/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:00:55,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:00:55,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:00:55,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:00:55,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:00:55,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:00:55,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:00:55,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:00:55,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:00:55,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:00:55,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:00:55,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:00:55,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:00:55,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:00:55,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:00:55,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:00:55,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:00:55,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:00:55,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:00:55,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:00:55,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:00:55,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:00:55,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:00:55,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:00:55,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:00:55,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:00:55,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:00:55,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:00:55,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:00:55,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:00:55,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:00:55,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:00:55,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:00:55,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:00:55,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:00:55,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:00:55,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:00:55,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:00:55,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:00:55,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:00:55,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:00:55,130 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:00:55,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:00:55,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:00:55,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:00:55,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:00:55,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:00:55,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:00:55,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:00:55,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:00:55,132 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:00:55,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:00:55,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:00:55,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:00:55,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:00:55,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:00:55,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:00:55,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:00:55,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:00:55,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:00:55,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:00:55,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:00:55,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:00:55,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:00:55,141 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:00:55,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:00:55,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:00:55,141 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:00:55,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:00:55,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:00:55,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:00:55,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:00:55,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:00:55,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-09-12 00:00:55,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82fc9872/fb269842b8eb47be917a72458600a201/FLAG2bfbc785f [2020-09-12 00:00:56,336 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:00:56,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-09-12 00:00:56,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82fc9872/fb269842b8eb47be917a72458600a201/FLAG2bfbc785f [2020-09-12 00:00:56,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82fc9872/fb269842b8eb47be917a72458600a201 [2020-09-12 00:00:56,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:00:56,612 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:00:56,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:00:56,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:00:56,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:00:56,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:00:56" (1/1) ... [2020-09-12 00:00:56,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f043bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:56, skipping insertion in model container [2020-09-12 00:00:56,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:00:56" (1/1) ... [2020-09-12 00:00:56,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:00:56,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:00:57,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:00:57,244 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:00:57,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:00:57,425 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:00:57,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57 WrapperNode [2020-09-12 00:00:57,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:00:57,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:00:57,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:00:57,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:00:57,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:00:57,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:00:57,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:00:57,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:00:57,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... [2020-09-12 00:00:57,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:00:57,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:00:57,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:00:57,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:00:57,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:00:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:00:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:00:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:00:57,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:00:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:00:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:00:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:00:57,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:00:57,604 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:00:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:00:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-12 00:00:57,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-12 00:00:57,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:00:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:00:57,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:00:57,608 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:00:58,024 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:00:58,025 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:00:58,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:00:58 BoogieIcfgContainer [2020-09-12 00:00:58,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:00:58,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:00:58,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:00:58,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:00:58,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:00:56" (1/3) ... [2020-09-12 00:00:58,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1906ccae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:00:58, skipping insertion in model container [2020-09-12 00:00:58,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:00:57" (2/3) ... [2020-09-12 00:00:58,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1906ccae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:00:58, skipping insertion in model container [2020-09-12 00:00:58,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:00:58" (3/3) ... [2020-09-12 00:00:58,040 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-09-12 00:00:58,055 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:00:58,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:00:58,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:00:58,066 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:00:58,095 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,097 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,098 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,098 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,098 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,101 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,102 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,102 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,102 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,107 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,107 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,107 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,108 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,124 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,128 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:00:58,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-12 00:00:58,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:00:58,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:00:58,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:00:58,179 