/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:19:54,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:19:54,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:19:55,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:19:55,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:19:55,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:19:55,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:19:55,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:19:55,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:19:55,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:19:55,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:19:55,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:19:55,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:19:55,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:19:55,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:19:55,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:19:55,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:19:55,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:19:55,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:19:55,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:19:55,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:19:55,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:19:55,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:19:55,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:19:55,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:19:55,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:19:55,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:19:55,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:19:55,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:19:55,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:19:55,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:19:55,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:19:55,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:19:55,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:19:55,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:19:55,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:19:55,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:19:55,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:19:55,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:19:55,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:19:55,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:19:55,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:19:55,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:19:55,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:19:55,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:19:55,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:19:55,084 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:19:55,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:19:55,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:19:55,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:19:55,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:19:55,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:19:55,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:19:55,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:19:55,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:19:55,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:19:55,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:19:55,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:19:55,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:19:55,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:19:55,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:19:55,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:19:55,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:19:55,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:19:55,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:19:55,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:19:55,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:19:55,088 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:19:55,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:19:55,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:19:55,089 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:19:55,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:19:55,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:19:55,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:19:55,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:19:55,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:19:55,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:19:55,430 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:19:55,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-04-18 15:19:55,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9bc38e6/b0d441286be046f3bf96625f04270a98/FLAG416168c35 [2020-04-18 15:19:56,078 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:19:56,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-04-18 15:19:56,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9bc38e6/b0d441286be046f3bf96625f04270a98/FLAG416168c35 [2020-04-18 15:19:56,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9bc38e6/b0d441286be046f3bf96625f04270a98 [2020-04-18 15:19:56,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:19:56,396 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:19:56,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:19:56,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:19:56,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:19:56,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:19:56" (1/1) ... [2020-04-18 15:19:56,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36972d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:56, skipping insertion in model container [2020-04-18 15:19:56,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:19:56" (1/1) ... [2020-04-18 15:19:56,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:19:56,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:19:56,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:19:56,942 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:19:57,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:19:57,114 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:19:57,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57 WrapperNode [2020-04-18 15:19:57,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:19:57,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:19:57,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:19:57,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:19:57,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:19:57,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:19:57,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:19:57,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:19:57,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (1/1) ... [2020-04-18 15:19:57,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:19:57,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:19:57,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:19:57,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:19:57,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (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 15:19:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:19:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:19:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:19:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:19:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:19:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:19:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:19:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:19:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:19:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:19:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:19:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:19:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:19:57,276 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:19:57,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:19:57,655 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:19:57,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:19:57 BoogieIcfgContainer [2020-04-18 15:19:57,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:19:57,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:19:57,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:19:57,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:19:57,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:19:56" (1/3) ... [2020-04-18 15:19:57,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70774903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:19:57, skipping insertion in model container [2020-04-18 15:19:57,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:19:57" (2/3) ... [2020-04-18 15:19:57,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70774903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:19:57, skipping insertion in model container [2020-04-18 15:19:57,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:19:57" (3/3) ... [2020-04-18 15:19:57,668 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-04-18 15:19:57,676 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:19:57,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:19:57,682 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:19:57,683 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:19:57,712 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,712 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,713 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,713 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,714 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,714 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,714 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,715 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,715 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,715 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,715 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,716 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,717 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,717 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,718 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,722 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,722 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,722 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,723 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,728 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,729 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,729 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,729 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,732 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,732 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:19:57,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:19:57,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:19:57,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:19:57,763 