-04-18 11:22:59,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:22:59,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-04-18 11:22:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:22:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:22:59,979 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:22:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:22:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash -900646617, now seen corresponding path program 2 times [2020-04-18 11:22:59,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:22:59,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426274431] [2020-04-18 11:22:59,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426274431] [2020-04-18 11:23:00,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:00,064 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:23:00,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,078 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:23:00,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:00,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:00,079 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:23:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,084 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2020-04-18 11:23:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-04-18 11:23:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:23:00,085 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:23:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,085 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 3 times [2020-04-18 11:23:00,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104788566] [2020-04-18 11:23:00,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104788566] [2020-04-18 11:23:00,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:00,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 11:23:00,196 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,238 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:23:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,239 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand 5 states. [2020-04-18 11:23:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,251 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2020-04-18 11:23:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2020-04-18 11:23:00,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:00,252 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2121228505] [2020-04-18 11:23:00,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:00,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:23:00,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2121228505] [2020-04-18 11:23:00,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:23:00,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:00,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,258 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-04-18 11:23:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,290 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 11:23:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:23:00,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 11:23:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:00,292 INFO L225 Difference]: With dead ends: 136 [2020-04-18 11:23:00,292 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 11:23:00,293 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 11:23:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 11:23:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 11:23:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 11:23:00,300 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 11:23:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:00,301 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 11:23:00,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:23:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 11:23:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:23:00,303 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:23:00,303 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:23:00,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:23:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-04-18 11:23:00,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:23:00,304 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [269063871] [2020-04-18 11:23:00,305 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 162 transitions. [2020-04-18 11:23:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-04-18 11:23:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:23:00,309 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:23:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,309 INFO L82 PathProgramCache]: Analyzing trace with hash -614947198, now seen corresponding path program 2 times [2020-04-18 11:23:00,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002725475] [2020-04-18 11:23:00,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002725475] [2020-04-18 11:23:00,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:00,350 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,351 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,355 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 11:23:00,355 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,372 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:23:00,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:00,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:00,373 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-04-18 11:23:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,392 INFO L93 Difference]: Finished difference Result 97 states and 194 transitions. [2020-04-18 11:23:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 194 transitions. [2020-04-18 11:23:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:23:00,393 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:23:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -995690266, now seen corresponding path program 3 times [2020-04-18 11:23:00,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577506353] [2020-04-18 11:23:00,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577506353] [2020-04-18 11:23:00,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:00,463 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,465 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,467 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 31 transitions. [2020-04-18 11:23:00,468 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,472 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:00,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:00,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:23:00,473 INFO L87 Difference]: Start difference. First operand 97 states and 194 transitions. Second operand 4 states. [2020-04-18 11:23:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,487 INFO L93 Difference]: Finished difference Result 100 states and 196 transitions. [2020-04-18 11:23:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 196 transitions. [2020-04-18 11:23:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:23:00,488 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:23:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 4 times [2020-04-18 11:23:00,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904385968] [2020-04-18 11:23:00,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904385968] [2020-04-18 11:23:00,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:23:00,569 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,573 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-04-18 11:23:00,573 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,582 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,582 INFO L87 Difference]: Start difference. First operand 100 states and 196 transitions. Second operand 5 states. [2020-04-18 11:23:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,598 INFO L93 Difference]: Finished difference Result 100 states and 196 transitions. [2020-04-18 11:23:00,598 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 196 transitions. [2020-04-18 11:23:00,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:00,599 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [269063871] [2020-04-18 11:23:00,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:00,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:23:00,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [269063871] [2020-04-18 11:23:00,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:23:00,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,600 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 11:23:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,656 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 11:23:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:23:00,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 11:23:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:00,658 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:23:00,658 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 11:23:00,659 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 11:23:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 11:23:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 11:23:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 11:23:00,668 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 11:23:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:00,670 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 11:23:00,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:23:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 11:23:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:00,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:23:00,672 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:23:00,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:23:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-04-18 11:23:00,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:23:00,674 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [619044732] [2020-04-18 11:23:00,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,684 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 11:23:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:23:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:00,693 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:23:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1873682287, now seen corresponding path program 2 times [2020-04-18 11:23:00,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855889465] [2020-04-18 11:23:00,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855889465] [2020-04-18 11:23:00,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:23:00,752 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,753 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,763 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 145 transitions. [2020-04-18 11:23:00,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,768 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:23:00,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:23:00,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:23:00,769 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:23:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,782 INFO L93 Difference]: Finished difference Result 409 states and 1127 transitions. [2020-04-18 11:23:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1127 transitions. [2020-04-18 11:23:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:00,784 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:23:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1581792339, now seen corresponding path program 3 times [2020-04-18 11:23:00,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715392364] [2020-04-18 11:23:00,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715392364] [2020-04-18 11:23:00,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:00,816 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,818 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,825 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 95 transitions. [2020-04-18 11:23:00,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,832 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:00,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:00,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:23:00,833 