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:00:58,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:00:58,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:00:58,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:00:58,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:00:58,197 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-09-12 00:00:58,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-09-12 00:00:58,259 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-12 00:00:58,259 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:00:58,269 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-12 00:00:58,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-09-12 00:00:58,298 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-12 00:00:58,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:00:58,299 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-12 00:00:58,302 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-12 00:00:58,303 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:00:59,628 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-12 00:00:59,713 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-09-12 00:00:59,714 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-09-12 00:00:59,718 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-12 00:00:59,780 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-12 00:00:59,783 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-12 00:00:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:00:59,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:00:59,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:00:59,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:00:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:00:59,804 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-09-12 00:00:59,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:00:59,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270464872] [2020-09-12 00:00:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:00:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:00,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270464872] [2020-09-12 00:01:00,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:00,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:01:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [104109126] [2020-09-12 00:01:00,055 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:00,059 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:00,074 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-12 00:01:00,075 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:00,077 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:00,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-12 00:01:00,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:00,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-12 00:01:00,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:01:00,099 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-12 00:01:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:00,150 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-12 00:01:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-12 00:01:00,152 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-12 00:01:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:00,187 INFO L225 Difference]: With dead ends: 850 [2020-09-12 00:01:00,187 INFO L226 Difference]: Without dead ends: 706 [2020-09-12 00:01:00,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:01:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-12 00:01:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-12 00:01:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-12 00:01:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-12 00:01:00,332 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-12 00:01:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:00,333 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-12 00:01:00,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-12 00:01:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-12 00:01:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:01:00,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:00,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:00,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:01:00,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-09-12 00:01:00,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:00,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026689148] [2020-09-12 00:01:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:00,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026689148] [2020-09-12 00:01:00,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:00,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:01:00,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [312244573] [2020-09-12 00:01:00,561 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:00,562 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:00,564 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-12 00:01:00,564 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:00,565 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:00,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:01:00,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:00,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:01:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:01:00,568 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-12 00:01:00,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:00,624 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-09-12 00:01:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:01:00,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-12 00:01:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:00,631 INFO L225 Difference]: With dead ends: 778 [2020-09-12 00:01:00,631 INFO L226 Difference]: Without dead ends: 634 [2020-09-12 00:01:00,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-12 00:01:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-09-12 00:01:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-09-12 00:01:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-09-12 00:01:00,671 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-09-12 00:01:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:00,671 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-09-12 00:01:00,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:01:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-09-12 00:01:00,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:01:00,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:00,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:00,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:01:00,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:00,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:00,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-09-12 00:01:00,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:00,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368505764] [2020-09-12 00:01:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:00,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368505764] [2020-09-12 00:01:00,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:00,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:01:00,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [900231927] [2020-09-12 00:01:00,832 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:00,834 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:00,838 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-12 00:01:00,838 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:00,925 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:00,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:01:00,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:00,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:01:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:00,927 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 5 states. [2020-09-12 00:01:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:01,007 INFO L93 Difference]: Finished difference Result 814 states and 2703 transitions. [2020-09-12 00:01:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:01:01,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-12 00:01:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:01,011 INFO L225 Difference]: With dead ends: 814 [2020-09-12 00:01:01,011 INFO L226 Difference]: Without dead ends: 394 [2020-09-12 00:01:01,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:01:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-12 00:01:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-09-12 00:01:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-12 00:01:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1266 transitions. [2020-09-12 00:01:01,027 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1266 transitions. Word has length 12 [2020-09-12 00:01:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:01,027 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1266 transitions. [2020-09-12 00:01:01,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:01:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1266 transitions. [2020-09-12 00:01:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:01:01,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:01,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:01,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:01:01,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1921114608, now seen corresponding path program 1 times [2020-09-12 00:01:01,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:01,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900438484] [2020-09-12 00:01:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:01,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900438484] [2020-09-12 00:01:01,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:01,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:01:01,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [586770811] [2020-09-12 00:01:01,159 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:01,161 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:01,163 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 17 transitions. [2020-09-12 00:01:01,163 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:01,173 