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:19:57,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:19:57,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:19:57,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:19:57,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:19:57,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:19:57,777 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 15:19:57,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:19:57,820 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:19:57,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:19:57,825 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:19:57,828 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:19:57,849 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:19:57,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:19:57,850 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:19:57,852 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:19:57,853 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:19:59,220 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-04-18 15:19:59,220 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 15:19:59,223 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:19:59,247 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-04-18 15:19:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-04-18 15:19:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:19:59,257 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:59,258 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:59,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:59,264 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-04-18 15:19:59,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:59,272 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1307372001] [2020-04-18 15:19:59,287 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:59,300 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:19:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:19:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:19:59,302 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:59,303 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 2 times [2020-04-18 15:19:59,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:59,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648633058] [2020-04-18 15:19:59,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:59,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648633058] [2020-04-18 15:19:59,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:59,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:59,491 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:59,492 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:59,496 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:19:59,496 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:59,500 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:19:59,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:19:59,507 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:19:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:59,511 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:19:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:19:59,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:59,513 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1307372001] [2020-04-18 15:19:59,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:59,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:59,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1307372001] [2020-04-18 15:19:59,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:19:59,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:59,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:19:59,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:19:59,520 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-04-18 15:19:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:59,539 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-04-18 15:19:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:19:59,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:19:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:59,555 INFO L225 Difference]: With dead ends: 274 [2020-04-18 15:19:59,555 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 15:19:59,556 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 15:19:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 15:19:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 15:19:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 15:19:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-04-18 15:19:59,625 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-04-18 15:19:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:59,626 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-04-18 15:19:59,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:19:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-04-18 15:19:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:19:59,628 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:59,628 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:59,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-04-18 15:19:59,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:59,629 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [217472163] [2020-04-18 15:19:59,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:59,631 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:19:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:19:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:19:59,631 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:59,632 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 2 times [2020-04-18 15:19:59,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:59,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475116063] [2020-04-18 15:19:59,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:59,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475116063] [2020-04-18 15:19:59,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:59,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:19:59,770 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:59,771 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:59,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:19:59,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:19:59,793 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:19:59,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:59,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:19:59,796 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 15:19:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:59,812 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:19:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:19:59,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:19:59,813 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [217472163] [2020-04-18 15:19:59,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:19:59,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:19:59,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [217472163] [2020-04-18 15:19:59,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:19:59,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:19:59,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:19:59,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:19:59,816 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-04-18 15:19:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:19:59,852 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 15:19:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:19:59,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:19:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:19:59,858 INFO L225 Difference]: With dead ends: 250 [2020-04-18 15:19:59,859 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:19:59,862 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:19:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:19:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:19:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:19:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-04-18 15:19:59,900 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-04-18 15:19:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:19:59,900 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-04-18 15:19:59,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:19:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-04-18 15:19:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:19:59,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:19:59,905 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:19:59,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:19:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:59,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-04-18 15:19:59,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:19:59,906 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [995738557] [2020-04-18 15:19:59,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:19:59,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:19:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:19:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:19:59,908 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:19:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:19:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1465182248, now seen corresponding path program 2 times [2020-04-18 15:19:59,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:19:59,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810891527] [2020-04-18 15:19:59,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:19:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:19:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:19:59,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810891527] [2020-04-18 15:19:59,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:19:59,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:19:59,998 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:19:59,999 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,000 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:20:00,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,012 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:20:00,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:20:00,013 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-04-18 15:20:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,031 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-04-18 15:20:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-04-18 15:20:00,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:00,033 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [995738557] [2020-04-18 15:20:00,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:20:00,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:20:00,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [995738557] [2020-04-18 