/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/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:38:53,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:38:53,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:38:53,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:38:53,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:38:53,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:38:53,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:38:53,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:38:53,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:38:53,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:38:53,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:38:53,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:38:53,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:38:53,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:38:53,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:38:53,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:38:53,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:38:53,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:38:53,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:38:53,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:38:53,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:38:53,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:38:53,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:38:53,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:38:53,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:38:53,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:38:53,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:38:53,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:38:53,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:38:53,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:38:53,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:38:53,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:38:53,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:38:53,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:38:53,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:38:53,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:38:53,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:38:53,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:38:53,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:38:53,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:38:53,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:38:53,982 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 [2020-10-16 13:38:54,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:38:54,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:38:54,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:38:54,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:38:54,007 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:38:54,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:38:54,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:38:54,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:38:54,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:38:54,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:38:54,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:38:54,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:38:54,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:38:54,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:38:54,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:38:54,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:38:54,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:38:54,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:38:54,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:38:54,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:38:54,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:38:54,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:38:54,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:38:54,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:38:54,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:38:54,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:38:54,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:38:54,014 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:38:54,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:38:54,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:38:54,015 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:38:54,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:38:54,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:38:54,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:38:54,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:38:54,316 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:38:54,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-16 13:38:54,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f36f5cd5d/055269c671684339bfe37f25bddae245/FLAG2a6ec69ec [2020-10-16 13:38:54,911 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:38:54,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-16 13:38:54,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f36f5cd5d/055269c671684339bfe37f25bddae245/FLAG2a6ec69ec [2020-10-16 13:38:55,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f36f5cd5d/055269c671684339bfe37f25bddae245 [2020-10-16 13:38:55,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:38:55,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:38:55,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:38:55,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:38:55,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:38:55,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:55,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c33e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55, skipping insertion in model container [2020-10-16 13:38:55,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:55,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:38:55,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:38:55,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:38:55,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:38:55,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:38:55,977 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:38:55,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55 WrapperNode [2020-10-16 13:38:55,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:38:55,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:38:55,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:38:55,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:38:55,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:38:56,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:38:56,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:38:56,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:38:56,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (1/1) ... [2020-10-16 13:38:56,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:38:56,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:38:56,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:38:56,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:38:56,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (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 [2020-10-16 13:38:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:38:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:38:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:38:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:38:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:38:56,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:38:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:38:56,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:38:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:38:56,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:38:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:38:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:38:56,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:38:56,195 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:38:56,597 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:38:56,597 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:38:56,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:38:56 BoogieIcfgContainer [2020-10-16 13:38:56,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:38:56,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:38:56,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:38:56,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:38:56,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:38:55" (1/3) ... [2020-10-16 13:38:56,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8aeafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:38:56, skipping insertion in model container [2020-10-16 13:38:56,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:55" (2/3) ... [2020-10-16 13:38:56,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8aeafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:38:56, skipping insertion in model container [2020-10-16 13:38:56,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:38:56" (3/3) ... [2020-10-16 13:38:56,609 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-10-16 13:38:56,621 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:38:56,621 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:38:56,628 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:38:56,629 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:38:56,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,661 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,663 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,663 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,667 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,667 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:38:56,697 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:38:56,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:38:56,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:38:56,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:38:56,731 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:38:56,731 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:38:56,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:38:56,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:38:56,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:38:56,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:38:56,743 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:38:56,743 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:38:56,745 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:38:56,747 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:38:56,786 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:38:56,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:38:56,791 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:38:56,794 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:38:58,184 INFO L132 LiptonReduction]: Checked pairs total: 2298 [2020-10-16 13:38:58,185 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 13:38:58,191 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 13:38:58,217 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:38:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:38:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:38:58,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:58,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:58,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:58,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-10-16 13:38:58,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:58,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890020646] [2020-10-16 13:38:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890020646] [2020-10-16 13:38:58,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:58,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:38:58,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1039877398] [2020-10-16 13:38:58,470 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:58,472 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:58,486 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:38:58,487 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:58,491 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:58,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:38:58,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:58,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:38:58,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:38:58,508 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:38:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:58,542 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 13:38:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:38:58,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:38:58,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:58,559 INFO L225 Difference]: With dead ends: 290 [2020-10-16 13:38:58,559 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 13:38:58,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:38:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 13:38:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 13:38:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 13:38:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 13:38:58,632 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 13:38:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:58,640 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 13:38:58,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:38:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 13:38:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:38:58,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:58,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:58,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:38:58,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:58,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1042338189, now seen corresponding path program 1 times [2020-10-16 13:38:58,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:58,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956130770] [2020-10-16 13:38:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:58,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956130770] [2020-10-16 13:38:58,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:58,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:38:58,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [163299621] [2020-10-16 13:38:58,750 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:58,751 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:58,754 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-16 13:38:58,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:58,800 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:58,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:38:58,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:58,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:38:58,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:38:58,802 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-16 13:38:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:58,810 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-10-16 13:38:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:38:58,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:38:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:58,814 INFO L225 Difference]: With dead ends: 214 [2020-10-16 13:38:58,814 INFO L226 Difference]: Without dead ends: 214 [2020-10-16 13:38:58,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:38:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-16 13:38:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-16 13:38:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 13:38:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-10-16 