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:01,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:01:01,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:01,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:01:01,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:01:01,175 INFO L87 Difference]: Start difference. First operand 394 states and 1266 transitions. Second operand 4 states. [2020-09-12 00:01:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:01,197 INFO L93 Difference]: Finished difference Result 430 states and 1332 transitions. [2020-09-12 00:01:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:01:01,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-12 00:01:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:01,201 INFO L225 Difference]: With dead ends: 430 [2020-09-12 00:01:01,201 INFO L226 Difference]: Without dead ends: 358 [2020-09-12 00:01:01,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-12 00:01:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-09-12 00:01:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-09-12 00:01:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-09-12 00:01:01,215 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-09-12 00:01:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:01,216 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-09-12 00:01:01,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:01:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-09-12 00:01:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:01:01,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:01,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:01,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:01:01,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-09-12 00:01:01,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:01,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753109185] [2020-09-12 00:01:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:01,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753109185] [2020-09-12 00:01:01,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:01,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:01:01,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [576706652] [2020-09-12 00:01:01,288 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:01,290 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:01,292 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-09-12 00:01:01,293 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:01,349 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:01,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:01:01,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:01,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:01:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:01,351 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand 5 states. [2020-09-12 00:01:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:01,406 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-09-12 00:01:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:01:01,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-12 00:01:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:01,409 INFO L225 Difference]: With dead ends: 496 [2020-09-12 00:01:01,409 INFO L226 Difference]: Without dead ends: 262 [2020-09-12 00:01:01,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:01:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-12 00:01:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-09-12 00:01:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-12 00:01:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-09-12 00:01:01,418 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-09-12 00:01:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:01,418 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-09-12 00:01:01,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:01:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-09-12 00:01:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-12 00:01:01,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:01,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:01,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:01:01,420 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-09-12 00:01:01,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:01,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340099951] [2020-09-12 00:01:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:01,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340099951] [2020-09-12 00:01:01,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:01,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:01:01,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [579698618] [2020-09-12 00:01:01,491 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:01,493 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:01,498 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-09-12 00:01:01,498 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:01,519 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,558 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,593 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,610 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,624 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,648 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,661 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,671 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,683 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,708 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,721 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,734 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,743 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,753 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,766 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:01,787 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9912#(not (= 4 ~__unbuffered_cnt~0))] [2020-09-12 00:01:01,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:01:01,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:01,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:01:01,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:01,788 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 5 states. [2020-09-12 00:01:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:01,856 INFO L93 Difference]: Finished difference Result 263 states and 689 transitions. [2020-09-12 00:01:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:01:01,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-12 00:01:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:01,858 INFO L225 Difference]: With dead ends: 263 [2020-09-12 00:01:01,858 INFO L226 Difference]: Without dead ends: 182 [2020-09-12 00:01:01,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:01:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-12 00:01:01,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-12 00:01:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-12 00:01:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-09-12 00:01:01,864 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 15 [2020-09-12 00:01:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:01,865 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-09-12 00:01:01,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:01:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-09-12 00:01:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:01:01,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:01,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:01,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:01:01,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-09-12 00:01:01,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:01,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552566549] [2020-09-12 00:01:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:01,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552566549] [2020-09-12 00:01:01,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:01,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-12 00:01:01,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [932020444] [2020-09-12 00:01:01,973 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:01,976 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:01,982 INFO L274 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-09-12 00:01:01,983 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:01,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:02,025 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:02,042 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:02,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:02,189 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10550#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:01:02,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:01:02,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:01:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:01:02,190 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 7 states. [2020-09-12 00:01:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:02,254 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-09-12 00:01:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:01:02,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-09-12 00:01:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:02,256 INFO L225 Difference]: With dead ends: 165 [2020-09-12 00:01:02,256 INFO L226 Difference]: Without dead ends: 132 [2020-09-12 00:01:02,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:01:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-12 00:01:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-12 00:01:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-12 00:01:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-09-12 00:01:02,261 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-09-12 00:01:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:02,261 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-09-12 00:01:02,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:01:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-09-12 00:01:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-12 00:01:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:02,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:02,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:01:02,263 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-09-12 00:01:02,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:02,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627272508] [2020-09-12 