15:20:00,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:20:00,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:20:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:20:00,035 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-04-18 15:20:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,058 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-04-18 15:20:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:20:00,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:20:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:20:00,061 INFO L225 Difference]: With dead ends: 232 [2020-04-18 15:20:00,061 INFO L226 Difference]: Without dead ends: 196 [2020-04-18 15:20:00,062 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:20:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-04-18 15:20:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-04-18 15:20:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-04-18 15:20:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-04-18 15:20:00,093 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-04-18 15:20:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:20:00,094 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-04-18 15:20:00,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:20:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-04-18 15:20:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:20:00,097 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:20:00,097 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:20:00,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:20:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,098 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-04-18 15:20:00,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:20:00,098 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1221040016] [2020-04-18 15:20:00,101 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,101 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 42 transitions. [2020-04-18 15:20:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:20:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:20:00,103 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:20:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash 462893661, now seen corresponding path program 2 times [2020-04-18 15:20:00,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:00,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522150213] [2020-04-18 15:20:00,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:00,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522150213] [2020-04-18 15:20:00,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:00,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:00,198 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:00,199 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,201 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:20:00,201 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,211 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:20:00,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:00,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:20:00,212 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 15:20:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,228 INFO L93 Difference]: Finished difference Result 30 states and 46 transitions. [2020-04-18 15:20:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2020-04-18 15:20:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:20:00,229 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:20:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 3 times [2020-04-18 15:20:00,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:00,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965051218] [2020-04-18 15:20:00,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:00,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965051218] [2020-04-18 15:20:00,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:00,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:00,318 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:00,319 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,321 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 15:20:00,321 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,331 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:20:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:20:00,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:20:00,332 INFO L87 Difference]: Start difference. First operand 30 states and 46 transitions. Second operand 5 states. [2020-04-18 15:20:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,355 INFO L93 Difference]: Finished difference Result 30 states and 46 transitions. [2020-04-18 15:20:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2020-04-18 15:20:00,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:00,356 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1221040016] [2020-04-18 15:20:00,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:20:00,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:20:00,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1221040016] [2020-04-18 15:20:00,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:20:00,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:20:00,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:20:00,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:20:00,358 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-04-18 15:20:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,383 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-04-18 15:20:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:20:00,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:20:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:20:00,385 INFO L225 Difference]: With dead ends: 255 [2020-04-18 15:20:00,385 INFO L226 Difference]: Without dead ends: 150 [2020-04-18 15:20:00,386 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:20:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-18 15:20:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-18 15:20:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-18 15:20:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-04-18 15:20:00,394 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-04-18 15:20:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:20:00,394 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-04-18 15:20:00,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:20:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-04-18 15:20:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:20:00,395 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:20:00,396 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:20:00,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:20:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-04-18 15:20:00,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:20:00,397 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [890512820] [2020-04-18 15:20:00,397 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,398 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 96 transitions. [2020-04-18 15:20:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 15:20:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:20:00,400 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:20:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash 266065162, now seen corresponding path program 2 times [2020-04-18 15:20:00,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:00,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714800241] [2020-04-18 15:20:00,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:00,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714800241] [2020-04-18 15:20:00,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:00,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:00,445 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:00,446 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,450 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 45 transitions. [2020-04-18 15:20:00,450 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,466 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:20:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:00,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:20:00,470 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 15:20:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,492 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 15:20:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 15:20:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:20:00,493 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:20:00,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,494 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 3 times [2020-04-18 15:20:00,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:00,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820328686] [2020-04-18 15:20:00,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:00,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820328686] [2020-04-18 15:20:00,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:00,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:00,568 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:00,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-04-18 15:20:00,573 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,594 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:20:00,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:00,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:20:00,595 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 4 states. [2020-04-18 15:20:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,608 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 15:20:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 15:20:00,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:00,610 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [890512820] [2020-04-18 15:20:00,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:20:00,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:20:00,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [890512820] [2020-04-18 15:20:00,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:20:00,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:20:00,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:20:00,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:20:00,612 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 6 states. [2020-04-18 15:20:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,707 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-04-18 15:20:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:20:00,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 15:20:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:20:00,708 INFO L225 Difference]: With dead ends: 164 [2020-04-18 15:20:00,708 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 