INFO L87 Difference]: Start difference. First operand 409 states and 1127 transitions. Second operand 4 states. [2020-04-18 11:23:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,861 INFO L93 Difference]: Finished difference Result 439 states and 1174 transitions. [2020-04-18 11:23:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1174 transitions. [2020-04-18 11:23:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:00,863 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:23:00,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1381396637, now seen corresponding path program 4 times [2020-04-18 11:23:00,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286437819] [2020-04-18 11:23:00,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:00,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286437819] [2020-04-18 11:23:00,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:00,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:23:00,923 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:00,925 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:00,931 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 81 transitions. [2020-04-18 11:23:00,931 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:00,938 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:00,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:00,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:23:00,939 INFO L87 Difference]: Start difference. First operand 439 states and 1174 transitions. Second operand 5 states. [2020-04-18 11:23:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:00,979 INFO L93 Difference]: Finished difference Result 442 states and 1176 transitions. [2020-04-18 11:23:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1176 transitions. [2020-04-18 11:23:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:00,981 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:23:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:00,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2050108487, now seen corresponding path program 5 times [2020-04-18 11:23:00,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:00,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682595477] [2020-04-18 11:23:00,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:01,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682595477] [2020-04-18 11:23:01,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:01,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:23:01,071 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:01,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:01,079 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 73 transitions. [2020-04-18 11:23:01,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:01,103 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:23:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:01,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:23:01,104 INFO L87 Difference]: Start difference. First operand 442 states and 1176 transitions. Second operand 5 states. [2020-04-18 11:23:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:01,155 INFO L93 Difference]: Finished difference Result 968 states and 2447 transitions. [2020-04-18 11:23:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2447 transitions. [2020-04-18 11:23:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:01,159 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:23:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash -457536705, now seen corresponding path program 6 times [2020-04-18 11:23:01,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:01,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131526523] [2020-04-18 11:23:01,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:01,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131526523] [2020-04-18 11:23:01,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:01,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:23:01,219 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:01,221 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:01,227 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 99 transitions. [2020-04-18 11:23:01,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:01,304 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:23:01,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:23:01,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:23:01,305 INFO L87 Difference]: Start difference. First operand 968 states and 2447 transitions. Second operand 7 states. [2020-04-18 11:23:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:01,424 INFO L93 Difference]: Finished difference Result 1641 states and 4046 transitions. [2020-04-18 11:23:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 4046 transitions. [2020-04-18 11:23:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:01,464 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:23:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:01,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1548207031, now seen corresponding path program 7 times [2020-04-18 11:23:01,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:01,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980632528] [2020-04-18 11:23:01,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:01,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980632528] [2020-04-18 11:23:01,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:01,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:23:01,517 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:01,518 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:01,522 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-04-18 11:23:01,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:01,541 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:23:01,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:23:01,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:23:01,541 INFO L87 Difference]: Start difference. First operand 1641 states and 4046 transitions. Second operand 5 states. [2020-04-18 11:23:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:01,587 INFO L93 Difference]: Finished difference Result 2337 states and 5553 transitions. [2020-04-18 11:23:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 5553 transitions. [2020-04-18 11:23:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:23:01,594 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:23:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:23:01,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1271535879, now seen corresponding path program 8 times [2020-04-18 11:23:01,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:23:01,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381844219] [2020-04-18 11:23:01,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:23:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:23:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:23:01,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381844219] [2020-04-18 11:23:01,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:23:01,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:23:01,634 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:23:01,636 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:23:01,640 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 60 transitions. [2020-04-18 11:23:01,641 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:23:01,662 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:23:01,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:23:01,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:23:01,662 INFO L87 Difference]: Start difference. First operand 2337 states and 5553 transitions. Second operand 4 states. [2020-04-18 11:23:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:01,702 INFO L93 Difference]: Finished difference Result 4040 states and 9230 transitions. [2020-04-18 11:23:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 9230 transitions. [2020-04-18 11:23:01,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:01,713 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [619044732] [2020-04-18 11:23:01,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:23:01,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:23:01,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [619044732] [2020-04-18 11:23:01,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 11:23:01,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:23:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:23:01,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:23:01,714 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 14 states. [2020-04-18 11:23:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:23:03,219 INFO L93 Difference]: Finished difference Result 358 states and 695 transitions. [2020-04-18 11:23:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-04-18 11:23:03,219 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-04-18 11:23:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:23:03,220 INFO L225 Difference]: With dead ends: 358 [2020-04-18 11:23:03,220 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:23:03,222 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2683 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=930, Invalid=6552, Unknown=0, NotChecked=0, Total=7482 [2020-04-18 11:23:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:23:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:23:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:23:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:23:03,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:23:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:23:03,224 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:23:03,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 11:23:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:23:03,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:23:03,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:23:03 BasicIcfg [2020-04-18 11:23:03,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:23:03,231 INFO L168 Benchmark]: Toolchain (without parser) took 6924.58 ms. Allocated memory was 138.9 MB in the beginning and 289.9 MB in the end (delta: 151.0 MB). Free memory was 102.4 MB in the beginning and 159.8 MB in the end (delta: -57.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:03,231 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:23:03,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.60 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 158.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:03,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.81 ms. Allocated memory is still 201.3 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 11:23:03,234 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 201.3 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:03,234 INFO L168 Benchmark]: RCFGBuilder took 469.31 ms. Allocated memory is still 201.3 MB. Free memory was 154.6 MB in the beginning and 133.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:03,235 INFO L168 Benchmark]: TraceAbstraction took 5589.49 ms. Allocated memory was 201.3 MB in the beginning and 289.9 MB in the end (delta: 88.6 MB). Free memory was 132.5 MB in the beginning and 159.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:23:03,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.60 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 158.6 MB in the end (delta: -58.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.81 ms. Allocated memory is still 201.3 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 26.03 ms. Allocated memory is still 201.3 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.31 ms. Allocated memory is still 201.3 MB. Free memory was 154.6 MB in the beginning and 133.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5589.49 ms. Allocated memory was 201.3 MB in the beginning and 289.9 MB in the end (delta: 88.6 MB). Free memory was 132.5 MB in the beginning and 159.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 102 SDtfs, 242 SDslu, 291 SDs, 0 SdLazy, 508 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 340 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2683 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...