00:01:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:02,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627272508] [2020-09-12 00:01:02,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:02,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-12 00:01:02,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1744866213] [2020-09-12 00:01:02,354 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:02,357 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:02,364 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-09-12 00:01:02,364 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:02,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:01:02,483 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10989#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:01:02,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-12 00:01:02,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-12 00:01:02,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:01:02,485 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 8 states. [2020-09-12 00:01:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:02,559 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-09-12 00:01:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-12 00:01:02,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-09-12 00:01:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:02,561 INFO L225 Difference]: With dead ends: 121 [2020-09-12 00:01:02,561 INFO L226 Difference]: Without dead ends: 112 [2020-09-12 00:01:02,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-12 00:01:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-12 00:01:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-09-12 00:01:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-12 00:01:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-09-12 00:01:02,565 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-09-12 00:01:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:02,566 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-09-12 00:01:02,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-12 00:01:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-09-12 00:01:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-12 00:01:02,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:02,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:02,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:01:02,567 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:02,568 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-09-12 00:01:02,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:02,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391446914] [2020-09-12 00:01:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:02,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391446914] [2020-09-12 00:01:02,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:02,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:01:02,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1685290619] [2020-09-12 00:01:02,642 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:02,644 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:02,652 INFO L274 McrAutomatonBuilder]: Finished intersection with 48 states and 77 transitions. [2020-09-12 00:01:02,653 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:02,743 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:02,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:01:02,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:01:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:02,744 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 5 states. [2020-09-12 00:01:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:02,790 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2020-09-12 00:01:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:01:02,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-12 00:01:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:02,792 INFO L225 Difference]: With dead ends: 146 [2020-09-12 00:01:02,792 INFO L226 Difference]: Without dead ends: 52 [2020-09-12 00:01:02,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:01:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-12 00:01:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-12 00:01:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-12 00:01:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-09-12 00:01:02,795 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 21 [2020-09-12 00:01:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:02,796 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-09-12 00:01:02,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:01:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-09-12 00:01:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-12 00:01:02,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:01:02,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:01:02,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-12 00:01:02,797 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:01:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:01:02,798 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 2 times [2020-09-12 00:01:02,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:01:02,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260775113] [2020-09-12 00:01:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:01:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:01:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:01:02,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260775113] [2020-09-12 00:01:02,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:01:02,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:01:02,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1398999709] [2020-09-12 00:01:02,894 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:01:02,896 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:01:02,901 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-09-12 00:01:02,901 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:01:02,913 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:01:02,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:01:02,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:01:02,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:01:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:01:02,914 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 5 states. [2020-09-12 00:01:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:01:02,942 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-09-12 00:01:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:01:02,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-12 00:01:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:01:02,943 INFO L225 Difference]: With dead ends: 51 [2020-09-12 00:01:02,943 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:01:02,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:01:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:01:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:01:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:01:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:01:02,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-12 00:01:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:01:02,945 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:01:02,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:01:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:01:02,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:01:02,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-12 00:01:02,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:01:02 BasicIcfg [2020-09-12 00:01:02,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:01:02,952 INFO L168 Benchmark]: Toolchain (without parser) took 6343.75 ms. Allocated memory was 137.9 MB in the beginning and 287.3 MB in the end (delta: 149.4 MB). Free memory was 100.0 MB in the beginning and 237.8 MB in the end (delta: -137.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:01:02,953 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:01:02,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.11 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 99.3 MB in the beginning and 160.6 MB in the end (delta: -61.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:01:02,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.08 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 158.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-12 00:01:02,956 INFO L168 Benchmark]: Boogie Preprocessor took 32.53 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 157.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:01:02,956 INFO L168 Benchmark]: RCFGBuilder took 516.34 ms. Allocated memory is still 203.4 MB. Free memory was 157.1 MB in the beginning and 132.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:01:02,957 INFO L168 Benchmark]: TraceAbstraction took 4918.24 ms. Allocated memory was 203.4 MB in the beginning and 287.3 MB in the end (delta: 83.9 MB). Free memory was 132.6 MB in the beginning and 237.8 MB in the end (delta: -105.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:01:02,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.11 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 99.3 MB in the beginning and 160.6 MB in the end (delta: -61.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.08 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 158.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.53 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 157.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.34 ms. Allocated memory is still 203.4 MB. Free memory was 157.1 MB in the beginning and 132.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4918.24 ms. Allocated memory was 203.4 MB in the beginning and 287.3 MB in the end (delta: 83.9 MB). Free memory was 132.6 MB in the beginning and 237.8 MB in the end (delta: -105.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 933 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 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 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 245 SDtfs, 260 SDslu, 466 SDs, 0 SdLazy, 201 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 159 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 6535 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...