15:20:00,709 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:20:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 15:20:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 15:20:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 15:20:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-04-18 15:20:00,714 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-04-18 15:20:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:20:00,714 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-04-18 15:20:00,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:20:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-04-18 15:20:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:20:00,715 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:20:00,715 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:20:00,716 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:20:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-04-18 15:20:00,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:20:00,716 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1279578939] [2020-04-18 15:20:00,717 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,718 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 150 transitions. [2020-04-18 15:20:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 15:20:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:20:00,720 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:20:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1292416845, now seen corresponding path program 2 times [2020-04-18 15:20:00,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:00,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078931342] [2020-04-18 15:20:00,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:00,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078931342] [2020-04-18 15:20:00,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:00,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:00,796 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:00,797 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,800 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 49 transitions. [2020-04-18 15:20:00,800 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:20:00,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:00,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:20:00,811 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-04-18 15:20:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,828 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:20:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:20:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:20:00,829 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:20:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 3 times [2020-04-18 15:20:00,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:00,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823829554] [2020-04-18 15:20:00,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:00,906 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 15:20:00,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823829554] [2020-04-18 15:20:00,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:00,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:20:00,907 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:00,908 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:00,912 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 59 transitions. [2020-04-18 15:20:00,913 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:00,943 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:20:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:20:00,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:20:00,944 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 5 states. [2020-04-18 15:20:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:00,979 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:20:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:20:00,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:00,980 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1279578939] [2020-04-18 15:20:00,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:20:00,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:20:00,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1279578939] [2020-04-18 15:20:00,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:20:00,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:20:00,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:20:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:20:00,982 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 7 states. [2020-04-18 15:20:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,070 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-04-18 15:20:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:20:01,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:20:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:20:01,071 INFO L225 Difference]: With dead ends: 116 [2020-04-18 15:20:01,071 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 15:20:01,072 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:20:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 15:20:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 15:20:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 15:20:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-04-18 15:20:01,075 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-04-18 15:20:01,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:20:01,076 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-04-18 15:20:01,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:20:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-04-18 15:20:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:20:01,077 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:20:01,077 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:20:01,077 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:20:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-04-18 15:20:01,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:20:01,078 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [97945559] [2020-04-18 15:20:01,078 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,080 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 118 transitions. [2020-04-18 15:20:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 15:20:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:20:01,081 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:20:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,082 INFO L82 PathProgramCache]: Analyzing trace with hash 710821399, now seen corresponding path program 2 times [2020-04-18 15:20:01,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:01,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361217174] [2020-04-18 15:20:01,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:01,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361217174] [2020-04-18 15:20:01,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:01,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:01,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:01,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,123 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-04-18 15:20:01,123 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:01,133 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:20:01,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:01,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:20:01,134 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 15:20:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,149 INFO L93 Difference]: Finished difference Result 70 states and 138 transitions. [2020-04-18 15:20:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 138 transitions. [2020-04-18 15:20:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:20:01,150 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:20:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 671669119, now seen corresponding path program 3 times [2020-04-18 15:20:01,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:01,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117142862] [2020-04-18 15:20:01,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:01,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117142862] [2020-04-18 15:20:01,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:01,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:01,195 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:01,196 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,202 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:20:01,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:01,212 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:20:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:20:01,212 INFO L87 Difference]: Start difference. First operand 70 states and 138 transitions. Second operand 4 states. [2020-04-18 15:20:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,228 INFO L93 Difference]: Finished difference Result 70 states and 138 transitions. [2020-04-18 15:20:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 138 transitions. [2020-04-18 15:20:01,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:01,229 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [97945559] [2020-04-18 15:20:01,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:20:01,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:20:01,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [97945559] [2020-04-18 15:20:01,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:20:01,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:20:01,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:20:01,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:20:01,231 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 5 states. [2020-04-18 15:20:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,247 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-04-18 15:20:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:20:01,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 15:20:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:20:01,248 INFO L225 Difference]: With dead ends: 120 [2020-04-18 15:20:01,248 INFO L226 Difference]: Without dead ends: 94 [2020-04-18 15:20:01,249 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:20:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-04-18 15:20:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-04-18 15:20:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-18 15:20:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-04-18 15:20:01,252 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-04-18 15:20:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:20:01,252 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-04-18 15:20:01,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:20:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-04-18 