13:38:58,835 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-10-16 13:38:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:58,836 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-10-16 13:38:58,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:38:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-10-16 13:38:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:38:58,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:58,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:58,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:38:58,838 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:58,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:58,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-10-16 13:38:58,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:58,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564114663] [2020-10-16 13:38:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:58,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564114663] [2020-10-16 13:38:58,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:58,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:38:58,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646450242] [2020-10-16 13:38:58,891 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:58,892 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:58,895 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-16 13:38:58,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:58,944 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:58,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:38:58,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:58,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:38:58,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:38:58,945 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-10-16 13:38:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:58,968 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-10-16 13:38:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:38:58,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:38:58,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:58,970 INFO L225 Difference]: With dead ends: 240 [2020-10-16 13:38:58,970 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 13:38:58,970 INFO L677 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 [2020-10-16 13:38:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 13:38:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-16 13:38:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 13:38:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-16 13:38:58,983 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-10-16 13:38:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:58,983 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-16 13:38:58,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:38:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-16 13:38:58,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:38:58,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:58,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:58,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:38:58,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:58,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:58,986 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-10-16 13:38:58,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:58,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572002824] [2020-10-16 13:38:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:59,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572002824] [2020-10-16 13:38:59,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:59,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:38:59,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1465578164] [2020-10-16 13:38:59,053 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:59,054 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:59,058 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-16 13:38:59,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:59,111 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,136 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,149 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,166 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,218 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,297 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2605#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:38:59,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:38:59,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:38:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:38:59,299 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-10-16 13:38:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:59,366 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-10-16 13:38:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:38:59,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 13:38:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:59,367 INFO L225 Difference]: With dead ends: 137 [2020-10-16 13:38:59,367 INFO L226 Difference]: Without dead ends: 97 [2020-10-16 13:38:59,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:38:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-16 13:38:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-16 13:38:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 13:38:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-16 13:38:59,375 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-16 13:38:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:59,375 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-16 13:38:59,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:38:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-16 13:38:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:38:59,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:59,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:59,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:38:59,377 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:59,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-10-16 13:38:59,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:59,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931034766] [2020-10-16 13:38:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:59,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931034766] [2020-10-16 13:38:59,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:59,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:38:59,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1793632979] [2020-10-16 13:38:59,413 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:59,414 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:59,417 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 13:38:59,417 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:59,421 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:59,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:38:59,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:59,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:38:59,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:38:59,422 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-16 13:38:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:59,430 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-16 13:38:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:38:59,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 13:38:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:59,431 INFO L225 Difference]: With dead ends: 115 [2020-10-16 13:38:59,431 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 13:38:59,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:38:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 13:38:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-16 13:38:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 13:38:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-16 13:38:59,438 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-16 13:38:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:59,438 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-16 13:38:59,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:38:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-16 13:38:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:38:59,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:59,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:59,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:38:59,440 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:59,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-10-16 13:38:59,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:59,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707583666] [2020-10-16 13:38:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:59,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707583666] [2020-10-16 13:38:59,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:59,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:38:59,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [475725108] [2020-10-16 13:38:59,546 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:59,548 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:59,553 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-10-16 13:38:59,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:59,570 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:38:59,745 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3257#(not (= 3 ~__unbuffered_cnt~0)), 3258#(not (= ~__unbuffered_cnt~0 2)), 3259#(not (= ~__unbuffered_cnt~0 1)), 3260#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:38:59,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 13:38:59,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:59,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 13:38:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-16 13:38:59,747 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-10-16 13:38:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:59,820 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-16 13:38:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:38:59,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-16 13:38:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:59,821 INFO L225 Difference]: With dead ends: 92 [2020-10-16 13:38:59,821 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 13:38:59,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-16 13:38:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 13:38:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 13:38:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 13:38:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 13:38:59,824 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 13:38:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:59,825 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 13:38:59,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 13:38:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 13:38:59,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:38:59,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:38:59,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:38:59,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:38:59,826 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:38:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:38:59,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-10-16 13:38:59,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:38:59,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117741015] [2020-10-16 13:38:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:38:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:38:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:38:59,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117741015] [2020-10-16 13:38:59,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:38:59,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:38:59,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2117600475] [2020-10-16 13:38:59,863 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:38:59,865 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:38:59,871 INFO L258 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-10-16 13:38:59,872 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:38:59,897 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:38:59,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:38:59,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:38:59,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:38:59,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:38:59,898 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 13:38:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:38:59,910 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 13:38:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:38:59,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:38:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:38:59,911 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:38:59,911 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:38:59,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:38:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:38:59,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:38:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:38:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:38:59,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:38:59,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:38:59,912 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:38:59,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:38:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:38:59,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:38:59,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:38:59,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:38:59 BasicIcfg [2020-10-16 13:38:59,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:38:59,920 INFO L168 Benchmark]: Toolchain (without parser) took 4748.55 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 101.3 MB in the beginning and 114.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 94.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,921 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.39 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 158.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.40 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,923 INFO L168 Benchmark]: Boogie Preprocessor took 58.99 ms. Allocated memory is still 202.4 MB. Free memory was 156.0 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,924 INFO L168 Benchmark]: RCFGBuilder took 486.42 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 132.1 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,925 INFO L168 Benchmark]: TraceAbstraction took 3315.43 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 131.5 MB in the beginning and 114.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:38:59,929 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 806.39 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 158.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.40 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.99 ms. Allocated memory is still 202.4 MB. Free memory was 156.0 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.42 ms. Allocated memory is still 202.4 MB. Free memory was 154.7 MB in the beginning and 132.1 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3315.43 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 131.5 MB in the beginning and 114.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 659 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 2298 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 126 SDtfs, 105 SDslu, 172 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...