15:20:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:20:01,253 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:20:01,253 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:20:01,254 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:20:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-04-18 15:20:01,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:20:01,254 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1002670900] [2020-04-18 15:20:01,255 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,260 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 330 transitions. [2020-04-18 15:20:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-04-18 15:20:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:20:01,262 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:20:01,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1328851933, now seen corresponding path program 2 times [2020-04-18 15:20:01,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:01,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660336191] [2020-04-18 15:20:01,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:01,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660336191] [2020-04-18 15:20:01,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:01,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:20:01,299 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:01,300 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,308 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 15:20:01,308 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:01,321 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:20:01,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:20:01,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:20:01,322 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 4 states. [2020-04-18 15:20:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,337 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 15:20:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 15:20:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:20:01,338 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:20:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1330060933, now seen corresponding path program 3 times [2020-04-18 15:20:01,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:01,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906056984] [2020-04-18 15:20:01,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:01,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906056984] [2020-04-18 15:20:01,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:01,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:20:01,380 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:01,381 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,386 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 89 transitions. [2020-04-18 15:20:01,386 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:01,399 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:20:01,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:20:01,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:20:01,400 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 5 states. [2020-04-18 15:20:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,450 INFO L93 Difference]: Finished difference Result 226 states and 520 transitions. [2020-04-18 15:20:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 520 transitions. [2020-04-18 15:20:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:20:01,451 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:20:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,453 INFO L82 PathProgramCache]: Analyzing trace with hash -804564983, now seen corresponding path program 4 times [2020-04-18 15:20:01,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:01,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147567896] [2020-04-18 15:20:01,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:01,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147567896] [2020-04-18 15:20:01,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:01,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:20:01,545 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:01,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,550 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 15:20:01,551 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:01,585 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:20:01,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:20:01,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:20:01,586 INFO L87 Difference]: Start difference. First operand 226 states and 520 transitions. Second operand 5 states. [2020-04-18 15:20:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,644 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 15:20:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 15:20:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:20:01,645 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:20:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:20:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash -799092577, now seen corresponding path program 5 times [2020-04-18 15:20:01,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:20:01,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460551471] [2020-04-18 15:20:01,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:20:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:20:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:20:01,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460551471] [2020-04-18 15:20:01,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:20:01,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:20:01,707 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:20:01,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:20:01,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 15:20:01,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:20:01,785 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:20:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:20:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:20:01,786 INFO L87 Difference]: Start difference. First operand 242 states and 536 transitions. Second operand 7 states. [2020-04-18 15:20:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:01,838 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 15:20:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 15:20:01,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:01,839 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1002670900] [2020-04-18 15:20:01,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:20:01,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:20:01,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1002670900] [2020-04-18 15:20:01,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:20:01,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:20:01,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:20:01,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:20:01,841 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 11 states. [2020-04-18 15:20:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:20:02,206 INFO L93 Difference]: Finished difference Result 98 states and 185 transitions. [2020-04-18 15:20:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:20:02,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 15:20:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:20:02,207 INFO L225 Difference]: With dead ends: 98 [2020-04-18 15:20:02,207 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:20:02,208 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 15:20:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:20:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:20:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:20:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:20:02,209 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 15:20:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:20:02,209 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:20:02,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:20:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:20:02,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:20:02,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:20:02 BasicIcfg [2020-04-18 15:20:02,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:20:02,216 INFO L168 Benchmark]: Toolchain (without parser) took 5839.72 ms. Allocated memory was 138.4 MB in the beginning and 288.9 MB in the end (delta: 150.5 MB). Free memory was 101.2 MB in the beginning and 156.0 MB in the end (delta: -54.7 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2020-04-18 15:20:02,216 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:20:02,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.61 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.5 MB in the beginning and 155.5 MB in the end (delta: -55.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:20:02,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.08 ms. Allocated memory is still 200.8 MB. Free memory was 155.5 MB in the beginning and 153.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:20:02,218 INFO L168 Benchmark]: Boogie Preprocessor took 26.70 ms. Allocated memory is still 200.8 MB. Free memory was 153.5 MB in the beginning and 151.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:20:02,219 INFO L168 Benchmark]: RCFGBuilder took 443.63 ms. Allocated memory is still 200.8 MB. Free memory was 151.5 MB in the beginning and 129.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:20:02,220 INFO L168 Benchmark]: TraceAbstraction took 4552.86 ms. Allocated memory was 200.8 MB in the beginning and 288.9 MB in the end (delta: 88.1 MB). Free memory was 129.4 MB in the beginning and 156.0 MB in the end (delta: -26.6 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:20:02,223 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 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.61 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.5 MB in the beginning and 155.5 MB in the end (delta: -55.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.08 ms. Allocated memory is still 200.8 MB. Free memory was 155.5 MB in the beginning and 153.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.70 ms. Allocated memory is still 200.8 MB. Free memory was 153.5 MB in the beginning and 151.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.63 ms. Allocated memory is still 200.8 MB. Free memory was 151.5 MB in the beginning and 129.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4552.86 ms. Allocated memory was 200.8 MB in the beginning and 288.9 MB in the end (delta: 88.1 MB). Free memory was 129.4 MB in the beginning and 156.0 MB in the end (delta: -26.6 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 164 SDtfs, 177 SDslu, 335 SDs, 0 SdLazy, 232 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 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...